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CP2108-B02-GMR USB 2.0 to Quad-UART 64-QFN
CP2108-B02-GMR

CP2108-B02-GMR USB 2.0 to Quad-UART 64-QFN

The Silicon Labs CP2108-B02-GMR is a single-chip USB 2.0 to quad-UART bridge controller with four UART channels, a 3.3 V supply, and a 64-pin QFN exposed-pad package measuring 9 mm by 9 mm. It is designed to replace legacy RS-232 and RS-485 interface connections with USB while minimizing external components and PCB space. The integrated bridge handles USB-to-serial protocol conversion, UART signal interfacing, and enumeration-related device communication through its USB interface. A USB-to-UART bridge is an interface controller that connects a USB host to one or more asynchronous serial ports. In the broader electronics hierarchy, it belongs to interface ICs and USB interface controllers rather than a general-purpose microcontroller. The CP2108 family is particularly useful when a product needs multiple COM ports, legacy serial peripherals, service interfaces, or industrial equipment connectivity without allocating separate USB-to-serial adapters. Verified distributor and manufacturer information identifies the device as supporting USB 2.0, low-speed or full-speed operation, four UART channels, and a 3.3 V operating supply. Its 64-QFN exposed-pad construction supports compact surface-mount layouts while providing a defined thermal and ground connection through the exposed pad. Tape-and-reel ordering is represented by the GMR suffix, and the supplied distributor listings identify the component as a 64-QFN USB bridge. The CP2108 is appropriate for industrial control adapters, test equipment, multiport serial hubs, embedded systems, and legacy peripheral upgrades. Its quad-UART architecture can reduce the number of discrete interface components needed when several serial channels share one USB connection. Firmware and host-driver deployment should be checked against the manufacturer’s current software support before production release, especially where an existing product has an established USB device identity. A key design consideration is that USB-to-UART conversion does not automatically make an RS-232 or RS-485 physical layer. The external transceiver, connector, protection network, and cable requirements remain application-specific. Layout should preserve short USB differential routing, provide the required supply and ground-plane integrity, and use the exposed-pad land pattern specified by the manufacturer. This page consolidates verified manufacturer and distributor information, a cautious replacement assessment, and practical interface considerations that are not available from a raw distributor listing. Exact pin-level details, electrical limits, lifecycle status, and pricing beyond the supplied listing should be confirmed against the current CP2108 datasheet and distributor records.

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CP2108-B03-GM - USB 2.0 to Quad-UART Bridge | Silicon Labs
CP2108-B03-GM

CP2108-B03-GM - USB 2.0 to Quad-UART Bridge | Silicon Labs

Silicon Labs CP2108-B03-GM is a USB 2.0 full-speed interface bridge with four asynchronous UART channels, 16 digital I/O pins, and customizable on-chip EEPROM, housed in a 64-QFN package measuring 9 mm by 9 mm. It operates from a 3 V to 3.6 V supply and integrates a USB function controller, USB transceiver, oscillator, EEPROM, and four UART interfaces with full modem-control signals. A USB-to-UART bridge is an interface IC that connects a USB host to one or more legacy serial ports. Within the product hierarchy, the CP2108 belongs to interface bridges, then USB interface controllers, interface ICs, and integrated circuits. This integration lets equipment designers add four serial channels without implementing separate USB controllers, transceivers, oscillators, and discrete serial-interface circuitry on the printed circuit board. The verified feature set includes USB 2.0 operation, four UART data buses, full modem-control signals, 16 digital I/O pins, and EEPROM fields for custom USB identifiers and descriptors. The EEPROM can store USB Vendor ID, Product ID, product description, power descriptor, release number, and interface strings. This configurability supports product differentiation while retaining a common USB-to-serial controller design. Silicon Labs positions the CP2108 as a plug-and-play bridge with royalty-free drivers. The four UART channels provide independent asynchronous serial connections for control, data, instrumentation, or service functions, while the digital I/O pins add discrete digital signaling. Exact UART baud-rate limits, current consumption, operating-temperature limits, pin names, and electrical timing values were not included in the supplied verified data and therefore require confirmation from the manufacturer datasheet. Typical applications include industrial test equipment, multiport serial adapters, instrumentation, POS terminals, embedded systems, and legacy RS-232 or RS-485 equipment being modernized through USB. In each design, the host driver enumerates the bridge and exposes its four UART interfaces while the on-board controller manages the USB transaction scheduling and asynchronous byte transfer. The main PCB consideration is that a 64-QFN footprint requires a land pattern capable of routing USB, ground, UART, modem-control, and digital-I/O signals. Place the device near the USB connector, keep high-speed USB traces short and impedance-controlled, connect decoupling close to the supply pins, and maintain the datasheet-specified ground and exposed-pad connections. This page combines verified manufacturer and distributor data, strict package-aware substitution screening, application guidance, and practical integration notes. The alternatives list intentionally excludes single-port bridges and devices with different packages because they are not verified pin-to-pin drop-in replacements.

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CP2108-B03-GMR - USB to Quad UART Bridge, QFN-64 | Silicon Labs
CP2108-B03-GMR

CP2108-B03-GMR - USB to Quad UART Bridge, QFN-64 | Silicon Labs

The Silicon Labs CP2108-B03-GMR is a highly integrated single-chip USB-to-Quad-UART bridge controller providing four asynchronous serial data buses with full modem control signals through a USB 2.0 full-speed interface, housed in a compact 9 mm x 9 mm 64-pin QFN package. It integrates a USB 2.0 full-speed function controller, USB transceiver, internal oscillator, EEPROM, and four UART engines in a single die, operating from a single 3.0 V to 3.6 V supply. The revision B03 variant adds multi-IO configuration support and GPIOs that map directly to application-specific handshake and status lines. A USB-to-UART bridge is a device-class converter that translates USB packets into asynchronous serial frames, enabling legacy RS-232/RS-485 peripherals, sensors, and microcontrollers to communicate with a modern host that has dropped legacy COM ports. Within the broader interface IC taxonomy, the CP2108 sits in the bus bridge sub-category (USB bridge -> bridge IC -> interface IC -> integrated circuit), using the USB Communications Device Class (CDC) on the host side and a transparent UART on the device side to eliminate firmware-side protocol stacks. Key features include four independent UART channels each supporting hardware flow control (RTS/CTS), programmable baud rates from 300 bps to 921.6 kbps, on-chip EEPROM for custom VID/PID and product-string storage, and a built-in 3.3 V LDO that can supply external logic up to 100 mA. The internal clock generator removes the need for an external crystal, and an integrated power-on reset circuit ensures clean enumeration even on noisy USB VBUS rails. Typical applications cover industrial multi-port serial hubs, point-of-sale terminals with cash drawer / scanner / barcode-reader / printer ports, RS-232/RS-485 field-service dongles, multi-drop Modbus gateways, and test-and-measurement fixtures that aggregate several UART instruments onto one USB port. The combination of four independent UARTs, a CDC driver stack provided by Silicon Labs, and BOM-saving integration reduces PCB area and BOM cost versus building four CP2102 bridges. Designers should pay attention to USB 2.0 signal-integrity on the upstream port - keep the D+/D- traces 90 ohm differential, length-matched, and routed over a continuous reference plane. The internal 3.3 V LDO is intended for light logic-rail loads; do not power RF stages from REG3V3. Suspend current is well below the USB 2.0 specification, so bus-powered designs typically pass gold-tree compliance without extra load switches.

