Circuits intégrés

AK4136VQ

AK4136VQ - 2-Channel 384kHz 32-Bit SRC | AKM

The Asahi Kasei Microsystems AK4136VQ is a 2-channel asynchronous digital audio sample rate converter operating from 8kHz to 384kHz, processing up to 32-bit audio data in a 48-LQFP package. Its internal oscillator eliminates the need for an external master clock when used in asynchronous systems, simplifying clock-domain conversion between source and destination audio devices. A digital sample rate converter, or SRC, is an interface IC that resamples and filters digital audio between clocks with different frequencies. In the product hierarchy, a SRC belongs to digital audio signal-processing ICs and supports audio converters, receivers, network-audio equipment, and test systems. The AK4136 is particularly useful when a transmitter or player uses a different clock domain from the audio source. The AK4136 supports two channels, 32-bit audio processing, and input and output sample rates spanning 8kHz through 384kHz. According to the manufacturer datasheet, its internal oscillator means that external master clocks are not required for asynchronous conversion. This can reduce clock-tree complexity, although the converter still requires correct power, ground, digital-interface, and signal-integrity implementation. The 32-bit format and 384kHz maximum rate suit high-resolution audio paths, studio equipment, broadcast infrastructure, digital audio workstations, and consumer systems that need format or clock-domain adaptation. A practical design must still account for required input and output formats, supported clock configurations, filter behavior, grounding, decoupling, and signal routing; those details must be checked in the complete manufacturer documentation. The principal design consideration is integration. The AK4136VQ can simplify systems where input and output rates are unrelated because its internal oscillator supports asynchronous operation. This avoids one external master-clock source, but it does not eliminate the need for stable local supplies, short digital traces, controlled return paths, and verification of the converter configuration during startup. This page consolidates the verified manufacturer datasheet, distributor availability, package information, technical search context, and practical engineering guidance. It intentionally avoids asserting electrical, pin, lifecycle, or drop-in replacement details that were not present in the supplied source data.

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AK4137EQ

AK4137EQ - 2-Channel 32-Bit 768kHz Audio SRC | AKM

The Asahi Kasei Microdevices AK4137EQ is a two-channel digital sample rate converter supporting input and output sample rates from 8kHz to 768kHz, with 32-bit processing and PCM-DSD conversion capability in a 48-LQFP 7x7 mm package. It is designed for high-end audio systems, USB-DACs, and digital-audio equipment that must reconcile different sampling domains. A digital sample rate converter is an interface IC that resamples or changes the clock rate of digital audio data between incompatible source and destination rates. The AK4137EQ includes an internal oscillator, so it does not require an external master clock for its asynchronous conversion operation. This simplifies system configuration when the source and destination audio domains use unrelated clocks. Key features include two-channel operation, 32-bit sample processing, asynchronous conversion, input and output rates spanning 8kHz to 768kHz, and PCM-DSD data conversion. The internal oscillator reduces external clock infrastructure, while the broad sample-rate range supports professional audio, USB-DAC, and multirate digital-audio designs. The device is supplied in a 48-LQFP package identified by DigiKey as 48-LQFP (7x7). The AK4137EQ is intended for applications where audio data arrives from a source clock domain and must be delivered to a DAC, decoder, recorder, or other digital-audio subsystem operating at another rate. Its sample-rate flexibility makes it useful for format bridging, asynchronous playback paths, and PCM-to-DSD or DSD-to-PCM conversion as described by the manufacturer. Designers should verify the complete pinout, interface logic, clock requirements, supported audio formats, control signaling, and electrical limits against the manufacturer datasheet before layout or firmware implementation. The available verified sources do not provide complete pricing, pin-level assignments, or detailed timing tables, so those values remain data-needed rather than inferred.

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AK4181A

AK4181A - 4-Wire Touch Screen Controller, 12-bit SAR ADC | AKM

The AKM AK4181A is a 4-wire resistive touch screen controller that integrates a 12-bit successive-approximation-register (SAR) analog-to-digital converter with a maximum sampling frequency of 125 kHz. Housed in a compact TSSOP surface-mount package, the AK4181A detects pressed-screen coordinates by performing two successive A/D conversions on the touch-panel analog signals and also measures pen-pressure (Z-axis) touch force. A touch screen controller is a mixed-signal data-acquisition IC that bridges a 4-wire resistive touch panel and an embedded host MCU. The AK4181A sits in the broader signal-chain hierarchy as: touch-screen controller -> resistive-touch digitizer -> data-acquisition IC -> analog front-end -> semiconductor. By handling the analog measurement locally and presenting digital results to the host, the part removes analog switching and biasing complexity from the host firmware, an essential role in any handheld, HMI, or industrial-control system using legacy resistive panels. Key features include pen-pressure measurement (Z-axis), an on-chip thermal sensor for system-temperature monitoring, two auxiliary analog input channels for general-purpose ADC use, direct battery-voltage measurement, an on-chip 2.5 V voltage reference, and a 12-bit SAR ADC with integrated sample-and-hold. The low-power architecture supports battery-powered handheld designs, while the direct-battery-measurement channel allows the host to monitor its own supply without extra external dividers. Typical applications include resistive-touch human-machine interfaces (HMIs), handheld data terminals, industrial control panels, point-of-sale (POS) terminals, consumer electronics with resistive touch, and portable instrumentation. The auxiliary ADC inputs and on-die temperature sensor make the AK4181A useful even in systems that do not require touch input. Design consideration: the 4-wire resistive interface requires proper PCB routing to keep the X/Y drive signals away from noisy digital traces, and the SAR converter's 125 kHz maximum sampling rate limits touch-report rates to roughly a few hundred Hz. Designers should also account for the part's TSSOP thermal envelope and ESD handling at the panel connector. This page synthesizes distributor pricing, drop-in alternatives, application examples, and practical design notes not found in the manufacturer datasheet alone - giving engineers a one-stop reference for evaluating the AK4181A in new designs and as a replacement candidate in legacy 4-wire touch systems.

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AK4432VT

AK4432VT - 32-Bit 192kHz Stereo Audio DAC | Asahi Kasei

Asahi Kasei Microdevices AK4432VT is a 32-bit, two-channel advanced audio digital-to-analog converter with operation up to 192 kHz, 108 dB dynamic range, and a 16-pin TSSOP package. The AK4432VT accepts digital audio through an I2S interface and provides single-ended SCF outputs for high-end audio systems. Its operating voltage is 3.0 V to 3.6 V, while its specified operating temperature range extends from -40°C to 105°C. An audio DAC is a converter that transforms digital audio samples into analog voltage signals suitable for headphone amplifiers, line outputs, speakers, and other audio stages. Within the signal-chain hierarchy, the AK4432VT is an audio DAC, a digital-to-analog converter, an interface IC, and ultimately a semiconductor. It sits between a digital audio source and an analog output stage, where accurate conversion and low-noise analog output are central to sound quality. Key features include 32-bit resolution, support for sampling rates up to 192 kHz, 108 dB dynamic range, and two-channel operation. The manufacturer describes the converter as using AKM's VELVET SOUND architecture and a newly developed 32-bit digital filter designed to provide short group delay. Single-ended SCF outputs are intended to improve performance in systems where clock jitter would otherwise degrade conversion quality. The AK4432VT operates from a 3.0 V to 3.6 V supply, covering both its analog and digital operating requirements. The supplied manufacturer information identifies the device as an advanced audio DAC with two channels and I2S data input. Its 16-TSSOP surface-mount package supports compact digital audio products while providing separate digital and analog supply connections for careful PCB partitioning. Typical applications include high-end CD and network audio players, digital music systems, home-theater audio equipment, professional monitoring products, and other stereo DAC designs requiring 192 kHz support. In each case, the AK4432VT converts incoming I2S data into analog signals that can be passed to an output amplifier, analog volume-control stage, or line-level driver. A critical design consideration is maintaining a low-jitter digital clock source and separating analog and digital return paths appropriately. Power and ground routing should follow the manufacturer datasheet's recommended application circuit, while output-stage and filtering choices must preserve the converter's intended signal integrity. Exact pin assignments and external component values must be taken from the manufacturer datasheet rather than inferred from the package outline. This product record combines verified manufacturer specifications, distributor availability, package information, pricing, application guidance, and a drop-in replacement assessment. It distinguishes documented AK4432VT-E2 compatibility from unverified functional alternatives and identifies all unavailable electrical details explicitly instead of estimating them.

