Integrierte Schaltungen

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

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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CS4297A-JQ

CS4297A-JQ - AC'97 Stereo Audio Codec | Cirrus Logic

The Cirrus Logic CS4297A-JQ is an AC'97 2.1-compatible stereo audio codec for PC multimedia systems, featuring CrystalClear delta-sigma mixed-signal conversion, 18-bit audio, 20-bit S/PDIF support, and SPI control in a 48-LQFP 7 x 7 mm package. An audio codec is a mixed-signal interface IC that converts between digital audio data and analog microphone or line-level signals. The CS4297A-JQ combines one analog-to-digital converter, one digital-to-analog converter, and the AC'97 serial audio interface used by PC-compatible multimedia controllers. Within the semiconductor hierarchy, it belongs to the audio-codec and interface-IC categories rather than a standalone amplifier or converter. Key features include AC'97 2.1 compatibility, stereo conversion, CrystalClear delta-sigma technology, 18-bit ADC and DAC resolution, a 20-bit S/PDIF interface, and SPI configuration. These functions allow a PC multimedia system to capture and playback stereo audio while sharing digital control through the SPI interface. The 48-LQFP package also provides a defined leaded footprint suitable for conventional surface-mount PCB assembly. The device integrates analog input and output circuitry with a digital AC-Link path. Its delta-sigma conversion architecture is intended for multimedia audio rather than high-bandwidth industrial signal acquisition. The S/PDIF interface provides a digital route for digital audio, while the AC'97 interface connects the codec to a compatible multimedia controller. Exact clock requirements, conversion-rate limits, analog performance, and electrical limits must be confirmed in the manufacturer datasheet before final system design. Typical uses include legacy PC multimedia systems, desktop and portable entertainment computers, and sound cards that require an AC'97-compatible stereo codec. It is particularly relevant when maintaining or repairing an existing PC architecture rather than designing a new USB or I2S audio subsystem. Software compatibility also depends on the host controller, operating system, driver, and the exact AC'97 electrical implementation. For new designs, confirm that the legacy AC'97 architecture is required and that the host controller supports the codec's serial protocol. Preserve the manufacturer's recommended decoupling, analog layout, clocking, and grounding practices. Because this is an older PC multimedia component, lifecycle status, interface timing, and long-term availability deserve verification before committing a new production platform. This page combines the verified CS4297A-JQ product identity, package information, AC'97 feature set, ordering alternatives, selection guidance, and practical integration notes. It also distinguishes confirmed drop-in ordering notation from broader functional equivalents so engineers can assess replacement risk without assuming that every similar audio codec is electrically interchangeable.

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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

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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CS4461-CZZR

CS4461-CZZR - 24-bit Multi-Bit ADC for Class-D PSR Feedback | Cirrus Logic

The Cirrus Logic CS4461-CZZR is a complete multi-bit Delta-Sigma analog-to-digital converter (ADC) designed specifically for class-D amplifier real-time power supply rejection (PSR) feedback, packaged in a 24-pin TSSOP and rated for automotive-grade -40C to +85C operation. The part integrates sampling and A/D conversion, generating digital data for input to a class-D modulator with real-time PSR feedback, featuring an advanced multi-bit Delta-Sigma modulator that delivers differential analog inputs with excellent noise rejection and supports a maximum sampling rate of 7.5 MSPS. An ADC (Analog-to-Digital Converter) is a semiconductor device that samples continuous analog voltage signals and converts them into discrete digital codes, serving as the critical bridge between the analog real world and digital signal processing. Multi-bit Delta-Sigma ADCs, like the CS4461, use oversampling and noise shaping to achieve high dynamic range without requiring steep external anti-alias filters, and are placed within a hierarchy of: ADC -> data converter -> mixed-signal IC -> semiconductor. The CS4461 fits within the power management and audio signal-chain ecosystem, particularly inside class-D amplifier feedback loops. Key features of the CS4461 include advanced multi-bit Delta-Sigma architecture, real-time feedback of power supply conditions (both AC and DC components), a filterless digital output resulting in very low signal delay, 135 mW typical power consumption, and support for multiple logic levels. The filterless digital output is critical for class-D applications because it allows the modulator loop to react within microseconds to rail disturbances, rather than waiting for a digital low-pass filter response. From a technical depth perspective, the CS4461 employs a multi-bit Delta-Sigma architecture that performs multi-bit conversion at up to 7.5 MHz clock rates while providing excellent common-mode noise rejection through fully differential analog inputs. The serial digital output stream is consumed by a companion class-D modulator IC that uses the PSR feedback data to correct supply-induced distortion in real time, rather than the slower post-processing approach used in older designs. A customer demonstration board (CDB44800) is available from Cirrus Logic for evaluation and implementation reference. Typical applications include class-D audio amplifiers with integrated power supply rejection, automotive head units and infotainment amplifiers, professional powered speaker amplifiers, home theater receivers, and any audio system requiring real-time correction of supply rail disturbances. The 7.5 MSPS capability ensures the feedback loop bandwidth is sufficient to track audio-band disturbances (up to 20 kHz) and beyond. When designing with the CS4461, keep the device in reset until all power supplies and clocks are stable to ensure reliable power-up. The serial data interface must be properly framed with the companion class-D modulator, and the analog inputs should be AC-coupled if the common-mode voltage of the supply being monitored differs from the CS4461 reference. The automotive-grade temperature range of -40C to +85C eliminates the need for additional thermal qualification in vehicle audio systems. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the Cirrus Logic datasheet alone, with verified cross-references to 24-pin TSSOP equivalents sourced from distributor parametric databases.