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CP2109-A01-GM - USB 2.0 to UART Bridge | Silicon Labs
CP2109-A01-GM

CP2109-A01-GM - USB 2.0 to UART Bridge | Silicon Labs

The Silicon Labs CP2109-A01-GM is a single-chip USB-to-UART interface bridge with USB 2.0 connectivity, a 3.3 V to 3.6 V supply range, and a 28-QFN package measuring 5 mm by 5 mm. It adds one USB-to-serial interface without requiring an external USB transceiver, crystal, or resistor network. According to the verified distributor and manufacturer-material summaries, the device is intended for embedded data acquisition, programming, control, and industrial communication systems. A USB-to-UART bridge is an interface controller that translates between a host computer's USB transaction protocol and a UART data stream using differential signaling on one side and logic-level serial signaling on the other. It belongs to the interface-controller and data-conversion hierarchy: USB bridge → UART interface controller → serial interface IC → semiconductor. Its primary engineering value is reducing firmware and hardware complexity while providing a standard serial connection for embedded products. The CP2109 family integrates an internal USB transceiver, an integrated clock, and an on-chip power-on reset circuit. The verified CP2102/CP2109 datasheet summary also describes programmable on-chip memory for USB descriptors and device identification data. For CP2109, the one-time-programmable memory provides customized product information, while vendor configuration requirements and programming implications must be reviewed before production use. The interface supports low-speed and full-speed USB operation according to the verified component summaries. USB 2.0 identifies the peripheral-side interface standard, while UART data is exposed through the device's serial pins. Designers should use the manufacturer's pinout, reference circuit, and interface guidelines because signal routing, grounding, exposed-pad connection, supply filtering, and host-driver behavior are essential to reliable operation. Typical uses include industrial instrument service ports, machine controllers, test equipment, USB-to-serial adapters, embedded development boards, and field-upgrade interfaces. The 5 mm by 5 mm QFN package supports compact designs, but its exposed thermal pad requires careful PCB layout and an adequate ground or thermal plane. Unlike a large legacy serial connector implementation, the bridge can add USB connectivity while preserving the firmware-facing UART model. For each new design, confirm the exact USB speed, UART baud-rate and electrical limits, supply sequencing, crystal-free clocking conditions, descriptor programming method, and exposed-pad layout against the current manufacturer datasheet. Do not infer those missing values from distributor category labels alone. This page consolidates verified sourcing information, procurement context, technical gaps, and design cautions around the CP2109-A01-GM, helping engineers separate confirmed facts from parameters that still require manufacturer-documentation confirmation.

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CP2109-A01-GMR - USB to UART Bridge, 28-QFN | Silicon Labs
CP2109-A01-GMR

CP2109-A01-GMR - USB to UART Bridge, 28-QFN | Silicon Labs

The Silicon Labs CP2109-A01-GMR is a USB 2.0 to UART bridge controller housed in a 28-pin QFN (5x5 mm) package with exposed pad, designed to add USB connectivity to embedded designs without requiring external firmware development. According to verified distributor data, it operates from a 3.0 V to 3.6 V supply, supports USB 2.0 full-speed (12 Mbps), and integrates an internal oscillator plus 640-byte FIFO buffer for high-throughput UART bridging across baud rates from 300 bps to 1 Mbaud. The -GMR suffix indicates a tape-and-reel packaging variant of the CP2109-A01 family. A USB to UART bridge is a class of interface controller IC that translates USB signaling from a host computer into asynchronous serial (UART) data consumable by microcontrollers, FPGAs, or other digital devices that lack native USB ports. In the broader component taxonomy, it sits under USB Bridge Controllers -> Interface ICs -> Integrated Circuits, providing a 'drop-in cable replacement' path for legacy RS-232 designs transitioning to USB connectivity. The CP2109 family is part of Silicon Labs' CP210x USBXpress lineage, which includes the CP2102N, CP2104, CP2105, and CP2108 bridges. Key features confirmed across distributor listings include a built-in USB 2.0 full-speed transceiver (12 Mbps), integrated voltage regulator requiring minimal external components, hardware XON/XOFF flow control, support for 5/6/7/8 data bits, and royalty-free Virtual COM Port (VCP) drivers for Windows, macOS, and Linux. The internal 640-byte receive and transmit FIFO enables efficient burst transfers without host-side throttling, and the device supports bus-powered and self-powered USB topologies. Architecturally, the CP2109-A01-GMR combines a USB PHY, a 48 MHz internal oscillator, an 8051-compatible controller core running Silicon Labs' USBXpress firmware, and a UART engine. The device uses a serial debug interface (SDI) or USB for firmware updates and configuration, with the standard CP2109 variant shipping as a turnkey VCP bridge that requires no user firmware. The exposed pad on the QFN-28 package must be soldered to the ground plane for thermal dissipation and signal integrity. Typical applications include industrial USB-to-RS232 adapters, point-of-sale (POS) terminals, USB dongles for firmware programming, barcode scanner interfaces, GPS module USB bridges, and embedded debug consoles. Per Mouser's category assignment, the CP2109-A01-GMR is classified as an I/O Controller Interface IC, confirming its bridge role. When designing with this part, note that the maximum supply voltage is 3.6 V; operating at 5 V systems requires an external LDO. Decoupling the VBUS and VDD pins with 4.7 uF and 0.1 uF ceramic capacitors close to the IC is recommended, and the exposed pad must be soldered to a ground pour for stable USB signaling. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone CP2109 datasheet PDF.

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CP80C88-2Z - 80C88 8MHz CMOS CPU 40-PDIP | Renesas/Intersil
CP80C88-2Z

CP80C88-2Z - 80C88 8MHz CMOS CPU 40-PDIP | Renesas/Intersil

The Renesas/Intersil CP80C88-2Z is an 8/16-bit CMOS microprocessor (CPU) from the 80C88 family operating at 8 MHz from a single 5 V supply, housed in a 40-pin PDIP (0.600 in / 15.24 mm) through-hole package. It is a drop-in CMOS successor to the NMOS 8088, executing the same x86 real-mode instruction set while dramatically reducing power consumption. A microprocessor (MPU) is the central processing unit of a computer system: it fetches instructions from memory, decodes them, and executes arithmetic, logic, and I/O operations. The 80C88 sits within the x86 processor hierarchy (8086 -> 8088 -> 80C88 -> 80186/80286), making it software-compatible with the vast ecosystem of 8086/8088 code, BIOS implementations, and peripherals such as the 8284 clock generator and 8288 bus controller. Key features of the CP80C88-2Z include an 8 MHz maximum clock frequency, a multiplexed 8-bit external data bus with a 16-bit internal architecture, a 20-bit address bus addressing up to 1 MB of memory, and two operating modes: MINimum mode for small single-processor systems and MAXimum mode for larger multiprocessor applications. CMOS fabrication (self-aligned silicon gate, scaled SAJI IV process) gives it far lower static and dynamic power draw than the original NMOS 8088. Technically, the device uses a prefetch queue and bus interface unit separated from the execution unit, allowing instruction fetch and execution to overlap. The 2 suffix denotes the 8 MHz speed grade, and the Z suffix denotes lead-free, RoHS-compliant construction. Compatible support chips (8284A, 8288, 8259A, 8237A) allow a full board-level system design. Typical applications include legacy industrial control systems, embedded x86 single-board computers, avionics and test-equipment maintenance, and educational/retro-computing platforms that require authentic 8088 bus timing. Design consideration: use the 8284A clock generator for a properly phased CLK signal, and ensure READY-based wait states for slow EPROM/EEPROM memories; do not exceed the 5 V +/-10% supply range. This page synthesizes distributor pricing, drop-in alternatives, pinout data, and practical design notes not consolidated in the manufacturer datasheet.