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AK4438VN

AK4438VN - 8-Channel 32-Bit 768kHz Audio DAC | Asahi Kasei

The Asahi Kasei Microdevices AK4438VN is an 8-channel, 32-bit audio digital-to-analog converter supporting PCM input rates up to 768 kHz, with a dynamic range of 108 dB, in a 32-pin 5 x 5 mm QFN package with an exposed pad. It accepts I2S digital audio and provides eight single-ended SCF analog outputs, making it suitable for high-resolution multichannel audio systems. An audio DAC is a data-converter IC within the broader digital-to-analog converter, converter IC, signal-conversion, and semiconductor hierarchies. It reconstructs continuous analog audio signals from sampled digital data. The AK4438VN targets applications requiring multiple synchronized output channels, high-resolution playback, and accurate reconstruction of network-audio, USB-DAC, automotive, and home-audio content. Principal features include 32-bit resolution, eight output channels, operation up to 768 kHz, and a 108 dB dynamic range. The newly developed 32-bit digital filter is specified for short group delay, which helps the converter reproduce high-resolution source material with reduced temporal smearing. Single-ended SCF outputs are intended to improve performance in systems where excessive clock jitter would otherwise degrade audio performance. The AK4438VN accepts digital audio through an I2S-compatible interface and converts it into eight analog channels. Its dual-rate architecture supports conventional high-resolution audio while extending operation to 768 kHz PCM input rates. The exposed-pad QFN construction provides a thermal and electrical connection between the device and PCB copper, allowing heat to leave the package more effectively when the converter operates continuously at elevated power. Typical uses include multichannel network-audio receivers, USB-DAC platforms, automotive infotainment systems, home-cinema equipment, digital mixing consoles, and multi-zone listening systems. Its eight outputs reduce the need for multiple discrete single-channel converters when several synchronized analog channels are required. The part can also serve evaluation and prototyping platforms for high-sample-rate PCM playback. Designers must provide stable analog and digital supplies, route return currents carefully, and treat the exposed pad as a thermal and ground connection rather than an unused lead. Clock source quality and layout symmetry are important because converter performance can be degraded by supply noise, ground offsets, or data-line timing errors. Decoupling should follow the manufacturer datasheet recommendations closely. This page consolidates the verified AK4438VN specifications, manufacturer and distributor sources, packaging details, application guidance, and a drop-in-alternative verification record. It also distinguishes verified replacement data from unverified generic cross-reference results, helping engineers avoid assuming that similar converter functions guarantee pin compatibility.

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AK4452VN

AK4452VN - 32-Bit 2ch Premium Audio DAC | AKM

The Asahi Kasei Microdevices AK4452VN is a 32-bit 2-channel premium audio DAC supporting up to 768 kHz PCM and 11.2 MHz DSD input in a 32-QFN 5x5 mm package. It uses AKM's VELVET SOUND architecture with 8-channel digital filter processing and is designed for high-resolution audio sources used in network audio, USB-DAC, and car audio systems. An audio DAC converts digital PCM or DSD streams into an analog voltage suitable for amplification, loudspeakers, headphones, or audio analog-to-digital converters. The AK4452VN belongs to the digital-to-analog converter hierarchy within signal-chain and mixed-signal semiconductor devices. Its premium positioning is intended to preserve fine signal detail while supporting modern high-resolution playback formats. The verified product information identifies a 32-bit resolution, two-channel architecture, 115 dB dynamic-range figure, 768 kHz maximum PCM input rate, 11.2 MHz maximum DSD input rate, and I2S digital audio input. The 32-QFN 5x5 mm package supports compact implementation in premium audio equipment. These features position the device for hi-fi playback, professional monitoring, network streamers, and automotive infotainment systems. The AK4452VN uses eight channels of AKM's VELVET SOUND architecture and 32-bit digital filter processing. The manufacturer describes this combination as an implementation of low-distortion technology intended to improve sound detail and channel consistency. The digital interface supports both high-rate PCM and direct-stream digital sources, allowing one converter to cover conventional CD-rate audio as well as modern high-resolution PCM and DSD material. Typical applications include network audio players, USB-DAC products, car audio systems, premium home-theater equipment, digital mixers, and studio monitoring. In each case, the converter can accept high-resolution digital sources while presenting an analog output to the downstream amplifier or analog signal-chain stage. The component's two-channel organization is especially appropriate for stereo audio rather than multichannel cinema decoding. Designers should evaluate the analog output implementation, supported digital formats, clocking requirements, grounding, and power-supply arrangement against the complete datasheet before layout. The verified data does not specify output topology, reference voltage, supply rails, or detailed decoupling values, so those implementation details must not be inferred from the distributor summary alone. This page consolidates the verified manufacturer and distributor information, distinguishes confirmed capabilities from unavailable specifications, and highlights the need for a complete datasheet review. It also records the absence of verified cross-brand drop-in equivalents instead of presenting functional substitutes as true pin-compatible replacements.

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AK4454VN

AK4454VN - Stereo Audio DAC | Asahi Kasei Microdevices

The AK4454VN from Asahi Kasei Microdevices is a stereo audio digital-to-analog converter in a 32-pin LQFP package. The supplied verification record identifies the exact MPN as AK4454VN, but the associated web-search request timed out before returning a manufacturer datasheet, distributor listing, or parameter table. Consequently, verified electrical values, pricing, package dimensions, and lifecycle details are not presented as confirmed facts on this page. An audio DAC is a mixed-signal semiconductor that converts digital PCM or similar audio data into analog voltage signals suitable for audio amplification, headphone drive, or line-level output. In the signal chain, a DAC follows digital audio processing and precedes an analog output amplifier. Its engineering evaluation therefore includes resolution, supported sampling rates, channel architecture, clock requirements, digital interface format, analog output characteristics, and reconstruction-filter performance. The AK4454VN belongs to the digital-to-analog converter category, which is part of the broader audio and mixed-signal semiconductor hierarchy. A key product-family feature is the AK4454 designation within the Asahi Kasei Microdevices audio portfolio. The VN orderable identifier is associated here with a 32-pin LQFP package, allowing an engineer to begin footprint planning before consulting the final manufacturer documentation. The most important verified feature available in the supplied record is the package class rather than an electrical performance value. The 32-pin LQFP provides a fine-pitch surface-mount footprint and exposes the device's digital, analog, clock, power, and configuration connections through perimeter leads. Because the actual pin names and electrical limits were not returned by the timed-out retrieval, this record does not infer individual pin functions or substitute values from a related device. Typical design roles for a stereo audio DAC include digital-audio playback, compact digital-to-analog conversion, audio source equipment, and conversion ahead of an external amplifier. Whether the AK4454VN is appropriate for a specific design still requires confirmation of its verified sample-rate support, digital input format, master-clock requirements, analog output topology, supply limits, and package dimensions. Before layout or procurement, download the manufacturer datasheet for the exact AK4454VN orderable code and confirm its pinout, recommended decoupling, exposed thermal requirements, soldering profile, operating-temperature limits, and lifecycle status. Designers should also verify clock and ground arrangements against the manufacturer's reference application circuit rather than assuming compatibility with another AK4454-family device. This page transparently separates verified identity and packaging information from unavailable parameters. It also records that the 2026-10-29 price search and drop-in cross-reference search returned no results, preventing unverified specifications, prices, stock claims, and substitute parts from being presented as engineering data.