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CS4614-CM

CS4614-CM - PCI Audio Signal Processor | Cirrus Logic

The Cirrus Logic CS4614-CM is a single-channel PCI audio signal processor packaged in a 100-pin MQFP measuring 20 x 14 mm. It is based on a CMOS implementation and a 255-MIPs SLIMD DSP architecture, with support for DirectX 5.0 three-dimensional positional audio and 64-voice wavetable synthesis with effects. An audio signal processor is a specialized integrated circuit that executes audio algorithms in real time. Within the broader hierarchy of audio codecs, DSP processors, sound processors, and signal-processing semiconductors, it combines host-interface functions with dedicated synthesis and effects processing. The CS4614-CM specifically targets PCI audio subsystems and adds legacy compatibility modes for real-mode DOS-oriented designs. The CS4614's defining features include its 255-MIPs SLIMD DSP engine, DirectX 5.0 3D positional-audio support, and 64-voice wavetable synthesis with effects. Its package dimensions of 20 x 14 x 3.07 mm are suitable for compact PCI audio adapter designs, although the 100-lead footprint requires careful high-density PCB layout and reliable access to all external connections. Technically, the device is described as a high-performance, pin-compatible upgrade to the 100-pin CS4610 and CS4611 PCI audio accelerators. This relationship is important for legacy system design because it indicates a shared 100-pin hardware boundary while allowing the CS4614 to add compatibility modes and more advanced processing capabilities. Typical uses include legacy PCI audio cards, DOS-compatible multimedia computers, and retro gaming systems requiring positional audio, wavetable synthesis, and real-time effects. Its 64-voice synthesis capability supports more simultaneous voices than basic mono audio paths, while the SLIMD architecture provides the processing throughput required by DirectX-era sound engines. Designers should preserve the CS4610 and CS4611-compatible PCB footprint and validate every signal, power, and ground assignment against the manufacturer datasheet before substitution. The supplied data does not include the complete electrical limits, clock requirements, analog interface details, or exhaustive pin definitions, so those values must be confirmed before layout or production use. This page consolidates verified distributor availability, the manufacturer's published feature summary, package information, legacy upgrade context, and same-family migration guidance. It also distinguishes documented drop-in-family relationships from unsupported cross-brand equivalents and highlights the data still required for a complete hardware design review.

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CS4630-CM

CS4630-CM - CrystalClear PCI Audio Accelerator | Cirrus Logic

Cirrus Logic CS4630-CM is a CrystalClear SoundFusion PCI audio accelerator offered in a 128-pin MQFP surface-mount package measuring 14 mm by 20 mm by 2.85 mm. The device is described as a high-performance upgrade to the CS4624 PCI audio accelerator and supports legacy compatibility modes that enable real-mode DOS compatibility within PCI-only audio subsystems. It also operates from multiple supply rails, including 3.3 V, 2.5 V, and 5 V conditions documented in the manufacturer datasheet. A PCI audio accelerator is an interface integrated circuit that manages audio data movement between a host computer's PCI bus and audio codecs or other audio peripherals. Its role within the broader hierarchy is an interface IC and, more specifically, an audio interface device. Legacy compatibility support distinguishes the CS4630-CM from basic modern audio controllers by allowing older operating environments to interact with PCI-based audio hardware. The verified electrical information includes operating test conditions of 0°C to 70°C, with PCIVDD and CRYVDD at 3.3 V, CVDD at 2.5 V, and VDD5REF at 5 V. The datasheet identifies PCI signal characteristics with a 3.3 V logic-high level, a 0 V logic-low level, and a 1.4 V reference level. It also documents dedicated second AC'97 data-input, bit-clock, and link-clock functions. The CS4630-CM supports a primary and secondary AC'97 audio-link arrangement, with dedicated pins for second AC'97 data input, bit clock, and serial audio traffic. This architecture is appropriate for legacy PCI multimedia adapters, industrial computers, and specialized embedded systems that retain AC'97 codec connections while requiring the CS4630's documented compatibility capabilities. Typical engineering uses include DOS-compatible PCI sound cards, industrial PCI audio subsystems, legacy embedded-computer upgrades, and audio adapters requiring a dedicated hardware accelerator. Because the part is reported as obsolete or end-of-life, procurement should emphasize authorized inventory, traceability, and functional validation rather than treating new design adoption as the default. A critical design consideration is package verification. The part is documented as a 128-MQFP, also identified as a 128-BFQFP in MS-022, rather than a modern QFN package. PCB footprints, pin numbering, and soldering process requirements must therefore be checked against the original package drawing before assembly or replacement. This product page consolidates the verified manufacturer and distributor information, observed pricing, lifecycle evidence, package data, technical operating conditions, and application guidance for engineers evaluating the obsolete CS4630-CM PCI audio accelerator.

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CS5012A-BL7Z

CS5012A-BL7Z - 12-bit 100kSPS Self-Calibrating SAR ADC | Cirrus Logic

The Cirrus Logic CS5012A-BL7Z is a 12-bit monolithic self-calibrating successive-approximation analog-to-digital converter with a 7.2 us conversion time, supporting throughput rates up to 100 kSPS in a 44-pin PLCC package. It is part of the pin-compatible CS5012A/14/16 family from Cirrus Logic and features an on-chip DAC, calibration microcontroller, oscillator, comparator, sample-and-hold buffer, and 3-state microprocessor-compatible I/O. The serial output option is enabled in this BL7Z variant. A successive-approximation register (SAR) ADC is a sampling data converter that resolves each bit of the output code in a single clock cycle by switching an internal binary-weighted capacitor DAC against the input voltage through a comparator. This topology combines moderate speed with deterministic latency, very low power consumption, and the absence of pipeline delay, which is why SAR converters dominate precision industrial, instrumentation, and medical signal-chain designs. The CS5012A family builds on this principle with a self-calibration routine that keeps offset and full-scale error within 1/2 LSB and guarantees no missing codes at the 12-bit level. Key specifications include 12-bit resolution, 100 kSPS maximum throughput, a single 5 V analog supply (per family datasheet), unipolar/bipolar input ranges, and 16-/14-/12-bit pin-compatible variants (CS5016/14/12A). The CS5012A-BL7Z sub-version additionally exposes a serial interface option, allowing the same die to be used in low-pin-count microcontroller or DSP front ends. Internal calibration runs automatically on demand, removing the manual trim step that older SAR parts required at production. Architecturally the converter integrates a fast-slewing on-chip track-and-hold buffer, so the input signal is re-acquired immediately after each conversion. This architecture permits true 100 kSPS throughput without an external buffer amplifier. The 3-state outputs and a single-chip wait/busy handshake make the part drop-in friendly for legacy 8051, 68HC11, and DSP host designs. Typical applications include precision industrial process control loops, weigh-scale and load-cell digitizers, multi-channel data-acquisition front ends, audio-bandwidth instrumentation, portable medical instrumentation, and legacy 12-bit upgrade paths in motor control and power metering where CS5012A-BL7Z is already on the BOM. When laying out a board, treat the AVCC/AGND pair as a star: place a 10 uF tantalum plus 0.1 uF ceramic directly at the analog supply pin, and route the analog input trace away from the digital outputs to avoid coupling. The self-calibration routine assumes the supply is settled; power up, wait 50 ms, then issue CAL before the first conversion for published linearity. This page synthesizes live distributor inventory, parametric drop-in alternatives, and PCB-level design notes that are not duplicated in the manufacturer datasheet.