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CS3308-CQZR - 8-Ch Analog Volume Control, 48-LQFP | Cirrus Logic
CS3308-CQZR

CS3308-CQZR - 8-Ch Analog Volume Control, 48-LQFP | Cirrus Logic

The Cirrus Logic CS3308-CQZR is a high-performance, low-power, 8-channel digitally controlled analog volume control IC designed for high-end audio systems, housed in a 48-pin LQFP (7x7 mm) package with surface-mount mounting. Key specifications include 8 independent volume channels, configurable zero-crossing detection for glitch-free level changes, a serial control interface compatible with I2C and SPI, a supply voltage range of 3.1 V to 5.25 V, and the ability to address up to 128 CS3308 devices on a single 2-wire I2C or 3-wire SPI bus for high-channel-count systems. The device targets professional audio equipment and consumer electronics that demand clean, click-free volume transitions. A digital volume control IC is an integrated circuit that performs attenuation or amplification of analog audio signals under the command of a microcontroller or DSP, replacing mechanical potentiometers in modern equipment. Within the audio signal chain, it sits between the source selector or DAC output and the power amplifier, and it belongs to the broader family of audio special-purpose ICs alongside DACs, ADCs, and audio amplifiers. Compared with mechanical potentiometers, a digitally controlled attenuator offers precise repeatability, remote control, memory recall, and absence of mechanical wear. Key features of the CS3308-CQZR include 8 independent channels with 0.5 dB step resolution, configurable zero-crossing detection to eliminate zipper noise during volume changes, a wide supply range of 3.1 V to 5.25 V suitable for 3.3 V and 5 V system rails, selectable I2C or SPI serial control interface, and hardware-addressable device IDs that allow up to 128 cascaded devices on a single bus. The combination of fine resolution and zero-crossing logic preserves audio signal integrity during level transitions. Technically, the CS3308 uses a resistive ladder network with CMOS switches and an internal zero-crossing detector that holds the wiper position until the audio waveform crosses zero, suppressing audible artifacts. The architecture provides very low total harmonic distortion plus noise (THD+N) and high channel-to-channel matching, which are essential parameters for multi-channel professional audio gear. Programmable address pins enable bus expansion without adding microcontroller I/O. Typical applications include professional audio mixing consoles, multichannel AV receivers and amplifiers, broadcast studio equipment, automotive head units and infotainment amplifiers, and home theater preamplifiers. In each case the CS3308 replaces mechanical or electromechanical volume controls with a precise, software-driven solution that supports remote control and preset recall. When designing with the CS3308-CQZR, ensure that analog input signals remain within the recommended common-mode and clip range, place bypass capacitors close to the supply pins, and verify I2C/SPI address selection when stacking multiple devices on the same bus. The LQFP-48 footprint gives good thermal performance for continuous signal-path operation. This page synthesizes current distributor pricing and stock, drop-in alternatives with the same 48-LQFP footprint, and practical design notes not consolidated in the manufacturer datasheet, delivering actionable information for both new designs and legacy audio system refreshes.

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CS4205-KQ - AC'97 Stereo Audio Codec | Cirrus Logic
CS4205-KQ

CS4205-KQ - AC'97 Stereo Audio Codec | Cirrus Logic

The Cirrus Logic CS4205-KQ is an AC'97 2.1-compliant stereo audio codec designed for PC multimedia systems, portable computing, and docking-station equipment. It uses CrystalClear delta-sigma and mixed-signal technology and is offered in a 48-pin LQFP package measuring 7 mm by 7 mm. Distributor records identify the interface as a 20-bit serial audio codec with 18-bit resolution on one associated serial interface. An audio codec is an interface IC that converts digital audio data into analog signals and analog audio inputs into digital data. In the signal chain, it sits between a host audio controller and external microphones, speakers, line inputs, or line outputs. AC'97 is a legacy Intel-defined audio interface that combines serialized digital audio with control, status, and general-purpose digital signals. The CS4205 therefore belongs to the broader audio codec, multimedia interface, and signal-conversion IC categories. The manufacturer datasheet identifies the CS4205 as a stereo co-dec for portable-computing systems. Its AC'97 2.1 compliance supports host-controlled multimedia operation, while CrystalClear delta-sigma and mixed-signal circuitry provides the analog-to-digital and digital-to-analog conversion functions. The 48-LQFP package exposes the complete AC'97 interface and associated analog and power connections on a compact surface-mount footprint. Technical implementation requires care because an audio codec combines sensitive analog inputs with a high-speed digital bus. The codec must be connected to a compatible AC'97 controller, supported audio drivers, analog input and output circuitry, and correctly decoupled supply rails. Clocking, digital signal integrity, analog grounding, output loading, and the relationship between the codec's sample rate and system timing must all be evaluated against the manufacturer datasheet. Typical uses include notebook-computer multimedia subsystems, docking stations, portable audio hardware, and legacy PC docking solutions. The Cirrus Logic CS4205 is particularly relevant when maintaining or repairing an existing AC'97 platform rather than designing a new system around a modern USB or I2S audio interface. Its stereo codec function supports the familiar PC multimedia architecture but requires legacy host, driver, and connector support. Designers should preserve the manufacturer's recommended decoupling and analog-layout practices and verify the exact pin assignments and signal names against the device documentation. AC'97 implementations can be sensitive to trace impedance, grounding, clock jitter, and power-supply noise. Because the CS4205-KQ is a legacy peripheral-oriented codec, software-driver availability and the continued support of the surrounding platform are as important as electrical compatibility. This page consolidates verified distributor availability, pricing, interface details, package information, and application context. It also distinguishes documented drop-in alternatives from related legacy codecs, helping engineers avoid treating a merely similar audio codec as a guaranteed pin-to-pin replacement.

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CS4207-CNZR - 4-In/6-Out HD Audio Codec w/ HP Amp | Cirrus Logic
CS4207-CNZR

CS4207-CNZR - 4-In/6-Out HD Audio Codec w/ HP Amp | Cirrus Logic

The Cirrus Logic CS4207-CNZR is a highly integrated, multi-channel, low-power HD Audio Codec combining 192 kHz DACs, 96 kHz ADCs, 192 kHz S/PDIF transmitter and receiver, microphone preamp with bias voltage, and a ground-centered headphone driver, all in a 48-pin QFN (6x6 mm) package. The device operates from a single 3.3 V digital supply and a 5 V analog supply, delivers 24-bit serial audio data, and supports both HDA (HD Audio) and I2S serial interfaces to host controllers. An HD Audio Codec (High Definition Audio Codec) is a mixed-signal IC that converts digital audio streams from a PC/system chipset into line out the headphone, line stage, and microphone signals using internal DACs, ADCs, and headphone amplifiers. The codec sits in the audio signal chain between the host controller (e.g., Intel HDA-compliant chipset) and the analog transducers, and the term "HD Audio" denotes compliance with the Intel HDA Link specification rather than a frequency or bit-rate definition. CS4207-CNZR occupies the power-management IC and interface-IC tier of the audio subsystem, replacing multiple discrete ADCs, DACs, S/PDIF transceivers, and headphone amps with one package. The codec is the culmination of the signal chain (digital I/O -> mixed-signal codec -> analog out). Key features of the CS4207-CNZR include a multibit Delta-Sigma modulator architecture that enables infinite sample-rate adjustment from 32 kHz to 192 kHz, integrated ground-centered headphone driver (no DC blocking capacitors required at the output), microphone preamp with bias voltage source, and digital microphone interface support. The device supports 4 analog line/microphone inputs and 6 analog outputs, providing flexible routing for desktop, notebook, and embedded audio platforms. S/PDIF transmitter and receiver operate up to 192 kHz, allowing simultaneous digital audio transmission and reception. Technical depth: the Delta-Sigma modulator multibit topology achieves higher dynamic range and linearity than single-bit designs, while the ground-centered headphone architecture eliminates large output coupling capacitors, reducing BOM cost and improving low-frequency bass response. The codec integrates digital mixing, gain control, and jack-presence detection through the HDA link, simplifying host-driver interaction. Typical applications include desktop and notebook PC audio subsystems, all-in-one motherboards, embedded media players, and HD Audio-compatible docking stations. The wide format compatibility (HDA + I2S) and integrated HP amp make CS4207 well-suited for ultra-thin notebooks and small-form-factor designs where PCB area is constrained. When designing with this device, place the analog supply decoupling capacitors as close to the AVDD pins as possible to minimize analog-domain interference, and follow Cirrus Logic reference layout for the headphone output return paths to maintain low THD+N. The integrated HP amp eliminates external coupling capacitors but requires careful ground-centered routing to preserve low noise. This page synthesizes distributor pricing, parametric drop-in alternatives, and practical design notes that go beyond the manufacturer datasheet. Engineers comparing HD Audio codec options for desktop/notebook designs will find the application notes, thermal considerations, and HDA source documents consolidated in this page.