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AK4456VN

AK4456VN - 32-Bit 6-Channel 768 kHz Audio DAC | AKM

The Asahi Kasei Microdevices AK4456VN is a premium 32-bit, six-channel digital-to-analog converter with support for up to 768 kHz PCM input and 11.2 MHz DSD input, housed in a 48-QFN (7 x 7 mm) package. It uses AKM's VELVET SOUND architecture, combining low-distortion conversion with 32-bit digital filtering for high-resolution audio systems. An audio digital-to-analog converter, or audio DAC, converts digital PCM or DSD data into analog voltage signals suitable for amplification and loudspeaker reproduction. Within the semiconductor hierarchy, an audio DAC is a specialized data-converter IC and a member of the broader ADC/DAC category. It sits at the interface between a digital audio source and an analog signal chain, where its noise, distortion, channel count, and supported input formats materially affect playback quality. The AK4456VN provides six DAC channels, 32-bit resolution, a maximum PCM sampling rate of 768 kHz, and DSD support up to 11.2 MHz. Verified product information identifies a dynamic-range figure of 115 dB and describes the device as a premium multichannel DAC. These capabilities suit component audio equipment, network players, USB DACs, automotive audio systems, and other installations requiring several synchronized high-resolution outputs. Its VELVET SOUND architecture is intended to reduce distortion while preserving fine signal details. The 32-bit digital filtering path supports modern high-resolution source formats, while the six-channel architecture allows one converter to serve multichannel playback without requiring six discrete DAC packages. DSD compatibility broadens format support, although the complete system must also provide compatible source, clocking, filtering, and output-stage circuitry. Typical implementations place the AK4456VN after an audio receiver or digital interface and before balanced or single-ended analog amplifier stages. Because this is a high-performance analog output device, clean grounding, low-noise supplies, controlled clock routing, and symmetrical analog layout are essential. Differential output routing and appropriately shielded connections can help preserve the benefit of the converter's low-distortion architecture. The main design trade-off is that performance depends on system-level implementation rather than the DAC alone. Power, ground, digital-interface isolation, output load, and clock jitter can affect the final audio result. Designers should follow the manufacturer's datasheet for the exact 48-QFN pin assignments, supported digital formats, external-component recommendations, and application circuit. This page consolidates verified manufacturer and distributor information, purchase guidance, practical implementation notes, and a strict compatibility review of potential substitutes. It distinguishes a same-series ordering option from functional alternatives that do not provide a verified pin-to-pin replacement path.

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AK4458VN

AK4458VN - 32-Bit 8-Channel 768kHz DAC | AKM

The Asahi Kasei Microdevices AK4458VN is a premium 32-bit, eight-channel digital-to-analog converter supporting PCM input rates up to 768 kHz and DSD input up to 11.2 MHz. It uses eight output channels, an I2S digital audio interface, and a 48-pin QFN package with an exposed pad. The device also provides 115 dB dynamic range according to the verified manufacturer product data, making it suitable for high-resolution multichannel audio systems. An audio DAC is a mixed-signal integrated circuit that converts digital PCM or DSD audio samples into analog voltage signals suitable for amplifiers and speakers. The AK4458VN belongs to the ADC/DAC hierarchy and combines a digital audio interface, digital signal processing, and eight analog output channels in one device. Its eight-channel architecture supports multichannel playback without requiring eight separate converter packages, while separate analog output stages provide flexibility for balanced or unbalanced signal routing. Key features include 32-bit digital resolution, eight DAC channels, operation up to 768 kHz PCM, and support for 11.2 MHz DSD. The verified manufacturer data identifies AKM's VELVET SOUND architecture as the basis for the converter's low-distortion performance. The digital input supports I2S, and the device is intended for network-audio players, USB-DAC platforms, professional audio equipment, and automotive audio systems. The AK4458VN combines a high-resolution digital processing section with eight analog output channels. This integration reduces the component count and board complexity of an eight-channel design while preserving independent conversion for every output. The 48-QFN package provides a compact implementation, but its exposed thermal pad requires careful PCB layout and adequate copper area for heat dissipation. Typical uses include high-resolution network players, USB audio converters, home-theater receivers, multichannel preamplifiers, automotive infotainment systems, and studio monitoring equipment. In each case, the device can accept high-rate digital audio and generate eight analog channels while reducing the need for duplicated converter circuitry. Designers should pay particular attention to analog and digital grounding, power-supply decoupling, exposed-pad soldering, and the datasheet-recommended output-stage network. The converter's package footprint does not by itself guarantee drop-in compatibility with another DAC: clocking, digital interface, analog topology, control registers, and pin functions must all be verified before substitution. This product summary combines manufacturer specifications, distributor availability, package information, and application-focused engineering guidance to provide more practical procurement and design context than a basic manufacturer datasheet alone.

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AK4462VN

AK4462VN - 32-Bit 2-Channel High-Resolution DAC | AKM

Asahi Kasei Microdevices AK4462VN is a 32-bit, 2-channel premium audio digital-to-analog converter with a 117 dB dynamic range, 768 kHz PCM input capability, DSD512 support, and DoP256 support in a 24-QFN 4 x 4 mm package. The device uses AKM VELVET SOUND technology and is intended for high-resolution audio equipment requiring a combination of wide dynamic range, high sampling-rate support, and compact integration. An audio DAC is a semiconductor that converts digital PCM, DSD, or DoP audio data into continuous analog voltage signals suitable for an audio amplifier and loudspeaker system. Within the broader hierarchy, a DAC is an audio data-converter IC and a member of the ADC/DAC converter category. The AK4462VN specifically occupies the two-channel premium-audio segment, where low-level signal integrity and support for studio-mastering formats are important design considerations. The verified device data identifies a 32-bit architecture, two audio channels, 117 dB dynamic range, a maximum PCM input rate of 768 kHz, DSD512 input, and DoP256 input. Its operating supply range is 1.7 V to 5.5 V. These capabilities make the converter suitable for network audio players, USB DACs, digital audio workstations, premium home-audio systems, automotive audio equipment, and other applications that receive high-resolution digital audio streams. The AK4462 architecture includes AKM VELVET SOUND technology and OSR-Doubler technology. The latter is identified in the manufacturer material as part of the AK4462 implementation. The converter supports substantially higher source rates than a conventional CD-rate audio DAC, but a complete system still requires a matched digital interface, a suitable low-noise analog output network, correct clocking, and an output amplifier whose distortion and noise remain below the DAC’s own output limits. Typical deployment places the AK4462VN downstream of an audio interface that receives PCM or DSD data. The converter then generates left- and right-channel analog outputs for a balanced or unbalanced audio amplifier stage. In a USB DAC, the digital source may originate from a host operating system; in a network player, it may come through a high-resolution streaming transport. In either case, clock jitter, ground return paths, output filtering, and power-supply noise can materially affect the reproduced result. A critical design consideration is that high-resolution capability alone does not guarantee high-fidelity playback. The converter must be paired with an appropriate analog filter, balanced routing where supported by the surrounding circuit, stable reference and clock arrangements, and a power supply whose noise is sufficiently below the output signal. Board layout should preserve the separation between digital inputs and sensitive analog outputs while providing a low-impedance return for each supply domain. This product page consolidates the verified manufacturer and distributor information for the AK4462VN with sourcing details, application guidance, technical limitations, and package information. It distinguishes documented facts from parameters that still require confirmation in the complete manufacturer datasheet, helping engineers evaluate the converter without implying that unsupported pin, clock, output, or compliance details are guaranteed.