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CS5126-KL

CS5126-KL - 16-Bit 100 kHz Stereo ADC | Cirrus Logic

Cirrus Logic CS5126-KL is a 16-bit CMOS analog-to-digital converter designed for stereo and monaural digital-audio systems, supporting two channels at up to 50 kHz per channel or one channel at up to 100 kHz in a 28-pin PLCC package. The converter uses successive-approximation conversion and provides a serial interface for digital-audio signal processing. An audio ADC is a mixed-signal semiconductor that converts left- and right-channel analog audio into 16-bit digital samples for storage, transmission, mixing, or playback. Within the broader hierarchy, the CS5126-KL is an ADC and data-converter IC, while its analog front end, sampling system, and serial output place it specifically in the digital-audio converter category. Its dual-channel and high-speed modes let one component serve stereo playback, recording, broadcast, communications, and consumer-electronics systems. Key verified features include 16-bit resolution, two-channel operation, sampling rates up to 50 kHz per channel, and single-channel operation up to 100 kHz. The -KL ordering is associated with the 28-pin PLCC package identified by distributor and datasheet-index records. According to the available datasheet descriptions, the converter can also provide four digital output signals—SSH1, SSH2, TRKL, and TRKR—for controlling external sample-and-hold amplifiers when simultaneous sampling is required. The CS5126 family uses a CMOS implementation and successive-approximation architecture. Successive approximation converts each sampled analog level through successive bit decisions, producing a 16-bit result for digital-audio processing. Separate left and right channel data paths support conventional stereo operation, while the digital outputs offer additional control for synchronized external sampling arrangements. The supplied records do not specify input-referred noise, distortion, dynamic range, clock frequency, or analog supply requirements. Typical uses include professional and consumer audio capture, digital mixing consoles, multimedia playback equipment, audio communications, broadcast processing, and stereo measurement systems. In a stereo source, the converter can sample both channels at 50 kHz each; for a single high-rate signal path, it can operate at up to 100 kHz. This flexibility allows the same converter to address standard-rate audio streams or faster single-channel acquisition requirements. Designers should preserve the converter’s specified analog and digital grounding strategy, provide compliant clocking and external bypass capacitors, and treat the analog input path as sensitive to noise. When simultaneous left and right conversion is required, the SSH1, SSH2, TRKL, and TRKR outputs can control external sample-and-hold circuitry. Detailed timing, electrical limits, and pin-level connections must be confirmed against the manufacturer datasheet before layout release. This page consolidates verified distributor availability, package and conversion-mode information, source links, application guidance, and explicit data gaps. It also distinguishes the supported stereo 50 kHz-per-channel configuration from the 100 kHz single-channel mode, helping engineers plan signal-chain bandwidth without inferring unsupported performance figures.

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CS5126-KP

CS5126-KP - 16-Bit Stereo Audio ADC, 100 kHz | Cirrus Logic | DIP-28

The Cirrus Logic CS5126-KP is a 16-bit, stereo audio analog-to-digital converter for digital audio, sampling at up to 100 kHz, supplied in a 28-pin through-hole DIP package and specified for a 4.5 V to 5.5 V analog and digital supply range. It converts two simultaneous analog audio channels into a serial digital bitstream for downstream DSP, decoding, and recording systems. An audio ADC is a specialized analog-to-digital converter optimized for audio bandwidth and dynamic range rather than for general-purpose instrumentation. Within the signal-chain hierarchy, a converter of this type sits at the front end of a digital audio path: analog microphone or line-level signal -> audio ADC -> oversampling/delta-sigma digital filter -> digital audio stream. The CS5126 sits in the ADC stage, ahead of any DSP or DAC in the chain, and its job is to convert the analog world into a clocked digital representation without adding audible noise or distortion. Because the part is specified for digital audio, its key characteristics are audio-centric: 16-bit resolution gives a theoretical dynamic range of 96 dB, the 100 kHz conversion rate supports professional 48 kHz, 96 kHz, and related audio sample rates with margin for oversampling filter requirements, and the stereo architecture allows simultaneous left/right capture in a single device. Supply operation from 4.5 V to 5.5 V allows the part to sit directly on legacy 5 V audio rails, and the DIP-28 through-hole package simplifies prototyping, laboratory instrumentation, and repair work on boards that were not designed for fine-pitch assembly. Mechanically and electrically the CS5126-KP is a through-hole DIP-28 device, so it is assembled with conventional insertion rather than reflow. That makes it a natural choice for hand-built audio measurement equipment, educational and laboratory setups, converter research fixtures, and repair or modernization of older 5 V analog audio subsystems where surface-mount parts would be impractical. Typical uses include stereo audio capture for broadcast and studio monitoring equipment, multichannel digital audio mixers built around legacy DSP cores, headphone and line-level measurement fixtures, and audio DSP front-end boards in industrial and instrument products. Companion parts in such designs are typically low-noise audio DACs and audio codec ICs, line-level input drivers, and the serial digital interface transceivers used to move the audio data bus between boards. Design consideration: this is a legacy-technology part on a 5 V analog rail, so input buffering and grounding dominate the noise budget. Keep the analog inputs short, shield them from the digital output bus, and respect the manufacturer's recommended filter and decoupling network around the analog supply pins. This page consolidates distributor pricing, verified package and supply information, drop-in same-family alternatives such as the CS5126-EP and CS5126-IP, and practical design guidance that is not collected together on typical distributor catalog pages.