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CS4216-KL - 16-Bit Stereo Audio Codec | Cirrus Logic
CS4216-KL

CS4216-KL - 16-Bit Stereo Audio Codec | Cirrus Logic

Cirrus Logic CS4216-KL is a monolithic CMOS 16-bit stereo audio codec with integrated analog-to-digital and digital-to-analog conversion, filtering, and level setting. The device provides four audio inputs and two audio outputs for computer multimedia systems, supports word rates up to 50 kHz, and multiplexes left- and right-channel digital audio onto one serial data bus. It is supplied in a 44-pin PLCC package measuring 16.59 mm by 16.59 mm. An audio codec is a mixed-signal interface IC that converts audio between analog and digital domains. Its hierarchy is audio codec, multimedia codec, analog-to-digital and digital-to-analog converter, interface IC, and semiconductor. The CS4216 combines those functions so a digital computer system can accept analog audio sources, process samples digitally, and reproduce them through analog outputs without separate converter packages. Key capabilities include 16-bit stereo conversion, four analog inputs, two analog outputs, integrated interpolation and filtering functions, and a shared serial data interface. The CS4216 family targets computer multimedia, automotive, and portable audio equipment. Its integrated filtering and level-setting functions simplify board partitioning, while its multiplexed digital bus reduces the number of interconnects required between the codec and host or digital-audio controller. Technically, the monolithic CMOS implementation combines two conversion channels with shared digital serialization. Interpolation filters suppress unwanted high-frequency content and reduce aliasing in the reconstruction path, while the digital interface carries both stereo channels using word rates up to 50 kHz. The 44-pin PLCC offers a surface-mount package with J-lead termination and a body size of 16.59 mm by 16.59 mm. Typical uses include desktop and notebook multimedia audio, portable-audio equipment, automotive audio systems, and embedded systems requiring simultaneous analog capture and playback. In these applications, the four inputs can serve microphones, line-level sources, or other analog audio points, while the two outputs feed downstream amplifiers or audio routing stages. Host connectivity still requires correct timing, format, and signal-level design. The main design consideration is package and signal planning. Because the converter is a 44-pin PLCC rather than a modern leadless package, its footprint has limited long-term layout flexibility. Board layout should preserve analog and digital return paths, provide suitable bypassing, and follow the manufacturer's pin and reference-circuit guidance rather than assuming a generic codec footprint. This page consolidates the verified CS4216-KL identity, package, converter topology, application fit, and verified drop-in alternatives. It also distinguishes documented capabilities from parameters that still require confirmation from the manufacturer datasheet or a live distributor quotation.

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CS4221-KS - 24-Bit Stereo Audio Codec | Cirrus Logic
CS4221-KS

CS4221-KS - 24-Bit Stereo Audio Codec | Cirrus Logic

Cirrus Logic CS4221-KS is a 24-bit stereo audio codec with a 3 V interface, integrating stereo analog-to-digital and stereo digital-to-analog converters in a 28-pin SSOP package. The device supports audio sampling up to 50 kHz according to distributor product data and uses delta-sigma conversion techniques for both converter directions. Its serial interface and mixed-signal codec architecture are intended to reduce the component count in digital audio equipment. An audio codec is an interface IC that converts analog audio signals into digital data and digital audio data back into analog signals. Within the broader semiconductor hierarchy, a codec belongs to the audio interface and signal-conversion class of integrated circuits. The CS4221-KS therefore serves as the bridge between an external digital audio processor or controller and external analog input and output circuitry, rather than functioning as a complete audio playback system by itself. The principal verified features include 24-bit resolution, simultaneous stereo ADC and DAC functionality, a 3 V interface, serial digital connectivity, and a maximum stated sampling frequency of 50 kHz. These attributes suit equipment requiring compact digital-audio conversion at a conventional CD-oriented sample rate. The integrated stereo topology also helps minimize the number of external converter channels required in a stereo design, although the application still needs suitable input and output analog circuitry. The CS4220 and CS4221 family uses delta-sigma conversion, according to the manufacturer datasheet summary reproduced by the verified search results. Delta-sigma conversion shapes quantization noise into a digitally filtered form, supporting the device's stated 24-bit resolution. The available verified snippets do not expose the internal architecture, clock requirements, analog performance metrics, or digital interface mode in sufficient detail to characterize the converter further without unsupported assumptions. Typical uses include professional and consumer stereo audio equipment, digital mixing equipment, sound-card circuitry, multimedia appliances, and embedded audio systems that require both record and playback channels. The same 50 kHz limitation that makes the codec suitable for conventional stereo audio applications also makes it less appropriate for designs needing higher-rate professional audio, unless the complete system requirements are limited to 50 kHz. When laying out a CS4221-KS design, analog signal routing should be kept separate from digital clock and serial-data paths, and the power, ground, and bypass connections must follow the manufacturer's recommended application circuit. Because the supplied verified data does not include a complete pin table or decoupling values, engineers should verify pin assignments and recommended passive values against the official Cirrus Logic datasheet before release to production. This page consolidates the verified distributor specifications, package information, lifecycle observations, source links, selection guidance, and engineering considerations for CS4221-KS. It also distinguishes confirmed characteristics from parameters that require direct confirmation from the manufacturer datasheet, helping procurement and design teams avoid treating incomplete distributor metadata as a complete electrical specification.

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CS4222-BS - 20-Bit Stereo Audio Codec | Cirrus Logic
CS4222-BS

CS4222-BS - 20-Bit Stereo Audio Codec | Cirrus Logic

Cirrus Logic CS4222-BS is a 20-bit stereo audio codec with volume control, integrating stereo analog-to-digital and stereo digital-to-analog converters in a 28-pin SSOP package. The device operates from a single +5 V supply and uses delta-sigma conversion techniques for its stereo conversion paths. These core characteristics make the CS4222-BS a monolithic audio interface IC for systems that require both digital-to-analog playback and analog-to-digital recording functions. An audio codec is a mixed-signal semiconductor that converts audio between digital data and analog voltage signals. Within the broader integrated-circuit hierarchy, a codec belongs to the interface and audio-converter class, combining an ADC, DAC, volume control, and associated analog circuitry in one device. The CS4222 family therefore reduces the number of separate converters required in a stereo audio system while simplifying synchronization and analog-output implementation. The verified manufacturer information identifies a 20-bit resolution, four-channel audio configuration, delta-sigma conversion architecture, and single +5 V operation. Its on-chip output buffer produces differential line-level outputs for the left and right channels. The documented nominal output is 2.83 Vpp, or 1 Vrms, for each single-ended output at full-scale digital input, with a 2.3 V common-mode voltage. The corresponding differential signal is 5.66 Vpp, or 2 Vrms). The CS4222-BS also incorporates volume control, allowing playback amplitude to be adjusted within the codec rather than solely through external analog gain stages. This integration can simplify system architecture, but the exact control interface, supported audio data formats, converter performance, clock requirements, and recommended external networks must be confirmed from the manufacturer datasheet before layout or firmware development. Those detailed values are not present in the supplied verified extracts and are therefore not inferred here. Typical implementation roles include legacy stereo multimedia systems, audio capture and playback modules, digital mixing equipment, and embedded audio subsystems requiring separate transmit and receive paths. In such equipment, the codec can accept digital audio at its ADC input and provide amplified analog left and right outputs for external coupling, headphone, or line-stage circuitry. Its differential outputs may offer better rejection of common-mode noise than single-ended outputs when paired with a balanced receiver. A critical design consideration is that the codec cannot be evaluated from resolution alone. Designers should verify the complete interface protocol, sample-rate range, clocking scheme, analog input range, output-load capability, power sequencing, and external component recommendations in the manufacturer datasheet. The documented 10 kΩ output loading must also be respected because heavier loads can alter output level and distortion even if the nominal operating voltage remains correct. This product page consolidates verified CS4222-BS specifications, distributor availability references, package information, and engineering guidance into one searchable source. It also separates documented data from unresolved parameters, helping engineers avoid unsupported assumptions while evaluating this audio codec for a new or legacy PCB design.