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AK4468VN

AK4468VN - 32-Bit 8-Channel DAC | AKM | Premium Audio

Asahi Kasei Microdevices AK4468VN is a premium 32-bit, eight-channel digital-to-analog converter designed for high-resolution audio systems. The device supports PCM input rates up to 768 kHz and DSD input up to DSD512, and is described as a 117 dB premium DAC. It uses VELVET SOUND technology and OSR-Doubler technology, making it suitable for network-audio players, USB DACs, car-audio systems, home-theater equipment, and professional audio products. The AK4468VN is supplied in a 48-QFN 7 mm by 7 mm package with an exposed pad. An eight-channel DAC is a semiconductor that converts eight digital audio streams into eight analog output signals. This class of converter belongs to the broader digital-to-analog converter hierarchy, audio integrated circuits, signal-conversion semiconductors, and broader semiconductor categories. Eight-channel conversion is especially useful in surround-sound receivers, multi-zone audio equipment, automotive sound systems, and USB or network-audio playback products where several synchronized analog channels are required. The AK4468VN provides 32-bit digital audio processing, 768 kHz maximum PCM input, and DSD512 input support as highlighted in the manufacturer documentation. Its eight-channel architecture reduces the need for multiple discrete DAC packages in multichannel equipment. The 117 dB dynamic-range figure identifies it as a premium converter rather than a basic consumer-audio DAC, while VELVET SOUND technology is the manufacturer’s stated approach to sound-quality implementation. OSR-Doubler technology is another stated feature of the AK4468VN. The supplied datasheet description indicates that this technology is adopted in the AK4468 family, although detailed filter characteristics and implementation conditions should be confirmed in the manufacturer datasheet. The 48-VFQFN exposed-pad package supports compact high-channel-count PCB layouts, but the exposed pad requires careful thermal and electrical layout according to the datasheet land pattern and recommended design guidance. The AK4468VN is suitable for network-audio playback, USB DAC platforms, car-audio systems, home-theater receivers, and other multichannel audio products. A design must provide compatible digital audio data, appropriate master-clock and timing signals, analog output filtering, stable analog and digital supplies, and a layout that minimizes noise coupling into sensitive signal paths. The 3 V to 5.5 V supply range listed in the retrieved technical data supports conventional mixed-signal audio-system rails. A critical design consideration is that the exposed thermal pad must be connected according to the datasheet instructions and surrounded by an appropriate ground-plane structure. Differential clock routing, controlled return paths, and separation from switching converters can help preserve the benefit implied by the device’s 117 dB dynamic-range specification. Exact pin names, clock requirements, output modes, filter settings, and recommended external component values must be taken directly from the manufacturer datasheet rather than inferred. This page consolidates the verified manufacturer and distributor information for AK4468VN, including high-resolution audio capabilities, package details, sourcing data, application guidance, and the limitations of the available substitute search. It also distinguishes confirmed drop-in alternatives from merely similar DAC devices so engineers do not mistake a different package or architecture for a PCB-compatible replacement.

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AK4490EQ

AK4490EQ - 32-Bit 768kHz 2-Channel Audio DAC | AKM

The Asahi Kasei Microdevices AK4490EQ is a premium 32-bit, 2-channel audio digital-to-analog converter supporting sampling rates up to 768 kHz and DSD playback in a 48-LQFP (7 mm × 7 mm) package. It provides differential analog outputs, five programmable 32-bit digital filters with group delay as low as 5.3/fs, and a dynamic range of 120 dB according to the manufacturer datasheet. An audio DAC is a signal-conversion integrated circuit that transforms digital PCM or DSD audio data into an analog voltage suitable for amplifiers, preamplifiers, headphones, and powered speakers. Within the broader semiconductor hierarchy, the AK4490EQ is a delta-sigma DAC, an audio data-converter IC, and a member of the power-management-adjacent signal-chain ecosystem. Its dual-channel architecture supports balanced stereo output while preserving very low distortion and wide dynamic range. The AK4490EQ includes the OSR Doubler switched-capacitor filter, allowing operation across a broad range of source signals while reducing out-of-band noise and supporting a low-power design. Its five selectable digital filters provide different combinations of noise shaping, attenuation, and group delay. Differential outputs help reject common-mode noise when implemented with a balanced analog output network. The 768 kHz PCM and DSD capabilities make the device suitable for high-resolution playback systems. Its digital and analog core supply range is 3.0 V to 3.6 V, while the stated analog supply range is 4.75 V to 7.2 V. Separate digital and analog rails reduce the likelihood that converter activity and switching noise will contaminate the analog output stage. Exact performance depends strongly on the external clock, reconstruction-filter implementation, analog supply quality, reference arrangement, PCB grounding, and output-stage design. Typical applications include network music players, USB and I2S audio interfaces, high-resolution headphone DACs, digital preamplifiers, professional studio monitors, and premium home-audio streamers. Its 2-channel architecture suits stereo rather than multichannel surround conversion. Engineers evaluating it for multichannel systems should verify the available channels, digital interface format, clocking requirements, and supported sampling mode against their system requirements. The most important design consideration is the analog supply and output stage. Use low-noise, low-impedance rails, place decoupling capacitors close to the supply pins, keep the analog and digital return currents separated where practical, and follow the manufacturer layout guidance. Because the AK4490EQ is reported as discontinued, new production designs should also evaluate the manufacturer-recommended AK4490REQ transition part after confirming its electrical and pin compatibility. This page consolidates verified distributor availability, the manufacturer datasheet, transition information, and application-specific engineering guidance. It distinguishes verified facts from unspecified parameters and avoids presenting unverified replacement parts as drop-in alternatives.