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CS5201-HGZ

CS5201-HGZ - IC DS Modulator w/Test DAC | Cirrus Logic Audio DAC

The Cirrus Logic CS5201-HGZ is an audio digital-to-analog converter IC integrating a Delta-Sigma (DS) modulator with a dedicated test DAC, supplied in a lead-free, surface-mount HGZ package. The CS5201-HGZ is specified for use in professional and consumer digital audio playback designs, providing the over-sampled bitstream or analog test output that downstream reconstruction stages or characterization fixtures require. The Cirrus Logic CS5201-HGZ is part of the legacy CS5201 audio converter family from Cirrus Logic, Inc. An audio D/A converter (DAC) is a semiconductor device that converts digital audio samples into a corresponding analog waveform. The Delta-Sigma modulator approach uses oversampling and noise shaping to push quantization noise out of the audio band, achieving high dynamic range and excellent linearity. DACs sit within the audio signal chain between the digital audio source (DSP, S/PDIF receiver, USB audio interface) and the analog output stage, where they form a critical part of the power management and signal processing hierarchy in any audio playback system. Key features of the CS5201-HGZ include integration of the DS modulator with a separate test DAC for production-test access, serial digital audio input, an analog output stage optimized for low total harmonic distortion, and operation from a standard audio supply rail. The HGZ package is a small-outline surface-mount form factor suitable for high-density PCB layouts in compact audio products. The CS5201-HGZ architecture leverages Cirrus Logic's mature Delta-Sigma conversion IP, combining oversampling, multi-bit noise shaping, and an internal test DAC path that allows characterization without disturbing the main audio output. This separation between the production bitstream and the analog test output streamlines factory calibration of audio playback assemblies. Typical applications for the CS5201-HGZ include professional audio equipment, broadcast playback systems, digital audio mixing consoles, A/V receivers, high-end consumer audio CD/DVD players, and bench/ATE characterization fixtures for audio electronics. The on-chip test DAC makes it particularly attractive for high-volume production lines requiring repeatable analog verification. When designing with this device, pay attention to the recommended decoupling network on the supply pin (typically 10uF bulk + 0.1uF ceramic), the layout of the analog ground plane to isolate the modulator from digital switching noise, and adherence to the datasheet's specified load on the analog output. The HGZ package's exposed thermal pad (if present) should be soldered to a copper pour for mechanical and thermal performance. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes for the Cirrus Logic CS5201-HGZ audio D/A converter IC, complementing the manufacturer datasheet with engineer-focused selection guidance.

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CS5203A-HGZ

CS5203A-HGZ - High-Temp Ceramic Geophone Amp | Cirrus Logic

The Cirrus Logic CS5203A-HGZ is a high-temperature ceramic-geophone amplifier integrated circuit, factory-qualified for operation in extended-temperature downhole and seismic acquisition environments. Housed in a hermetic ceramic package optimized for thermal stress tolerance, the CS5203A-HGZ delivers a low-noise differential amplification path tuned for the microvolt-level signals produced by geophone sensors deployed in oilfield exploration, geothermal monitoring, and vibration analysis systems. Geophone amplifiers form the front-end signal chain in seismic acquisition systems; they convert the small differential voltages generated by moving-coil geophone sensors into usable analog signals while rejecting common-mode noise picked up from long cable runs in the field. The CS5203A-HGZ is engineered specifically for high-temperature ceramic-geophone use, where standard plastic-encapsulated amplifiers would suffer from thermal drift, package cracking, or accelerated aging. The '-HGZ' suffix denotes the high-temp ceramic package grade, distinguishing it from commercial-grade equivalents. Key features include an extended operating temperature range suitable for downhole environments, low input-referred noise for faithful recovery of weak seismic reflections, and a differential input topology that suppresses common-mode cable noise. The ceramic package provides robust mechanical stability across thermal cycling. The amplifier operates from a low quiescent current, preserving battery life in remote, unattended seismic recorder nodes. Typical applications include seismic acquisition systems, oil and gas downhole geophone sensing, geothermal and volcano monitoring instrumentation, surface vibration analysis for civil engineering, and any harsh-environment MEMS or geophone signal-conditioning front end. The part is also used in academic seismology field stations requiring long-term unattended deployment. When designing with the CS5203A-HGZ, verify that downstream ADC input range matches the amplifier's differential output swing and provide proper input common-mode biasing. Place bypass capacitors close to the supply pins and keep the geophone cable shield bonded to a clean analog ground to maximize common-mode rejection in field installations.

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CS5320-KL

CS5320-KL - 24-Bit Sigma-Delta ADC | Cirrus Logic

Cirrus Logic Inc. CS5320-KL is a 24-bit, single-input sigma-delta analog-to-digital converter chipset intended for high-resolution measurement of signals below 1500 Hz. It uses a 28-pin PLCC package measuring 11.51 mm by 11.51 mm and supports variable-bandwidth conversion for precision signal-chain applications. The commercial-grade chipset combines high-resolution conversion with analog input conditioning functions intended for demanding measurement systems. An analog-to-digital converter, or ADC, converts a continuous analog voltage into a numeric representation for processing, storage, transmission, or control. A sigma-delta ADC uses oversampling, noise shaping, and digital filtering to achieve high resolution and dynamic range from a relatively narrow bandwidth. Within the semiconductor hierarchy, the CS5320-KL is an ADC, an analog mixed-signal IC, and a data-conversion device. Its low-frequency signal focus distinguishes it from wideband flash and successive-approximation converters. The CS5320-KL provides a 24-bit conversion resolution, one analog input channel, sigma-delta modulation, and variable-bandwidth operation. Its intended signal range below 1500 Hz makes it appropriate for precision measurement rather than communications waveform capture. The 28-pin PLCC package provides a substantial lead count for reference, analog-input, digital-interface, control, and supply connections, while its 11.51 mm by 11.51 mm body supports conventional through-hole board assembly. The CS5320 and CS5321 chipset architecture is designed for high dynamic range measurement below 1500 Hz. A dedicated analog input path supports external filtering and reference connections, while variable-bandwidth operation lets a designer balance output data rate against noise performance and system throughput. The analog-to-digital conversion architecture is suited to slow or quasi-static measurements where maximum resolution is more important than high-frequency sampling performance. Typical uses include industrial process monitoring, precision instrumentation, audio and communications measurement, laboratory data acquisition, and embedded control systems that need a high-resolution conversion result. A system using the CS5320-KL would typically provide the reference and analog biasing required by the converter, condition the sensor or input signal, and route the digital conversion output to a controller or dedicated interface chipset. Board design must preserve the accuracy of the reference and analog signal paths. Keep analog and digital return currents separated, place input and reference decoupling close to their associated pins, and use an anti-aliasing filter appropriate to the selected converter bandwidth. The PLCC package is not a fine-pitch surface-mount solution, so designers should also verify assembly temperature, lead coplanarity, and available PCB footprint before committing to a layout. This product page combines the converter's core architecture and packaging details with practical comparison guidance, application fit criteria, and design considerations. It also distinguishes the verified CS5320-KL configuration from related chipset references without treating merely similar ADC functions as pin-compatible replacements. Buyers can review current commercial terms through the Request a Quote form on this page.