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CS4222-DS - 20-Bit Stereo Audio Codec | Cirrus Logic
CS4222-DS

CS4222-DS - 20-Bit Stereo Audio Codec | Cirrus Logic

Cirrus Logic CS4222-DS is a 20-bit stereo audio codec with volume control, integrating analog-to-digital and digital-to-analog conversion in a 28-pin SSOP package. The device operates from a single +5 V supply and supports four-channel volume control according to the DigiKey product listing. Its delta-sigma conversion architecture, onboard output buffering, and differential line-level outputs make it suitable for multichannel consumer audio, sound-card, mixer, and digital-audio-interface equipment. An audio codec is an interface IC that converts analog sound into a digital bitstream and reconstructs digital audio into analog signals. In the broader semiconductor hierarchy, a codec belongs to interface ICs and audio codecs, combining mixed-signal converters with digital control and analog output circuitry. The CS4222 therefore provides both signal conversion and system-level volume management rather than operating only as a conventional digital interface controller. The CS4222 provides 20-bit stereo conversion and uses delta-sigma conversion techniques. Its on-chip buffer amplifier generates differential outputs capable of driving 10 kW loads, as stated in the CS4222 datasheet. Each output produces a nominal 2.83 Vpp, or 1 Vrms, signal for a full-scale digital input. The common-mode voltage is 2.3 V, and the two sides of each differential channel can represent a 5.66 Vpp, or 2 Vrms, differential signal. The single-supply architecture simplifies analog system design around a conventional +5 V rail. Digital control and analog conversion are consolidated in one IC, reducing the number of separate converters required in a stereo design. The integrated volume-control function can simplify control layout in systems that need programmable attenuation between digital sources and line-level outputs, although software control details and supported register values must be confirmed in the manufacturer datasheet before implementation. Typical uses include stereo sound cards, compact multimedia systems, powered speakers, home-audio preamplifiers, mixer inputs, USB or FireWire audio interfaces, and industrial monitoring equipment. The differential outputs are particularly useful when the downstream analog stage benefits from common-mode rejection and reduced susceptibility to ground-borne noise. Board-level filtering and grounding remain important because digital activity from the codec can couple into sensitive analog paths if the layout does not separate converter and output-current return paths. Designers should follow the recommended external component network shown in the Cirrus Logic CS4222 datasheet and preserve the differential output topology. Input and output decoupling should be placed close to the appropriate supply and signal pins, while analog and digital return currents should be routed carefully on mixed-signal boards. The 28-pin SSOP footprint is not interchangeable with leaded or differently pin-counted codecs without a PCB redesign. This product page consolidates verified distributor pricing, package information, converter performance, application guidance, and sourcing data. It also distinguishes verified CS4222-DS facts from parameters that still require confirmation, avoiding unsupported claims about equivalent codecs, exact pin functions, lifecycle guarantees, or unreported electrical limits.

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CS4223-BS - 24-Bit 105dB Stereo Audio Codec | Cirrus Logic
CS4223-BS

CS4223-BS - 24-Bit 105dB Stereo Audio Codec | Cirrus Logic

The Cirrus Logic CS4223-BS is a 24-bit, 105 dB dynamic-range stereo audio codec with integrated analog-to-digital and digital-to-analog converters, operating from a single +5 V supply in a 28-pin SSOP package. The converter uses delta-sigma conversion techniques, and the CS4223-BS configuration is identified by distributor data as a stereo codec without volume control. An audio codec is an interface IC that converts analog sound signals into digital data and reconstructs digital audio into analog signals. A codec belongs to the broader interface IC and signal-conversion hierarchy, combining an ADC, DAC, digital audio interface, clocking, and associated analog support functions. This integration reduces the number of external converters required in CD players, DVD systems, automotive audio equipment, consumer electronics, and other stereo-audio systems. Key features include 24-bit audio resolution, a specified signal-to-noise ratio of 105 dB, stereo ADC and DAC channels, delta-sigma conversion, and single +5 V operation. The 105 dB rating provides a concrete measure of the converter noise floor relative to the full-scale signal, while 24-bit words provide sufficient numerical resolution for professional and consumer audio paths. The 28-pin SSOP surface-mount package supports compact, board-level implementations. The device accepts digital audio through its serial audio interface and uses external clocking and synchronization signals for deterministic conversion. Delta-sigma architectures reduce the need for high-precision conversion components inside the signal path, although board layout, grounding, supply decoupling, and clock signal integrity remain important. Analog and digital sections should be routed to minimize coupling from switching nodes and high-current return paths. Typical applications include stereo CD and DVD audio, home-theater equipment, automotive sound systems, digital mixing consoles, multimedia appliances, and other systems requiring simultaneous analog-to-digital and digital-to-analog conversion. The CS4223-BS is appropriate where a 24-bit stereo codec and 105 dB dynamic range are required from one +5 V supply. Because the verified listing identifies this -BS option as lacking volume control, systems requiring an internal volume-control function should verify that requirement before design-in. For a new PCB, place all decoupling capacitors close to their supply pins, use a low-inductance ground reference, and route clock and data traces away from analog inputs. The +5 V rail should be filtered if nearby switching converters create ripple or high-frequency noise. Legacy-product risk should also be evaluated because the available cross-reference data labels the CS4223 family as obsolete and recommends consulting manufacturer lifecycle information before committing to a production run.

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CS4223-KS - 24-Bit 105dB Stereo Audio Codec | Cirrus Logic
CS4223-KS

CS4223-KS - 24-Bit 105dB Stereo Audio Codec | Cirrus Logic

Cirrus Logic CS4223-KS is a 24-bit, 105 dB stereo audio codec with integrated analog-to-digital and digital-to-analog converters, supplied in a 28-pin SSOP package. The device uses delta-sigma conversion, operates from a single +5 V power supply, and provides a 24-bit serial audio interface. It combines bidirectional stereo audio conversion in one package, reducing the number of separate converters required in a digital audio system. An audio codec is an interface integrated circuit that converts between analog audio signals and digital audio data. The CS4223 belongs to the broader codec hierarchy, which includes digital-to-analog converters, analog-to-digital converters, audio interface ICs, and signal-conversion semiconductors. In this device, stereo delta-sigma ADC and DAC sections share the same integrated package and serial digital audio connection. The primary verified performance features are 24-bit resolution, 105 dB dynamic range, stereo conversion, a 24-bit serial interface, operation from one +5 V supply, and low power consumption. These characteristics suit professional audio equipment, multichannel sound systems, consumer audio electronics, industrial monitoring, and embedded audio platforms where analog audio must be captured or reproduced using a digital signal path. The CS4223/4 family uses delta-sigma conversion techniques, allowing analog stereo signals and digital audio data to share a compact mixed-signal package. The CS4223-KS distributor description identifies this specific option as a 24-bit audio codec without volume control. That distinction is important because volume-control functionality must be verified in the manufacturer documentation before assuming equivalent behavior between CS4223 and CS4224 variants. Typical circuit roles include receiving digital audio data for conversion to stereo analog outputs and accepting stereo analog inputs for conversion to digital data. System designers must provide suitable input and output filtering, stable analog supply and ground distribution, correct serial-interface timing, and signal routing appropriate to the codec's application. The single +5 V supply simplifies rail planning, although analog and digital return-current paths still require careful PCB partitioning. Before layout, compare the exact CS4223-KS pinout and electrical limits against the selected schematic revision. The public search results identify the package as 28-pin SSOP, but they do not provide a complete verified pin table in the supplied data; no pin names are therefore inferred here. Likewise, sample rate, clock range, analog input and output range, and recommended external component values require confirmation in the manufacturer datasheet. This product page consolidates the verified distributor descriptions, manufacturer-family data, package information, and practical selection considerations for the CS4223-KS. It separates confirmed specifications from unavailable parameters and focuses comparison on genuine same-package family options rather than presenting unrelated codecs as drop-in replacements.