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AK4493EQ

AK4493EQ - 32-Bit 2-Ch DAC, 768 kHz | Asahi Kasei

The Asahi Kasei Microdevices AK4493EQ is a Premium 32-bit, two-channel digital-to-analog converter with VELVET SOUND technology, support for audio data up to 768 kHz, and a 48-pin LQFP package measuring 7 x 7 mm. The converter is designed for high-fidelity audio equipment that requires low distortion, wide dynamic range, and low out-of-band noise. A digital-to-analog converter, or DAC, converts digital PCM or DSD audio data into an analog voltage that can drive an audio amplifier. In the semiconductor hierarchy, the AK4493EQ is an audio data-converter IC, a specialized form of mixed-signal semiconductor, and ultimately part of a signal-conversion chain that includes an audio source, digital interface, DAC, analog output stage, and loudspeaker or headphone system. Its two-channel architecture supports balanced or appropriately configured single-ended audio-design implementations. Key verified features include 32-bit resolution, two-channel operation, 768 kHz PCM playback support, VELVET SOUND technology, and an OSR Doubler switched-capacitor filter. The OSR Doubler is intended to support a wide range of signal conditions while reducing out-of-band noise. The device also accommodates DSD input, making it relevant to source components that decode high-resolution digital audio streams. The AK4493EQ combines a high-resolution conversion engine with Asahi Kasei Microdevices' VELVET SOUND architecture. Its advertised performance emphasizes low distortion and wide dynamic range rather than merely resolution. At 768 kHz and 32 bits, the device addresses demanding PCM applications, while its DSD capability supports native high-rate DSD audio systems. The exact threshold, digital-interface modes, analog output topology, and operating conditions must be confirmed in the manufacturer datasheet before final circuit design. Typical uses include premium standalone DACs, network music players, digital audio workstations, home-theater audio processors, professional monitoring equipment, and high-resolution headphone amplifiers. The device is most appropriate when the system can preserve the benefit of a 32-bit conversion path from digital transport through the analog output stage. A critical design requirement is preserving analog signal integrity after conversion. Short, symmetrical routing, suitable output-network components, adequate supply decoupling, and grounding that avoids shared high-current return paths can prevent the converter's low-distortion performance from being degraded by the surrounding PCB. This product record combines verified manufacturer and distributor facts with application-oriented engineering guidance, explicitly identifies missing pinout and electrical details, and separates the AK4493EQ from functional upgrades that may use a different package. It therefore supports faster sourcing and design decisions without presenting unverified specifications as manufacturer data.

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AK4528VF

AK4528VF - 24-Bit 96kHz Audio CODEC | AKM | LSSOP-28

The Asahi Kasei Microdevices (AKM) AK4528VF is a high-performance 24-bit stereo audio CODEC designed for 96 kHz recording systems, integrating a single ADC and a single DAC on a single die in a 28-pin LSSOP package. It supports sampling rates up to 96 kHz, delivers 24-bit resolution on a serial audio interface, and features AKM's Enhanced Dual Bit ADC architecture together with the Advanced Multi Bit DAC architecture with switched-capacitor filter (SCF) output stage. The combination provides wide dynamic range on the record path and low out-of-band noise with high jitter tolerance on the playback path, making the AK4528VF a well-known building block for professional audio interfaces, AV receivers, and broadcast equipment. A CODEC (coder-decoder) is an audio mixed-signal IC that converts analog microphone or line-level signals into digital data on the record side and converts stored or streaming digital audio back into analog signals on the playback side. Within the broader signal-chain taxonomy, an audio CODEC sits between the analog front end (microphone pre-amplifier, line driver) and the digital host (DSP, microcontroller, SoC) and is itself a member of the audio converter category alongside standalone ADCs and DACs. Key features of the AK4528VF include the Enhanced Dual Bit ADC for wide dynamic range, the Advanced Multi Bit DAC with SCF output stage, support for 96 kHz operation, a single stereo ADC plus single stereo DAC on one chip, and a serial digital audio interface for connection to standard DSPs, SoCs, and microcontrollers. The integrated SCF output stage removes the need for an external high-frequency post-filter and contributes to the part's high jitter tolerance, a useful trait when the CODEC is fed from a recovered clock in a digital-audio transport. Internally the AK4528VF combines a switched-capacitor ADC front end, a multi-bit delta-sigma modulator, decimation/interpolation filters, and a multi-bit DAC with switched-capacitor low-pass filtering. This architecture trades some analog simplicity for very high in-band linearity and low out-of-band noise, allowing the chip to meet the dynamic-range requirements of professional and prosumer recording at sample rates up to 96 kHz without an external reconstruction filter. Typical applications for the AK4528VF include professional and prosumer recording interfaces, digital mixing desks, broadcast and studio equipment, AV receivers and effects processors, and high-end consumer audio playback. Its combination of 24-bit resolution, 96 kHz support, integrated ADC and DAC, and LSSOP-28 footprint makes it a convenient single-chip front end for systems that previously required a separate ADC plus a separate DAC. When designing with the AK4528VF, pay attention to PCB layout: keep analog inputs and outputs physically separated from the digital interface traces, place the recommended reference-voltage capacitors near the supply pins, and observe the timing requirements in the AKM datasheet for the serial audio interface. Following the AKM reference schematic is the fastest path to achieving the datasheet's dynamic-range and THD+N numbers; a wiring gap between analog and digital grounds or a long trace in the MCLK path will cost measurable performance. This page synthesizes distributor pricing, drop-in and parametric alternatives, application context, and practical design notes for the AK4528VF in a single place, complementing the manufacturer datasheet with engineering guidance not always present on distributor listings.

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AK4621EF

AK4621EF - 24-bit 192kHz Stereo Audio CODEC | Asahi Kasei Microdevices

The Asahi Kasei Microdevices AK4621EF is a high-performance 24-bit stereo audio CODEC supporting up to 192 kHz recording and playback, housed in a 30-pin VSOP (LSSOP) surface-mount package. It integrates two channels of ADC and two channels of DAC on a single die, with 115 dB dynamic range on both ADC and DAC paths and supports sample rates from 8 kHz to 192 kHz. An audio CODEC is a single integrated circuit that combines an analog-to-digital converter (ADC), digital-to-analog converter (DAC), and the necessary clocking, filtering, and serial interface logic to move bidirectional audio between the analog and digital domains. In the broader component taxonomy, the AK4621EF belongs to the audio interface IC family, which sits under interface ICs and ultimately under integrated circuits. It is a sub-category of audio ICs and is specialized for professional and consumer high-fidelity stereo capture and reproduction. Key features include AKM's Enhanced Dual-Bit ADC architecture for high dynamic range and the Advanced Multi-Bit DAC architecture combined with a Switched Capacitor Filter (SCF) that suppresses out-of-band noise and improves jitter tolerance. The serial audio interface is compatible with common I2S, left-justified, and right-justified formats, and the analog supply operates from 4.75 V to 5.25 V while the digital supply operates from 3.0 V to 3.6 V. The device also includes a low-latency digital filter option and a hardware-selectable HPF for DC-offset removal on the ADC path. The architecture combines sigma-delta modulators for both ADC and DAC with on-chip digital decimation and interpolation filters. The SCF output stage of the DAC removes many of the high-frequency images associated with conventional oversampling DACs, reducing the need for aggressive external post-filtering. This combination delivers wide dynamic range with low distortion at full-scale, which is critical for transparent studio capture and playback. Typical applications include Pro Audio sound cards, Digital Audio Workstations (DAWs), DVD-R, hard-disk, and CD-R recording and playback systems, as well as musical instrument recording. The combination of high dynamic range, low latency mode, and integrated PLL makes it suitable for both consumer recording devices and semi-professional production equipment. When designing with this part, observe the separate analog and digital supply domains (5 V analog, 3.3 V digital) and decouple each with appropriate bulk and bypass capacitance. The hardware mode pins configure audio data format, master/slave clocking, and HPF behavior; review them before PCB layout because they cannot be changed in software. This page synthesizes distributor pricing, drop-in and equivalent options, and practical layout guidance beyond what is printed in the manufacturer datasheet.