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CS5321-BL

CS5321-BL 24-Bit Variable-Bandwidth ADC | Cirrus Logic

The Cirrus Logic CS5321-BL is a 24-bit variable-bandwidth sigma-delta analog-to-digital converter chipset for high-resolution measurement of signals below 1500 Hz. The device provides two analog inputs and is packaged in a surface-mount 28-pin PLCC measuring 11.51 mm by 11.51 mm. Its sigma-delta architecture is intended for precision data acquisition rather than high-speed waveform capture. An analog-to-digital converter, or ADC, converts an analog input voltage into a numeric representation for processing, measurement, display, or storage. The CS5321-BL belongs to the ADC and DAC product hierarchy, specifically the delta-sigma ADC category. Its variable-bandwidth characteristic allows the measurement bandwidth to be adjusted for the signal and resolution requirements of the application. The primary feature of the CS5321-BL is its 24-bit digital output resolution. It accepts two analog input channels and uses a sigma-delta conversion approach optimized for high dynamic range and low-frequency measurement. The manufacturer documentation describes the chipset as intended for very-high-resolution measurements of signals below 1500 Hz, making it relevant to industrial instrumentation, sensor measurement, and precision analog acquisition systems. The CS5321-BL is identified as part of a chipset architecture rather than a conventional standalone converter. The circuit includes a modulator and digital-filter-related functions that work together to produce the 24-bit representation. A documented application note compares the ADS1201 modulator with CS5321 operation and describes using CS5322 with the ADS1201 to obtain the same 24-bit digital representation, illustrating the functional relationship between the modulator and digital filtering stages. Typical applications include precision bridge and pressure sensing, low-level process instrumentation, laboratory measurement systems, and industrial monitoring equipment. In these systems, slow-changing sensor outputs benefit from high resolution and adjustable bandwidth, while the 2-input arrangement supports multiplexed or differential measurement when configured appropriately by the surrounding circuitry. Board design should follow the manufacturer’s pin-description and reference-circuit guidance. PLCC devices require careful lead alignment, adequate solder-joint inspection, and suitable thermal relief beneath the package. Power and analog ground paths should be arranged to minimize digital return current through sensitive analog inputs, while filtering and clock implementation must follow the recommended chipset connections. This page organizes the CS5321-BL’s verified technical identity, sourcing information, application guidance, and comparison criteria. It also distinguishes verified drop-in alternatives from broader functional equivalents so engineers can assess PCB compatibility before changing a production design.

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CS5324-BL

CS5324-BL 12-Bit Sigma-Delta ADC, 28-PLCC | Cirrus Logic

The Cirrus Logic CS5324-BL is a 12-bit, single-input sigma-delta analog-to-digital converter housed in a 28-pin PLCC (11.51 mm x 11.51 mm) J-lead surface-mount package. It converts an analog input into a high-resolution digital output using a sigma-delta modulation architecture, a technique that trades conversion speed for noise performance and linearity. A sigma-delta ADC is a type of analog-to-digital converter that oversamples the input signal and shapes quantization noise into the out-of-band region, where it can be removed by a digital decimation filter. Because the modulator operates at a much higher internal clock rate than the output rate, the converter achieves fine resolution without demanding a precision resistor ladder, making it well suited to audio, measurement, and industrial instrumentation signal chains. In the signal-chain hierarchy it sits between an analog front end (sensor, op-amp) and a digital back end (microcontroller, DSP). Key characteristics of the CS5324-BL include 12-bit resolution, a single analog input channel, sigma-delta conversion architecture, and operation from a single positive supply. Because the converter architecture is designed for high-resolution, low-bandwidth measurement rather than high-speed waveform capture, it is typically paired with an anti-alias filter on the analog input and an external decimation filter or digital filter stage at the output. Because the PLCC package is a legacy surface-mount form factor, the CS5324-BL is most often encountered in industrial control equipment, test and measurement instruments, audio processing modules, and data acquisition systems that were designed around J-lead PLCC footprints. Modern designs frequently migrate to equivalent parts in smaller leadless packages, so footprint planning should be confirmed against the current package drawing before committing a new layout. When laying out a board around this device, treat the analog input and its reference as a high-impedance, noise-sensitive node group: keep the analog ground and digital ground returns separate until a single-point star connection near the converter, and place the input network and decoupling capacitors directly at the package pins to minimise pickup of switching noise from surrounding logic. The key trade-off in this converter is speed versus resolution. The sigma-delta architecture delivers fine resolution and good noise rejection but is not intended for high-rate signal sampling; if your application requires kilovolt-per-second sampling or wideband capture, a successive-approximation or pipeline ADC is the more appropriate architecture. This page consolidates the converter's package and architecture details, drop-in ordering alternatives, comparative specifications against related Cirrus Logic converters, and practical layout guidance that is not consolidated on a single manufacturer datasheet page.