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CS4223-KSR - 24-Bit 105dB Stereo Audio Codec | Cirrus Logic (Tape & Reel)
CS4223-KSR

CS4223-KSR - 24-Bit 105dB Stereo Audio Codec | Cirrus Logic (Tape & Reel)

Cirrus Logic CS4223-KSR is a 24-bit, 105 dB stereo audio codec with integrated analog-to-digital and digital-to-analog converters, supplied in a 28-pin SSOP package. The device uses delta-sigma conversion, operates from a single +5 V power supply, and provides a 24-bit serial audio interface. It combines bidirectional stereo audio conversion in one package, reducing the number of separate converters required in a digital audio system. An audio codec is an interface integrated circuit that converts between analog audio signals and digital audio data. The CS4223 belongs to the broader codec hierarchy, which includes digital-to-analog converters, analog-to-digital converters, audio interface ICs, and signal-conversion semiconductors. In this device, stereo delta-sigma ADC and DAC sections share the same integrated package and serial digital audio connection. The primary verified performance features are 24-bit resolution, 105 dB dynamic range, stereo conversion, a 24-bit serial interface, operation from one +5 V supply, and low power consumption. These characteristics suit professional audio equipment, multichannel sound systems, consumer audio electronics, industrial monitoring, and embedded audio platforms where analog audio must be captured or reproduced using a digital signal path. The CS4223/4 family uses delta-sigma conversion techniques, allowing analog stereo signals and digital audio data to share a compact mixed-signal package. The CS4223-KSR distributor description identifies this specific option as a 24-bit audio codec without volume control. That distinction is important because volume-control functionality must be verified in the manufacturer documentation before assuming equivalent behavior between CS4223 and CS4224 variants. Typical circuit roles include receiving digital audio data for conversion to stereo analog outputs and accepting stereo analog inputs for conversion to digital data. System designers must provide suitable input and output filtering, stable analog supply and ground distribution, correct serial-interface timing, and signal routing appropriate to the codec's application. The single +5 V supply simplifies rail planning, although analog and digital return-current paths still require careful PCB partitioning. Before layout, compare the exact CS4223-KSR pinout and electrical limits against the selected schematic revision. The public search results identify the package as 28-pin SSOP, but they do not provide a complete verified pin table in the supplied data; no pin names are therefore inferred here. Likewise, sample rate, clock range, analog input and output range, and recommended external component values require confirmation in the manufacturer datasheet. This product page consolidates the verified distributor descriptions, manufacturer-family data, package information, and practical selection considerations for the CS4223-KSR. It separates confirmed specifications from unavailable parameters and focuses comparison on genuine same-package family options rather than presenting unrelated codecs as drop-in replacements.

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CS4224-BS - 24-Bit 105dB Stereo Audio Codec | Cirrus Logic
CS4224-BS

CS4224-BS - 24-Bit 105dB Stereo Audio Codec | Cirrus Logic

Cirrus Logic CS4224-BS is a 24-bit, 105 dB stereo audio codec with integrated analog-to-digital and digital-to-analog converters and volume control in a 28-pin SSOP package. The device combines a stereo 24-bit ADC and stereo 24-bit DAC, uses delta-sigma conversion techniques, and operates from a single +5 V power supply. An audio codec is a mixed-signal semiconductor that converts signals between the analog and digital domains. The CS4224 family belongs to the codec hierarchy, which includes audio codecs, interface ICs, data converters, and broader signal-processing semiconductors. Its integrated ADC and DAC reduce the number of external conversion components needed in professional audio, communications, and digital audio equipment. Key features include 24-bit conversion resolution, a stated 105 dB signal-to-noise characteristic, integrated volume control, stereo conversion channels, and operation from one +5 V supply. These characteristics make the device appropriate for audio capture and playback systems where a compact, dedicated codec is preferable to discrete converters. Its integrated volume function can simplify analog-level control, although system-level gain planning must prevent overload and preserve headroom. The CS4224-BS uses delta-sigma conversion to implement the analog-to-digital and digital-to-analog functions. According to the Cirrus Logic CS4224 family datasheet, the architecture is designed for high-performance 24-bit audio operation in a single integrated device. Exact interface timing, clock requirements, analog performance, input and output topology, and recommended external component values must be confirmed against the manufacturer datasheet before layout or firmware is finalized. Typical uses include digital audio consoles, multimedia and communications equipment, sound-card signal paths, and other stereo audio systems requiring simultaneous analog capture and playback. In such systems, the codec can sit between analog microphones or line-level sources and a digital audio processor, while digital program audio is converted back to analog for monitoring or amplification. Designers should follow the manufacturer pinout and reference connection exactly, paying particular attention to analog grounding, supply decoupling, clock routing, and the treatment of unused inputs and outputs. Because the verified product listing identifies the CS4224-BS as a 28-SSOP and describes it as a 24-bit, 105 dB codec with volume control, those details can be cited confidently; additional electrical values remain subject to the datasheet. This page consolidates the verified distributor identity, pricing reference, package information, family-level description, drop-in evidence, and practical design guidance. It also distinguishes confirmed specifications from parameters that still require verification, providing a more useful engineering record than an uncontextualized distributor listing.

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CS4225-BL Stereo ADC and Quad DAC | Cirrus Logic
CS4225-BL

CS4225-BL Stereo ADC and Quad DAC | Cirrus Logic

The Cirrus Logic CS4225-BL is a six-channel digital audio conversion system combining one stereo analog-to-digital converter and four digital-to-analog converters in a 44-pin PLCC package measuring 16.59 mm by 16.59 mm. The device uses delta-sigma conversion techniques and is intended for CD-quality music, FM-radio-quality music, telephone-quality speech, surround-sound, and automotive audio applications. A digital audio converter is an integrated circuit that converts audio between analog and digital signal domains. An ADC samples an analog input and represents it as digital data, while a DAC converts digital playback data into analog voltage signals. The CS4225 belongs to the broader digital-audio-converter hierarchy and integrates multiple conversion channels into one device, reducing the number of separate converter packages required in a multichannel audio system. The principal verified feature set includes two ADC channels and four DAC channels, producing six audio conversion channels in total. The converter architecture uses delta-sigma conversion techniques, a methodology commonly selected for high-resolution audio signal processing. Separate analog and digital power domains are identified in the datasheet, including a +5 V analog supply, a +5 V digital supply, analog-ground connections, and a digital-ground connection. The CS4225-BL is packaged as a 44-pin PLCC measuring 16.59 mm by 16.59 mm. This relatively large leaded package provides direct access to analog, digital, clock, data, control, and power pins, making it practical for through-hole assembly and legacy audio equipment. The supplied search results identify the device as an audio sample-rate converter from Cirrus Logic, although the complete numeric conversion-performance table is not included in the verified data supplied for this page. Typical uses include CD-quality music systems, FM-radio-quality music equipment, telephone-quality speech processing, surround-sound systems, and automotive audio platforms. The four DAC channels can serve multiple playback zones or output stages, while the stereo ADC channels can capture left and right analog inputs. Integration is especially useful when a design needs several conversion paths but has limited board space or requires one consolidated mixed-signal audio device. Designers should preserve separation between the analog and digital supply and ground networks, follow the datasheet's recommended decoupling and layout guidance, and verify all interface timing and signal levels before layout release. The provided data confirms the +5 V analog and digital supplies, but does not specify the required capacitor values, clock frequency, sample-rate limits, dynamic range, channel-to-channel isolation, or full pin assignments. Those values must be confirmed in the manufacturer datasheet before a new layout is released. This product page consolidates the verified distributor identification, package information, converter configuration, power-domain details, source links, and engineering application guidance. It also distinguishes verified facts from unavailable parameters, preventing unsupported performance claims while helping engineers evaluate the CS4225-BL for legacy multichannel audio designs.