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AK4621EF-E2

AK4621EF-E2 - 24-bit 192kHz Stereo Audio CODEC | AKM

The Asahi Kasei Microdevices (AKM) AK4621EF-E2 is a high-performance 24-bit stereo audio CODEC supporting up to 192kHz recording and playback in a 30-pin VSOP surface-mount package. It integrates a 2-channel ADC and a 2-channel DAC, with the ADC delivering 115dB dynamic range via AKM's Enhanced Dual-Bit architecture and the DAC delivering 115dB via the Advanced Multi-Bit architecture with Switched Capacitor Filter (SCF). An audio CODEC (Coder-Decoder) is a mixed-signal integrated circuit that converts analog audio signals into digital data for processing, recording, or transmission (ADC) and converts digital audio back into analog signals for playback (DAC). CODECs sit within the broader hierarchy of audio IC -> mixed-signal IC -> data converter IC -> semiconductor, and serve as the central analog I/O block of virtually every professional and consumer audio product with digital connectivity. Key features of the AK4621EF-E2 include 24-bit resolution, 192kHz maximum sample rate, 115dB ADC/DAC dynamic range, low-latency digital filter, hardware controllable via a serial audio interface, and on-chip microphone/line input mixer. The -E2 suffix indicates the tape-and-reel packaging option of the AK4621EF die. The 30-VSOP package provides compact board footprint while exposing all serial audio, control, and supply pins for flexible PCB routing. The Enhanced Dual-Bit ADC and Advanced Multi-Bit DAC architectures deliver wide dynamic range and excellent jitter tolerance, suitable for pro-audio signal chains. Internal digital filtering offers low-latency operation suited to live monitoring applications. The serial audio interface accepts common I2S/left-justified formats, simplifying connection to hardware codecs, DSP engines, and USB/PCIe audio interfaces. Typical applications include Pro Audio sound cards, Digital Audio Workstations (DAW), DVD-R, hard disk, and CD-R recording/playback systems, and musical instrument recording equipment. Designers value this part for its high dynamic range, low latency, and AKM's proven audio architecture. When designing with this device, decouple AVDD and DVDD supplies separately near the IC pins and follow the datasheet's recommended analog-input RC network for optimal THD+N. The -E2 ordering code denotes tape-and-reel shipping, suitable for high-volume assembly. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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AK5355VT

AK5355VT - 16-Bit Low-Power Audio ADC | Asahi Kasei

The Asahi Kasei Microdevices AK5355VT is a low-power, 16-bit serial delta-sigma analog-to-digital converter with an integrated input gain amplifier, designed for digital-audio and microphone-signal conversion. The device operates from a 2.1 V to 3.6 V supply, supports an industrial temperature range of -40°C to +85°C, and is supplied in a surface-mount 16-pin TSSOP package. Its combination of 16-bit conversion resolution, integrated gain amplification, and low-voltage operation makes it suitable for audio front ends handling low-level input signals. An analog-to-digital converter is an integrated circuit that samples an analog voltage and converts it into a digital representation. The AK5355VT belongs to the ADC hierarchy: delta-sigma ADC, serial ADC, audio ADC, data-converter IC, and integrated circuit. In audio systems, this conversion stage turns microphone or line-level analog signals into serial digital data that can be processed by an audio codec, DSP, digital mixer, or digital recording equipment. Key verified characteristics include 16-bit resolution, delta-sigma conversion, a serial output interface, and an integrated input gain amplifier. The integrated amplifier reduces the need for a separate microphone preamplifier when operating with suitably low-level inputs. The 2.1 V to 3.6 V operating range is appropriate for low-voltage portable, consumer-electronics, and embedded audio equipment, while the -40°C to +85°C range supports industrial-temperature operation. The AK5355VT uses a serial digital interface, allowing digitized audio to be transferred through a compact connection rather than a parallel bus. This can reduce wiring and PCB routing requirements, although the host processor must be configured to clock and frame the serial data correctly. Exact sampling rate, input bandwidth, clock requirements, digital-interface voltage, and conversion-performance figures were not included in the supplied verified data and therefore require confirmation from the manufacturer datasheet. Typical uses include digital microphones, microphone-array preamplification, audio-recording modules, portable audio equipment, and industrial sound-capture systems. The integrated gain amplifier is especially relevant when the source signal is weak, while the low-voltage supply range simplifies integration with modern 3.3 V digital systems. Designers should verify input range, programmable gain, clocking, serial-format compatibility, and decoupling requirements before layout release. Input and reference circuitry should be placed for low noise, with short analog routing and controlled return paths. The AK5355VT is appropriate when a 16-bit, low-power, 16-TSSOP audio ADC is required, but a different converter may be preferable when a specific sampling rate, channel count, digital format, or pin-compatible second source is mandatory. This product page consolidates the verified electrical, environmental, package, pricing-reference, and sourcing information for the AK5355VT and distinguishes confirmed specifications from parameters that still require datasheet confirmation. It also provides selection guidance, application context, and an honest assessment of the limited drop-in replacement data available.

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AK5359VT

AK5359VT - 24-Bit 192kHz Stereo ADC | Asahi Kasei Microdevices

The Asahi Kasei Microdevices (AKM) AK5359VT is a 24-bit stereo delta-sigma analog-to-digital converter (ADC) supporting a wide sampling rate range of 8 kHz to 216 kHz, packaged in a TSSOP-16 surface-mount form factor. It is designed for consumer-to-professional audio systems that require high accuracy at low cost, achieved through AKM's Enhanced dual-bit delta-sigma architecture. The AK5359VT integrates the analog input buffers and reference circuits on-chip, so no external components are required for the analog front end. A delta-sigma ADC is a type of analog-to-digital converter that uses oversampling and noise shaping to achieve high resolution (24-bit in this case) at moderate bandwidth. Delta-sigma converters sit within the broader taxonomy of audio ADCs, which belong to the data acquisition IC family, which in turn is a subcategory of integrated circuits. The AK5359VT's wide sampling rate (8 kHz to 216 kHz) places it in the lineage of multi-rate audio ADCs suitable for both telephony-grade and high-resolution music applications. Key features of the AK5359VT include its 24-bit resolution, support for sampling rates up to 216 kHz, a stereo (2-channel) input configuration, master/slave mode operation, a built-in high-pass filter (HPF) for DC offset removal, and programmable serial audio interface modes. Operating mode selection for MCLK frequency, SCLK frequency, HPF on/off, and master/slave is performed via the CKS2-CKS0 hardware pins, simplifying system integration without software configuration. The Enhanced dual-bit delta-sigma modulator architecture minimizes multi-bit quantization noise and improves dynamic range. The digital decimation filter is integrated on-chip, producing a standard audio serial output at selectable formats. Together the on-chip analog and digital blocks eliminate the need for external anti-aliasing filters or external references, reducing BOM and PCB area. Typical applications for the AK5359VT include professional audio interfaces, AV receivers, digital mixers, USB audio DAC/ADC combo front-ends, broadcast equipment, and high-end consumer audio products requiring high-resolution stereo capture. The 216 kHz maximum sampling rate also makes it compatible with 192 kHz studio recording and Blu-ray / DVD-Audio formats. When designing with the AK5359VT, place decoupling capacitors close to the AVDD and DVDD pins and route the analog and digital grounds as separate nets joined at a star ground near the device. The HPF should be enabled when interfacing to single-supply analog sources with DC bias, and disabled when the source is already AC-coupled. This page synthesizes distributor pricing, drop-in alternatives, design notes, and pinout guidance not found on the manufacturer datasheet alone.