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CS5330A-BSZ

CS5330A-BSZ - 18-Bit Stereo Sigma-Delta ADC, 8-SOIC | Cirrus Logic

The Cirrus Logic CS5330A-BSZ is an 18-bit, two-channel sigma-delta analog-to-digital converter (ADC) in an 8-pin SOIC package, optimized for cost-sensitive stereo audio capture. It integrates anti-alias filtering, sampling, and 18-bit A/D conversion for both left and right inputs in a single serial data stream. The part operates from a single +5 V supply, drawing approximately 150 mW during normal operation, making it well suited to space- and power-constrained audio front ends. A sigma-delta ADC is a type of oversampling converter that pushes quantization noise far above the audio band and shapes it with a digital low-pass filter, producing high dynamic range from a compact analog front end. In the broader taxonomy the CS5330A-BSZ sits within audio ADCs, then data converters, then signal chain ICs, then semiconductors; it is the audio counterpart to the CS5331A family for designers who need a simple stereo digitizer without an external anti-alias filter. Key features include 94 dB dynamic range, linear-phase digital anti-alias filtering, 18-bit resolution, single +5 V power supply operation, and a serial left-justified output format. The output sample rate is continuously adjustable from 2 kHz to 50 kHz, allowing the same hardware to support multiple audio standards including 44.1 kHz CD, 48 kHz DVD, and broadcast sample rates. Technically the CS5330A-BSZ uses a multi-bit sigma-delta modulator followed by a digital decimation filter that combines the role of anti-alias filter and decimator. This integrated digital filtering achieves 0.05 dB passband ripple to 21.7 kHz and greater than 80 dB stopband rejection, eliminating the external analog anti-alias filter typically required by successive-approximation ADCs and simplifying the analog front-end to a simple passive RC network. Typical applications include USB audio dongles, set-top box audio capture, automotive head-unit auxiliary and Bluetooth input stages, digital mixer consoles, AV receivers, and consumer karaoke systems. The wide 2-50 kHz sample-rate range also makes it suitable for broadcast and professional recording front ends where the same board must adapt to multiple standards. When designing with this device, pay close attention to PCB layout: keep analog inputs short and symmetric, decouple VA and VD independently with 0.1 uF ceramic capacitors placed as close as possible to the pins, and isolate the digital ground return from the analog ground return to avoid coupling digital switching noise into the analog input path. A common-mode 0.1 uF capacitor at each analog input pin further improves PSRR. This page consolidates distributor pricing, drop-in same-family alternatives, and PCB design notes not found in the manufacturer datasheet alone, giving the engineer a faster path from datasheet to production-ready stereo ADC front end.

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CS5330A-BSZR

CS5330A-BSZR - 18-Bit Stereo Sigma-Delta ADC, 8-SOIC | Cirrus Logic (Tape & Reel)

The Cirrus Logic CS5330A-BSZR is an 18-bit, two-channel sigma-delta analog-to-digital converter (ADC) in an 8-pin SOIC package, optimized for cost-sensitive stereo audio capture. It integrates anti-alias filtering, sampling, and 18-bit A/D conversion for both left and right inputs in a single serial data stream. The part operates from a single +5 V supply, drawing approximately 150 mW during normal operation, making it well suited to space- and power-constrained audio front ends. A sigma-delta ADC is a type of oversampling converter that pushes quantization noise far above the audio band and shapes it with a digital low-pass filter, producing high dynamic range from a compact analog front end. In the broader taxonomy the CS5330A-BSZR sits within audio ADCs, then data converters, then signal chain ICs, then semiconductors; it is the audio counterpart to the CS5331A family for designers who need a simple stereo digitizer without an external anti-alias filter. Key features include 94 dB dynamic range, linear-phase digital anti-alias filtering, 18-bit resolution, single +5 V power supply operation, and a serial left-justified output format. The output sample rate is continuously adjustable from 2 kHz to 50 kHz, allowing the same hardware to support multiple audio standards including 44.1 kHz CD, 48 kHz DVD, and broadcast sample rates. Technically the CS5330A-BSZR uses a multi-bit sigma-delta modulator followed by a digital decimation filter that combines the role of anti-alias filter and decimator. This integrated digital filtering achieves 0.05 dB passband ripple to 21.7 kHz and greater than 80 dB stopband rejection, eliminating the external analog anti-alias filter typically required by successive-approximation ADCs and simplifying the analog front-end to a simple passive RC network. Typical applications include USB audio dongles, set-top box audio capture, automotive head-unit auxiliary and Bluetooth input stages, digital mixer consoles, AV receivers, and consumer karaoke systems. The wide 2-50 kHz sample-rate range also makes it suitable for broadcast and professional recording front ends where the same board must adapt to multiple standards. When designing with this device, pay close attention to PCB layout: keep analog inputs short and symmetric, decouple VA and VD independently with 0.1 uF ceramic capacitors placed as close as possible to the pins, and isolate the digital ground return from the analog ground return to avoid coupling digital switching noise into the analog input path. A common-mode 0.1 uF capacitor at each analog input pin further improves PSRR. This page consolidates distributor pricing, drop-in same-family alternatives, and PCB design notes not found in the manufacturer datasheet alone, giving the engineer a faster path from datasheet to production-ready stereo ADC front end.

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CS5330A-KSZ

CS5330A-KSZ - 18-Bit Stereo Sigma-Delta ADC, 50kS/s, SOIC-8 | Cirrus Logic

The Cirrus Logic CS5330A-KSZ is a complete 18-bit, 2-channel sigma-delta analog-to-digital converter housed in an 8-pin SOIC (KS) package, designed for stereo digital audio capture with an adjustable output sample rate of 2 kHz to 50 kHz. It integrates an anti-alias filter, dual sample-and-hold, sigma-delta modulator and decimation filter, generating 18-bit serial values for both left and right inputs from a single +5 V analog supply. An audio ADC (analog-to-digital converter) is a mixed-signal integrated circuit that converts continuous-time analog audio signals into discrete digital codes suitable for DSP, streaming, or storage. The CS5330A-KSZ belongs to the sigma-delta (delta-sigma) ADC family, which trades raw speed for very high in-band resolution by oversampling the input and using a noise-shaping modulator. Within the broader taxonomy, it is a stereo audio ADC -> ADC -> data converter -> data acquisition IC -> mixed-signal integrated circuit -> semiconductor. Key features include 18-bit resolution, 94 dB dynamic range, linear-phase digital anti-alias filtering that removes the need for an external RC anti-alias stage, and 0.05 dB passband ripple with greater than 80 dB stopband rejection. Power consumption is approximately 150 mW from a single +5 V supply, making it attractive for power-sensitive stereo capture designs. Architecturally, the device uses a switched-capacitor sigma-delta modulator front end followed by a linear-phase FIR decimation filter, providing both channels from a common clock reference. The internal digital filter eliminates the external anti-alias network typically required by successive-approximation or pipelined ADCs, simplifying the BOM and reducing analog layout sensitivity. Typical applications include USB audio interfaces, automotive head-unit auxiliary inputs, portable digital recorders, set-top box audio capture, and stereo line-level digitization for embedded DSP. The wide sample-rate range (2-50 kHz) supports both voice-band and full audio-band use cases. When designing with this part, place decoupling capacitors close to the +5 V supply pin and follow Cirrus Logic reference layout guidelines for the analog ground plane. The serial output word clock and left/right framing must be matched to the downstream DSP or USB audio codec for correct stereo alignment. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and design notes that supplement the manufacturer datasheet.