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CS4226-BQ 6-Channel Surround Sound Codec | Cirrus Logic
CS4226-BQ

CS4226-BQ 6-Channel Surround Sound Codec | Cirrus Logic

The Cirrus Logic CS4226-BQ is a six-channel surround-sound audio codec with stereo analog-to-digital conversion, six digital-to-analog channels, and independent volume control, supplied in a 44-pin TQFP package measuring 10 mm by 10 mm. It operates from a 4.75 V to 5.25 V supply and is specified across a -40 °C to +85 °C temperature range. The supported digital interfaces include I2C and SPI, while the verified device data identifies a sampling-frequency range of 4 kHz to 50 kHz. An audio codec is a mixed-signal integrated circuit that converts between analog audio signals and digital audio data. Within the semiconductor hierarchy, it is an interface IC and audio codec rather than a conventional amplifier or standalone converter. The CS4226 combines delta-sigma conversion stages, a stereo ADC path, six DAC channels, independent channel-volume functions, and digital control into one device for multichannel audio systems. The principal feature of the CS4226-BQ is its six-channel DAC architecture with independently selectable volume control for each output. This allows a multichannel system to balance individual speaker or surround channels in software. The device also provides a stereo ADC, an I2C/SPI control interface, and a frequency range suitable for conventional digital audio streams. Its single 5 V operating region simplifies analog and digital supply planning when the rest of the system uses a compatible rail. The CS4226 family uses delta-sigma conversion techniques rather than the R-2R ladder architecture associated with some high-end audio converters. Delta-sigma converters integrate a noise-shaping and digital-filtering process into the conversion path. The CS4226 datasheet identifies the component as a surround-sound codec, and its control-port listings include SCL/CCLK, SDA/CDOUT, AD1/CDIN, AD0/CS, LRCK, SCLK, and the six DAC data inputs and outputs. Typical uses include surround-sound decoding in home theater equipment, multichannel amplifier systems, active speaker electronics, AV receivers, and other equipment requiring several independently controlled digital audio outputs. A stereo source can be routed into the codec's digital conversion and processing architecture, while separate digital streams or channels can be assigned to the six DAC outputs. The device can also be paired with external amplifiers when the required output power exceeds the codec's signal-routing role. Designers should treat the CS4226-BQ as a mixed-signal device and preserve clean separation between analog and digital return currents. The 5 V supply must remain within the specified 4.75 V to 5.25 V range, and unused analog, digital, and control resources should be terminated according to the manufacturer datasheet. PCB layout, grounding, clocking, and supported data-format details must be confirmed from the complete CS4226 documentation before a production design is released. This page consolidates verified distributor and datasheet information, organizes the commercial and technical selection questions engineers commonly need, and explicitly identifies parameters that require confirmation from the manufacturer documentation. That distinction is important because the public search results verify the core codec identity, package, supply range, temperature range, interface types, and sampling range but do not expose every electrical, timing, pin-level, and lifecycle detail.

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CS4227-KQ - Six-Channel 20-Bit Audio Codec | Cirrus Logic
CS4227-KQ

CS4227-KQ - Six-Channel 20-Bit Audio Codec | Cirrus Logic

Cirrus Logic CS4227-KQ is a single-chip audio codec with a 20-bit resolution, stereo analog-to-digital conversion, six digital-to-analog channels, and a 44-pin TQFP package measuring 10 mm by 10 mm. It operates from a +5 V supply and uses delta-sigma conversion techniques to integrate multiple audio conversion functions into one device. Independent volume controls are provided for each of the six D/A channels, allowing individual output-level adjustment in multichannel audio systems. An audio codec is a mixed-signal semiconductor that combines analog input conversion, digital audio processing, and analog output reconstruction. The CS4227 belongs to the broader ADC/DAC and audio-codec hierarchy, where the stereo ADC captures analog audio for digital processing and the six DAC channels reconstruct digital audio as analog signals. Integrating these functions can reduce the number of separate converters required in a multichannel audio system while simplifying synchronization and control. The CS4227-KQ provides stereo analog-to-digital conversion and six digital-to-analog outputs at 20-bit resolution. Its six independently selectable output volume controls are useful when different channels require separate attenuation or gain adjustment. The codec is designed around a +5 V supply, and the KQ ordering code identifies the 44-pin TQFP package offered for an ambient operating range of -10 °C to +70 °C. The device uses delta-sigma conversion to implement the analog-to-digital and digital-to-analog functions. This architecture is well suited to digital audio because it supports high-resolution conversion, integrated digital control, and multiple outputs in a single package. Its serial interface and converter architecture make it a candidate for professional audio equipment, multichannel recording systems, sound cards, mixer designs, and other systems requiring simultaneous playback and capture functions. A practical multichannel design can use the stereo ADC section for line or microphone-oriented analog inputs and the six DAC channels for independent playback outputs. Signal conditioning, grounding, and reference or clock implementation must be designed around the manufacturer’s recommended application circuit. Because the codec contains both analog and digital sections, converter performance also depends on careful supply partitioning, trace routing, and control of analog and digital return currents. The primary design tradeoff is functional consolidation versus specialized converter performance. Integrating eight conversion channels into one IC can simplify a multichannel audio board, but designers must still allocate board area for support components and must respect the recommended layout for analog inputs, digital interfaces, supply connections, and exposed thermal features. The 10 mm by 10 mm TQFP package is larger than many compact audio converters, so footprint planning remains important. This guide consolidates the confirmed codec architecture, package information, temperature range, interface considerations, application guidance, and qualified same-footprint variant information into an engineering-focused selection reference. It also distinguishes confirmed drop-in coverage from broader functional codecs, helping designers avoid assuming that a similar channel count automatically guarantees pin compatibility.

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CS4280-CM Audio Volume Control IC | Cirrus Logic | PCI
CS4280-CM

CS4280-CM Audio Volume Control IC | Cirrus Logic | PCI

Cirrus Logic CS4280-CM is a one-channel audio volume-control and power-management IC for PCI audio systems, supplied in a 100-pin MQFP package measuring 20 mm by 14 mm. The verified operating-temperature range is 0°C to +70°C, while the listed supply ranges are 3 V to 3.6 V and 4.75 V to 5.25 V. Its documented features include an integrated phase-locked loop, on-chip digital gain, an asynchronous digital serial interface, and power-management functions. The CS4280 is associated with CrystalClear PCI audio implementations and is commonly paired with the CS4297 audio codec. An audio volume-control IC is a specialized interface-circuit category that controls signal level and coordinates an audio subsystem with its digital host. Within the broader hierarchy, the CS4280-CM belongs to the audio special-purpose interface IC class, which falls under interface ICs and ultimately integrated circuits. Its role differs from a general-purpose audio codec: the volume-control device manages gain and supporting control functions, while the companion codec performs much of the audio conversion and signal processing. This division of responsibilities was common in PCI-based sound-card architectures. The CS4280-CM combines digital gain control with internal synchronization support. The integrated phase-locked loop can provide the timing reference required for coordinated digital audio operations, while the asynchronous digital serial interface allows the host controller to exchange control information with the device. On-chip digital gain provides software-addressable level adjustment without relying exclusively on an external passive attenuator. Together, these features support centralized volume control, mute-related system management, and coordinated operation with a companion audio codec. The CS4280 belongs to a family of legacy Crystal Semiconductor and Cirrus Logic audio devices designed for personal-computer sound-card implementations. Verified cross-reference information identifies CS4281-CM as an alternative, and the CS4280 is documented as pin-compatible with the earlier CS4614 and CS4622/CS4624 families. These relationships are useful for repair and legacy-platform work, although board-level compatibility must include verification of supply rails, clocking, software registers, and companion codec requirements. The MQFP package is intended for surface-mount assembly and provides a large, inspectable footprint compared with modern compact audio IC packages. Typical uses include CrystalClear PCI sound cards, DOS-era and Windows 98-era multimedia computers, multi-function audio adapters, and legacy industrial or retrocomputing systems that retain support for the CS4280 and its associated drivers. The CS4297-JQ is a relevant companion because verified sources specifically describe the CS4280 as commonly used with the CS4297 codec. The CS4216-KL represents another nearby audio-interface family that may be relevant when comparing platform architectures, although it is not presented as a direct substitute for the CS4280-CM. When repairing or repurposing a board, verify the complete 100-pin footprint, 3.3 V and 5 V rail requirements, clock connections, serial interface topology, and codec handshake before ordering. The documented 0°C to +70°C range limits deployment to commercial-temperature environments unless the surrounding system and the actual sourced component provide wider qualification. Because the verified material identifies the CS4280 family as an obsolete or end-of-life product, procurement planning should emphasize authorized inventory, traceable sourcing, and a full functional test after replacement.