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AK5394AVS

AK5394AVS - 24-bit 192kHz 123dB ADC | AKM (Asahi Kasei)

The AKM (Asahi Kasei Microdevices) AK5394AVS is a 24-bit, 192 kHz sampling, 2-channel A/D converter for professional digital audio systems, delivered in a 28-pin SOP (28-SOP, 0.295"/7.50 mm width) package with a digital supply range of 3 V to 5.25 V and analog supply of 4.75 V to 5.25 V. Headline parameters are 123 dB dynamic range, 192 kHz maximum sampling rate, and 24-bit resolution through an advanced multi-bit delta-sigma modulator. An ADC (analog-to-digital converter) is a mixed-signal integrated circuit that samples continuous analog voltages and converts them to discrete digital codes at a defined sampling rate; the AK5394AVS is a special-purpose audio ADC that sits in the data acquisition -> ADC/DAC -> ADC -> delta-sigma audio ADC hierarchy, optimized for high-fidelity stereo recording. Key differentiating features include 123 dB dynamic range (broadband A-weighted), a switched-capacitor multi-bit delta-sigma architecture that lowers quantization noise and idle tones versus single-bit designs, a digital high-pass filter with offset calibration, and a peak THD+N of approximately -105 dB at 1 kHz. The part supports master/slave clock modes for synchronizing to professional AES/EBU or word-clock environments. The AK5394AVS uses an advanced multi-bit modulator with data scrambling to suppress idle-channel noise and improve linearity, combined with a 4th-order post-modulator digital decimation filter. This topology enables the device to be marketed at the time as the industry's highest-performance stereo ADC, aimed at studio mastering, A/D converters for digital mixers, and broadcast equipment. Typical applications include professional studio A/D converters, mastering recorders, digital mixing consoles, high-end audiophile ADC front-ends, and broadcast PCM signal acquisition. The wide sampling-rate range (1 kHz to 216 kHz) also makes the part usable for low-rate instrumentation sampling. When designing with the AK5394AVS, note that the part is listed as Obsolete by AKM; the AK5392/3 are semi-pin-compatible alternatives that can simplify retrofit designs but are not guaranteed drop-in. PCB layout should keep analog and digital grounds separated at the device and join only at the supply decoupling return. This page synthesizes distributor pricing, drop-in alternative guidance, and practical design notes not found in the manufacturer datasheet alone, helping engineers sourcing this obsolete part or planning a redesign path.

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AK5483

AK5483 - 10-Bit 20 MSPS 3-Channel ADC | AKM Semiconductor

Asahi Kasei Microdevices/AKM Semiconductor AK5483 is a 10-bit, 20 MSPS maximum, three-channel CMOS analog-to-digital converter in an LFQFP package. It accepts single-ended 1 Vpp analog input and converts each channel to straight-binary digital data. The converter combines three high-performance ADCs, full-pipeline conversion, simultaneous-channel integration, and compact high-speed sampling in one device. An ADC is an analog-to-digital converter, a semiconductor that samples continuous voltage signals and produces corresponding digital codes for processing, storage, transmission, or control. Within the broader hierarchy of data-converter ICs, the AK5483 is a flash-sampling ADC suitable for multichannel systems requiring compact conversion and modest digital resolution. Its 10-bit output and 20 MSPS maximum rate make it relevant to video, imaging, instrumentation, communications, and embedded signal-processing systems. The primary verified features include a 10-bit conversion resolution, a maximum sampling rate of 20 MSPS, three integrated ADC channels, single-ended analog inputs, and a 1 Vpp input range. The parallel straight-binary output simplifies connection to digital logic when the host device can accept the converter's data interface directly. Integrating three channels also reduces the need for separate converter packages when synchronized or closely timed measurements are required. The AK5483 uses a full-pipeline ADC architecture. This architecture separates conversion into internal stages, supporting higher operating speed than a basic single-stage flash approach while retaining a 10-bit straight-binary result. The manufacturer documentation also identifies the device as a CMOS converter, which is important when evaluating digital interface timing, power behavior, and integration with mixed-signal systems. Typical engineering uses include multichannel video digitization, sensor signal capture, communications receivers, industrial measurement systems, and embedded control platforms. The three-channel architecture is particularly useful when several analog signals must be converted within the same system, while the 20 MSPS maximum rate supports streaming workloads that exceed low-speed sensor-sampling requirements. The exact sampling rate, timing, and input bandwidth available in a finished design should be checked against the operating conditions in the manufacturer datasheet. Designers should treat the analog input range, reference requirements, clocking, digital output timing, supply sequencing, and package footprint as the principal integration constraints. Input conditioning must present a compliant 1 Vpp signal to each channel, and PCB layout should minimize noise coupling around the analog inputs and high-speed digital outputs. The AK5483 datasheet should be consulted for pin assignments, recommended application circuits, timing margins, and electrical limits. This page consolidates verified manufacturer-linked specifications, distributor availability references, packaging information, application guidance, and replacement limitations for engineers evaluating the AK5483. It also separates confirmed facts from parameters that require datasheet confirmation rather than estimating missing values.

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AK5534VN

AK5534VN - 32-Bit 4-Ch 768kHz Audio ADC | AKM

The Asahi Kasei Microdevices AK5534VN is a 32-bit, 768kHz-sampling, four-channel differential audio A/D converter in a 48-QFN (7x7) package. It supports digital audio systems requiring high-resolution PCM conversion and DSD output up to 11.2MHz. The manufacturer identifies the device as suitable for mixers, multi-channel recorders, and automotive amplifier units, while its 111dB dynamic-range rating positions it for high-fidelity capture and professional audio conversion. An audio A/D converter is an analog-to-digital converter optimized for audio signals rather than general-purpose measurement. It converts differential left- and right-channel analog voltages into high-resolution digital samples for processing by a DSP, audio codec, transmitter, or recorder. Within the broader product hierarchy, the AK5534VN is an ADC, then a data-converter IC, then an interface IC used in electronic systems. Its four integrated channels reduce the need for separate converters in multichannel equipment. The AK5534VN combines four differential ADC channels with 32-bit resolution and a maximum sampling rate of 768kHz. Four types of integrated digital filters can be selected according to the required sound-quality balance. TDM audio-format support provides a direct interface to digital signal processors, while DSD output support up to 11.2MHz broadens its applicability to high-resolution digital-audio systems. These features matter where low quantization noise and flexible filtering are more important than a low-power, low-cost general-purpose converter. The converter's 111dB dynamic range supports high-fidelity capture by providing a broad measurable signal range relative to the noise floor. Differential inputs help reject common-mode noise when the analog front end is properly implemented. The 48-QFN (7x7) package supports compact multichannel layouts, although its exposed thermal and ground features require careful PCB construction. Exact power, voltage, clock, and interface details should be confirmed in the manufacturer datasheet before final schematic or layout release. Typical uses include professional and multichannel recorders, digital mixing consoles, automotive amplifier and head-unit systems, studio preamplifiers, multichannel measurement equipment, and DSD-capable audio interfaces. In these systems, the AK5534VN performs the conversion from analog audio into PCM or DSD data and then transfers the result to a DSP through supported serial formats. Its four-channel architecture is particularly useful where several synchronized inputs must be captured without using four separate converter packages. Designers should prioritize clean analog grounding, low-noise reference and clock routing, and correct implementation of the differential input network. Digital communication lines to the DSP must be length-controlled and kept away from the analog inputs. Because the verified excerpts do not provide the complete electrical limits or pin names, power-supply selection, decoupling, exposed-pad layout, and interface voltage levels must be taken directly from the AKM datasheet rather than inferred from similar converters. This page consolidates verified manufacturer and distributor information for the AK5534VN, identifies its core high-resolution audio features, documents sourcing and commercial availability, and provides practical application guidance. It also distinguishes true same-package drop-in candidates from broader functional audio-ADC alternatives, helping engineers make a defensible design choice before committing a PCB layout.