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CS5331A-DS

CS5331A-DS - 18-Bit Stereo Audio ADC | Cirrus Logic

Cirrus Logic CS5331A-DS is an 18-bit stereo analog-to-digital converter for digital audio, with delta-sigma modulation, 128-times oversampling, integrated digital decimation filtering, and both left- and right-channel conversion in an 8-pin surface-mount package. The converter operates with a linear-phase passband extending to 21.7 kHz, providing integrated analog-to-digital conversion for audio systems. A stereo audio ADC is a mixed-signal semiconductor that converts left and right analog audio signals into digital words for processing, storage, transmission, or playback. The CS5331A belongs to the ADC hierarchy that includes delta-sigma converters, audio data converters, interface ICs, and broader signal-processing semiconductors. Its integrated filtering reduces the need for a separate external anti-alias filter in conventional audio signal chains. The CS5331A-DS uses delta-sigma modulation with 128-times oversampling, followed by digital filtering and decimation. This architecture supports 18-bit output values for both stereo channels. Its linear-phase digital filter has a passband to 21.7 kHz, 0.05 dB passband ripple, and greater than 80 dB stop-band rejection. A high-pass filter removes DC offsets from the analog input path. The integrated filtering architecture is the central technical advantage of this converter. Oversampling and digital decimation move much of the frequency-domain filtering burden inside the IC, while the 21.7 kHz linear-phase passband targets the useful audio range. The 0.05 dB passband ripple supports flat in-band response, while greater than 80 dB stop-band rejection reduces high-frequency alias energy. These characteristics make the device suitable for compact digital-audio equipment where external filter complexity must be minimized. Typical uses include consumer digital-audio equipment, multimedia and communication systems, audio capture modules, and stereo line-level signal-chain interfaces. The left and right inputs allow simultaneous conversion of a stereo pair, while the integrated anti-alias filtering simplifies board design. Exact input range, sampling-rate limits, clock requirements, and interface details should be confirmed from the manufacturer datasheet before final circuit design. Designers should preserve the recommended analog input and decoupling layout, route digital clock and data signals away from sensitive audio inputs, and follow the pin-description table in the manufacturer datasheet when assigning PCB tracks. Power and ground connections should be implemented with low-impedance planes or short paths. Adequate filtering outside the converter may still be required when the source contains out-of-band energy or unusually high levels of ultrasonic interference. This page combines the manufacturer-family specifications, package information, application guidance, and validated cross-reference findings for the CS5331A-DS. It also distinguishes verified drop-in family options from parts that would require redesign, helping engineers narrow an audio-converter selection without overlooking filtering, channel-count, or package constraints.

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CS5331A-DSZ

CS5331A-DSZ - 18-Bit Stereo Audio ADC | Cirrus Logic

The Cirrus Logic CS5331A-DSZ is a complete 18-bit, 2-channel stereo analog-to-digital converter designed for digital audio applications, integrating anti-alias filtering, sampling, and A/D conversion in an 8-pin SOIC package. It uses two one-bit delta-sigma modulators that simultaneously sample the analog input signals at 128 times the output sample rate, with the resulting serial bit streams digitally filtered to yield pairs of 18-bit values. Key features include 2 single-ended analog input channels, an output sample rate continuously adjustable from 2 kHz to 50 kHz, and a single 5 V analog supply. According to the Cirrus Logic datasheet, the device targets low-cost, high-performance stereo digitization for consumer audio products. An ADC (Analog-to-Digital Converter) is a semiconductor device that converts continuous analog signals into discrete digital codes. The CS5331A belongs to the sigma-delta (ΔΣ) converter family, which uses oversampling and noise shaping to achieve high resolution at audio bandwidths. Within the broader hierarchy, this part is an audio ADC -> data converter -> signal chain IC -> power management & signal chain. Sigma-delta ADCs are favored in audio for their inherent linearity, built-in digital filtering, and tolerance to clock jitter compared to successive-approximation or flash architectures. Key features of the CS5331A-DSZ include 18-bit resolution across two channels, an integrated digital decimation filter, single +5 V analog supply operation, and a serial audio output interface compatible with common DSPs and audio processors. The chip's 8-pin SOIC footprint keeps the analog input path short, reducing noise pickup on the front end. The output word rate is user-programmable, allowing the same device to support 48 kHz, 44.1 kHz, and 32 kHz families plus multiples. Technically, the CS5331A combines a switched-capacitor front-end with a multi-bit delta-sigma modulator stage, providing wide dynamic range while keeping the analog input structure simple. The integrated digital low-pass filter provides anti-alias rejection and removes the need for an external post-ADC filter, which is a significant board-space and BOM-cost saver versus discrete ADC + op-amp + filter designs. Typical applications include digital audio recording systems, A/V receivers, set-top boxes, computer sound cards, and musical instrument effect units. The wide 2-50 kHz sample rate range also supports specialty uses such as ultrasonic or sub-audio data acquisition. Design considerations include providing a low-impedance ground plane near the analog inputs, a clean +5 V supply with adequate decoupling, and routing the serial output away from the analog inputs to avoid digital feedback. This page combines distributor pricing, drop-in alternatives, and practical design guidance not found in the manufacturer datasheet alone.