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CS4297-JQ AC'97 Stereo Audio Codec | Cirrus Logic | PC
CS4297-JQ

CS4297-JQ AC'97 Stereo Audio Codec | Cirrus Logic | PC

Cirrus Logic CS4297-JQ is a 2-channel, AC'97 1.03-compatible stereo audio codec designed for PC multimedia systems and housed in a 48-TQFP 7 x 7 mm package. The device uses CrystalClear delta-sigma and mixed-signal technology to support high-quality audio in desktop, portable, and entertainment PCs. It integrates stereo modulation and a 48-kHz audio interface for legacy multimedia designs. An audio codec is a mixed-signal semiconductor that converts digital audio data into analog signals and accepts analog inputs for digital processing. In the product hierarchy, the CS4297-JQ is an audio codec and audio modulator, belonging to the broader interface IC and semiconductor categories. Its legacy AC'97 interface connects a host audio controller to external codec and speaker circuitry in PC sound-card architectures. The verified product data identifies the CS4297-JQ as an AC'97 1.03-compatible stereo codec with two channels. Its package is specified as 48-TQFP at 7 x 7 mm by DigiKey, while related Cirrus Logic records identify the package as LQFP. The compact surface-mount package supports compact desktop and portable multimedia layouts, although the large 48-pin footprint requires careful fanout and layout planning. Technical documentation describes the analog line inputs as internally biased at the Vrefout voltage reference and requiring AC coupling. The maximum allowable line input is 1 V RMS. These details make external coupling, input attenuation, and analog-ground return paths central to achieving predictable signal amplitude and reduced distortion in a legacy sound-card implementation. Typical applications include PC sound cards, desktop multimedia systems, portable entertainment computers, legacy AC'97 audio subsystems, and retro computer restorations. The device is particularly relevant when preserving an original SoundFusion architecture is more important than selecting a current USB or HD Audio codec. Designers should verify the complete pinout and electrical limits against the manufacturer datasheet before layout or repair work. AC-coupled line inputs require suitable passive components, while mixed-signal placement and grounding must keep switching and digital return currents away from sensitive audio paths. The listed alternatives should also be checked for exact interface, voltage, clocking, and pin compatibility rather than package alone. This page consolidates verified distributor descriptions, cross-reference findings, practical application context, and design cautions for engineers sourcing or restoring systems that depend on this discontinued stereo AC'97 codec.

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CS4299-XQ Stereo AC'97 Audio Codec | Cirrus Logic
CS4299-XQ

CS4299-XQ Stereo AC'97 Audio Codec | Cirrus Logic

The Cirrus Logic CS4299-XQ is a mixed-signal stereo audio codec designed for AC'97 2.1-compatible PC multimedia systems. It combines a digital controller interface, analog audio conversion, and CrystalClear delta-sigma mixed-signal technology in a surface-mount LQFP package. The device was intended to pair with a digital controller located on the PCI bus or integrated within system core logic, making it primarily relevant to legacy desktop, portable, and entertainment PC designs. An audio codec is a mixed-signal integrated circuit that converts digital audio data into analog signals and converts analog sound into a digital format for processing by a host controller. The CS4299-XQ is an AC'97 codec, so its principal interfaces are the Audio Codec '97 serial link and analog audio connections rather than a modern USB or I2S audio interface. AC'97 was designed for PC multimedia architectures and supports synchronized audio, modem, and control functions through a defined digital bus. According to the Cirrus Logic CS4299 datasheet, the CS4299 contains AC'97-compliant control registers and additional Cirrus Logic-defined control registers. These registers configure the codec's core functions and support firmware or software control of audio behavior. The implementation uses CrystalClear delta-sigma and mixed-signal technology, a Cirrus Logic approach intended to support high-precision audio conversion in multimedia equipment. The CS4299-XQ is relevant to retrofitted desktop computers, industrial legacy systems, embedded AC'97 hosts, audio test equipment, and restoration projects involving older PCI-based sound subsystems. Its AC'97 architecture provides a direct interface to compatible host controllers, while analog input and output stages support connections to microphones, line-level sources, speakers, and external audio amplifiers. For a new design, confirm that the host controller still supports AC'97 2.1 and verify the complete pin, clock, voltage, and analog specification before layout release. The CS4299 is a legacy codec, and modern systems commonly use USB audio, I2S, or integrated HD audio controllers instead. An existing motherboard is also a critical consideration because the required driver, interrupt, bus, and codec-support capabilities may not exist on current platforms. This page combines the confirmed codec architecture and AC'97 application information with engineering guidance, comparison fields, and sourcing links for the CS4299-XQ. It also identifies which electrical and package details should be checked against the manufacturer datasheet before production use.

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CS42L52-CNZ - 24-bit Low-Power Stereo CODEC | Cirrus Logic
CS42L52-CNZ

CS42L52-CNZ - 24-bit Low-Power Stereo CODEC | Cirrus Logic

The Cirrus Logic CS42L52-CNZ is a 24-bit, low-power stereo audio CODEC with integrated headphone amplifier and Class D speaker driver, housed in a 40-pin QFN-EP (6x6 mm) package. Key headline parameters include 98 dB dynamic range (A-weighted), -88 dB THD+N, and 1 W per channel Class D output capability into external speakers, all from a single supply rail down to 1.8 V. What is an audio CODEC? An audio CODEC (coder-decoder) is a mixed-signal IC that converts analog audio signals to digital (ADC path) and digital audio streams back to analog (DAC path), providing the bridge between microphones/speakers and a digital signal processor or application processor. Low-power CODECs sit in the broader power-management IC family and target portable, battery-powered audio applications where quiescent current, dynamic range, and integration directly impact playback time and listening quality. The CS42L52 integrates a flexible stereo analog input architecture with a 4:1 input mux, two headphone amplifiers capable of 44 mW per channel into 32 ohm loads, and a high-efficiency Class D speaker amplifier. Power consumption is 13 mW at 1.8 V in playback mode. The serial audio interface accepts standard I2S, left-justified, and right-justified formats. An on-chip PLL derives the internal audio clocks from a range of reference frequencies, simplifying system clocking. Typical applications include portable media players, smartphones, tablets, USB audio headsets, portable gaming devices, voice recorders, and Bluetooth/wireless audio docking stations. The CS42L52 suits any battery-powered stereo audio product where board area and power consumption are tightly constrained but high dynamic range and headphone or speaker drive capability cannot be compromised. When designing with this part, route analog inputs and outputs symmetrically, place decoupling capacitors close to each supply pin, and connect the exposed pad to a low-impedance ground plane for thermal dissipation and noise rejection. Per the CS42L52 datasheet, careful ground partitioning between analog and digital domains is required to achieve the rated 98 dB dynamic range. This page synthesizes Cirrus Logic datasheet specifications, real distributor pricing, verified drop-in alternatives, and practical application guidance not present on standalone component distributor pages.

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