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AK5538VN

AK5538VN - 32-Bit 768kHz 8-Channel Audio ADC | AKM

Asahi Kasei Microdevices AK5538VN is a 32-bit, 768 kHz sampling, eight-channel differential audio A/D converter in a 64-QFN (9 x 9 mm) package. It delivers 111 dB dynamic range, 103 dB S/(N+D), selectable digital filters, TDM-compatible digital audio interfaces, and DSD output support up to 11.2 MHz. The device is designed for professional mixers, multichannel recorders, and other digital audio systems requiring simultaneous high-resolution conversion across eight channels. An audio A/D converter is a specialized data-conversion IC that transforms analog audio signals into high-resolution digital words for processing by a DSP, codec, transmitter, or storage system. Within the semiconductor hierarchy, the AK5538VN belongs to the ADC/DAC class, specifically the delta-sigma audio ADC category. Its differential inputs are suited to balanced analog audio paths, while the digital interface transports converted PCM data to the downstream audio processor. Key features include eight differential input channels, 32-bit conversion, a maximum sampling rate of 768 kHz, 111 dB dynamic range, and 103 dB S/(N+D). Four integrated digital-filter types can be selected according to the preferred sound-quality response. The converter also supports TDM audio formats for straightforward connection to a DSP and provides DSD output capability up to 11.2 MHz. Channel summation can improve the stated dynamic range to 114 dB when operating in an eight-to-two-channel summation configuration. The AK5538VN combines high channel count with low power consumption, making it useful in professional audio equipment where multiple converted channels must share a compact circuit area. Differential analog routing can reduce susceptibility to common-mode noise when implemented with a properly designed front end. The 64-QFN package also requires careful exposed-pad thermal management and short, symmetrical analog routing. Typical uses include digital mixing consoles, multichannel studio recorders, multichannel DAC input stages, sampling systems, and high-end digital audio interfaces. The AK5538VN is particularly appropriate when a design needs more than two simultaneous high-resolution audio channels and requires direct DSP connectivity. A critical design consideration is the relationship among analog input scaling, clocking, digital filtering, and the downstream DSP interface. The datasheet should be consulted for the complete pinout, supported clock configurations, input ranges, reference requirements, decoupling values, and exposed-pad layout. This page consolidates the verified manufacturer and distributor information, technical application guidance, and drop-in replacement status for the AK5538VN. It distinguishes documented performance from unspecified details so procurement and engineering decisions can be made without treating unavailable electrical data as confirmed.

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AK5552VN

AK5552VN - 32-Bit 768kHz Stereo Audio ADC | AKM

The Asahi Kasei Microdevices AK5552VN is a 32-bit, 768 kHz sampling, differential-input audio A/D converter with two channels, 115 dB dynamic range, and 106 dB S/(N+D), housed in a 48-QFN 7 x 7 mm package. It is designed for professional digital audio systems requiring high-resolution, high-speed conversion, including mixers and multi-channel recorders. An audio ADC is a specialized data-converter IC that converts analog audio signals into digital PCM or DSD data. In the broader semiconductor hierarchy, the AK5552VN belongs to the analog-to-digital converter class, supports digital audio applications, and operates as a signal-chain device between analog preamplification and digital audio processing. Its differential inputs help reject common-mode noise while preserving low-level audio information. Key features include 32-bit conversion, a maximum sampling rate of 768 kHz, two differential input channels, and four selectable digital filters. According to the manufacturer product page, the converter achieves 115 dB dynamic range and 106 dB signal-to-noise-plus-distortion while maintaining low power-consumption performance. These characteristics target high-resolution recording and mixing systems rather than general-purpose low-cost conversion. The AK555x family uses configurable digital filtering to accommodate different sound-source requirements. The verified manufacturer description states that four filter types are integrated and selectable according to the source. Differential input architecture also allows balanced analog connections, which can reduce susceptibility to ground-potential differences and interference when paired with suitable front-end circuitry. Typical uses include professional mixers, multi-channel recorders, digital audio workstations, high-resolution capture equipment, and digital recording systems. At 768 kHz sampling, the converter can support high-resolution PCM workflows and DSD-compatible audio architectures identified in distributor product listings. Designers should treat the ADC as a high-performance analog signal-chain component rather than a generic data converter. Input gain, common-mode voltage, clocking, digital interface configuration, filter selection, grounding, and decoupling all influence achievable performance. The manufacturer datasheet should be used to verify complete pin assignments, supported output modes, supply requirements, and application-specific layouts. This page combines verified manufacturer and distributor information with practical sourcing, application, and comparison guidance. It also distinguishes confirmed drop-in substitutes from devices that merely share the broad audio-ADC category, preventing a functional alternative from being mistaken for a PCB-compatible replacement.

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AK5554VN

AK5554VN - 32-Bit 768 kHz 4-Channel Audio ADC | AKM

The Asahi Kasei Microdevices AK5554VN is a 32-bit, 768 kHz sampling, 4-channel differential audio A/D converter for professional digital audio systems, supplied in a 48-pin QFN (7 mm × 7 mm) package. It achieves 115 dB dynamic range and 106 dB S/(N+D) while maintaining low-power operation. An audio ADC is a specialized data-converter IC that converts analog left- and right-channel audio signals into digital PCM or DSD data. It belongs to the ADC and DAC category within interface and signal-conversion ICs, where precision, noise performance, channel count, sampling rate, clocking, and digital-output compatibility determine suitability for recording, mixing, and playback equipment. The AK5554VN supports up to 768 kHz sampling and four differential input channels. Its four-channel architecture suits multichannel recording systems, mixers, and digital recording consoles. Four selectable digital filters allow the conversion characteristics to be matched to different sound-quality priorities. The device also supports TDM audio formats for connection to a digital signal processor. DSD output support extends to 11.2 MHz, providing a direct path for high-resolution digital audio workflows. Combined with the 32-bit conversion capability, 115 dB dynamic range, and 106 dB S/(N+D), the converter preserves fine amplitude and signal-to-noise information during capture. Its multi-channel and filter architecture reduces the need for parallel single-channel converters when designing professional audio equipment. Typical applications include digital mixers, multichannel recorders, professional audio interfaces, broadcast equipment, and high-resolution studio capture systems. The AK5554VN is particularly relevant when a design requires both PCM operation and DSD output, or when differential analog inputs must feed a DSP through a TDM-compatible digital interface. Designers should verify the external clock, analog input scaling, filtering, power-supply sequencing, and digital-interface voltage requirements against the manufacturer datasheet before layout. Differential routing, grounding, exposed-pad thermal management, and connector isolation are critical to preserving the advertised dynamic-range and S/(N+D) performance. This page consolidates the verified manufacturer and distributor information for the AK5554VN, adds application-specific engineering guidance, identifies data that still requires datasheet confirmation, and avoids presenting unverified substitute parts as drop-in replacements.

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