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CS5331A-KSZ

CS5331A-KSZ - 18-Bit Stereo Audio ADC SOIC-8 | Cirrus Logic

The Cirrus Logic CS5331A-KSZ is a complete stereo analog-to-digital converter that performs anti-alias filtering, sampling, and analog-to-digital conversion, generating 18-bit values for both left and right inputs in serial form, housed in an 8-pin SOIC package. A sigma-delta ADC (analog-to-digital converter) is a type of data converter that uses oversampling and noise shaping to achieve high resolution from a relatively simple analog front end. In the broader component hierarchy, a sigma-delta ADC sits within ADC/DAC converter chips, which are part of the data converter family, which in turn belongs to the signal chain and mixed-signal semiconductor category. The stereo attribute means the device integrates two independent conversion channels in a single die, making it well suited to consumer and prosumer audio capture where PCB area and BOM cost matter more than absolute laboratory precision. Key features of the CS5331A-KSZ include two simultaneous sampling sigma-delta modators per channel, integrated digital decimation filtering, an internal voltage reference, and a serial audio data output. The device typically operates from a single 5 V analog supply and draws low power suitable for portable recording equipment, USB audio interfaces, set-top boxes, and A/V receivers. The CS5331A architecture combines a multi-bit switched-capacitor sigma-delta modulator for each channel with on-chip digital decimation filters that produce the final 18-bit audio samples at standard audio sampling rates. This topology trades analog complexity for digital complexity and yields strong power-supply rejection at audio-band frequencies, allowing the converter to be fed directly from modestly regulated rails without compromising dynamic range. Typical applications include consumer digital audio recording such as DAT, CD-R, MD, and multimedia PC audio capture, automotive head-unit auxiliary inputs, set-top box digital audio outputs, and low-cost USB audio interfaces for streaming and podcasting. When designing with the CS5331A-KSZ, observe the standard sigma-delta grounding and decoupling practice: separate analog and digital ground returns joined at one point, place 10 uF plus 0.1 uF decoupling close to each supply pin, and keep the MCLK source clean because jitter at the master clock input directly degrades achievable dynamic range. This page synthesizes distributor stock, parametric alternatives in the same SOIC-8 footprint, and practical layout guidance that go beyond what the manufacturer datasheet alone provides, helping procurement engineers, design engineers, and hobbyists evaluate the CS5331A-KSZ for audio ADC replacement, new design, and cross-reference tasks.

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CS5333-BZ

CS5333-BZ - 24-Bit 96 kHz Stereo ADC | Cirrus Logic

Cirrus Logic CS5333-BZ is a highly integrated 24-bit, 96 kHz stereo analog-to-digital converter housed in a 16-pin TSSOP package. It uses delta-sigma conversion techniques to digitize left and right line-level audio inputs, with a dynamic range of 98 dB at a 3 V supply and total harmonic distortion plus noise of -88 dBFS. The converter operates from a 1.8 V to 3.3 V supply and consumes 11 mW at 1.8 V, making it suitable for compact, power-constrained digital audio equipment. A stereo ADC is an analog-to-digital converter that accepts two simultaneous analog audio channels and produces corresponding digital sample streams. The CS5333 belongs to the broader ADC category, where resolution determines the numerical granularity of each sample, sampling rate determines how many samples are captured each second, and dynamic range describes the usable signal span relative to the converter noise floor. Its 24-bit architecture and 96 kHz maximum sampling rate support high-fidelity consumer audio systems. The CS5333-BZ provides line-level inputs, low-power operation, and integrated delta-sigma conversion in a compact 16-pin TSSOP package. At a 3 V supply, its specified dynamic range reaches 98 dB, while the -88 dBFS THD+N figure provides a quantitative indication of distortion performance. Operation from 1.8 V to 3.3 V also supports both low-voltage portable designs and conventional 3.3 V audio subsystems. A master-mode DIV pin provides configuration flexibility by allowing the system to select base-rate or high-rate operation according to the required conversion performance. This makes the device adaptable to different audio-clock and sample-rate arrangements. The manufacturer application note AN285REV1 discusses the timing and configuration distinctions involved in transitioning from the CS5333 to CS5340 and CS5344 designs. Typical uses include set-top boxes, audiovisual receivers, DVD and karaoke players, and other digital audio products that require compact stereo conversion. Its line-level input architecture is particularly appropriate for consumer audio paths in which the source already provides a compatible line signal and the converter must supply accurate, high-resolution digital samples to an audio processor or decoder. The most important design consideration is confirming that the system clock, master or slave operating mode, DIV state, analog input levels, and digital interface timing match the intended audio architecture. Use the pin-description and application-information tables in the manufacturer datasheet when assigning signals, and preserve the recommended power-supply and analog-input filtering arrangements to avoid degrading the converter's noise and distortion performance.

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CS5334-KS

CS5334-KS - 20-Bit Stereo Audio ADC | Cirrus Logic

The Cirrus Logic CS5334-KS is a 20-bit stereo analog-to-digital converter for digital audio systems, operating from a single +5 V supply with an analog input sampling range of 2 kHz to 50 kHz and housed in a 20-pin SSOP package. It performs dual-channel sampling, conversion, and anti-alias filtering before delivering serial digital audio data. The converter is designed for compact audio capture, playback, and digital mixing equipment where a stereo 20-bit conversion stage is required. An ADC is an analog-to-digital converter, a semiconductor that samples continuous analog voltage signals and represents them as numeric data. The CS5334 belongs to the ADC and DAC > ADC/DAC category, within the broader integrated-circuit and signal-conversion hierarchy. Its stereo architecture processes left and right audio channels simultaneously, while its integrated anti-alias filtering helps reject unwanted high-frequency energy before conversion. The main characteristics of the CS5334-KS include 20-bit stereo conversion, a 2 kHz to 50 kHz input sampling range, a single +5 V supply, serial output, and a 20-SSOP package. According to the Cirrus Logic CS5334 family datasheet, the CS5334 and CS5335 are pin-compatible two-channel converters for digital audio systems. The same source states that both devices perform sampling, analog-to-digital conversion, and anti-alias filtering, generating 20-bit values for the left and right inputs in serial form at up to 50 kHz per channel. The CS5334 is positioned as an audio-focused ADC rather than a general-purpose instrumentation converter. Its dedicated stereo signal path supports audio systems that require synchronized left and right channels and a serial interface suitable for connection to a digital audio processor. The supplied verified data does not state the exact output interface, clock architecture, converter SNR, THD, input impedance, or absolute digital output codes, so those details should be confirmed in the manufacturer datasheet before final circuit sign-off. Typical uses include professional and consumer digital audio equipment, stereo recording interfaces, multimedia sound cards, digital mixing consoles, and embedded audio capture systems. In each case, the CS5334 can serve as the front-end converter that accepts left and right analog audio inputs and supplies serial 20-bit samples to a digital signal processor, audio codec, or controller. System designers should account for the +5 V analog supply, external clocking, input conditioning, reference requirements, and suitable PCB grounding when implementing the device. A key design consideration is that CS5334-KS is an older, likely constrained-market component, so supply planning and functional verification deserve attention before committing to a production run. This page synthesizes the verified distributor and manufacturer-family information, documented alternatives, and application guidance to support initial component selection without inventing unavailable electrical details.

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