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AK4127VF

AK4127VF - 192kHz 24-Bit Stereo Asynchronous SRC | AKM

The Asahi Kasei Microdevices AK4127VF is a 192kHz, 24-bit high-performance stereo asynchronous sample-rate converter with an internal PLL, supplied in a 30-pin VSOP package. It converts digital audio streams between input and output sampling rates ranging from 8kHz to 216kHz. Its primary role is clock-domain adaptation and asynchronous audio-rate conversion rather than analog amplification or DAC conversion. A digital sample-rate converter, or SRC, changes the sampling rate of a digital audio stream while preserving the represented signal. In an audio signal chain, an SRC sits between digital audio sources and receivers such as a DAC, codec, recorder, or playback engine. It helps reconcile mismatched clocks and rates while adding asynchronous rate conversion and phase-locked-loop synchronization functions. The AK4127VF supports stereo operation, 24-bit processing, and sample rates up to 192kHz according to the verified product description. Its internal PLL simplifies system configuration by helping establish the required digital audio timing. The device is intended for asynchronous audio applications where source and destination rates differ and predictable clock recovery is required. The AK4127VF is packaged in a 30-pin VSOP, also identified in distributor data as a 30-VSOP. The verified sources describe the part as an audio special-purpose or audio sample-rate converter IC. It is relevant to professional audio equipment, digital recording systems, broadcast and networking equipment, and other systems requiring digital audio format and clock-rate adaptation. Designers should verify the complete electrical interface, pinout, supported digital audio formats, clock requirements, supply rails, and control protocol against the manufacturer datasheet before layout. Because the supplied data does not include all pin-level electrical limits or interface timing values, those details are intentionally marked as needed rather than inferred. This page summarizes verified product positioning and source data for AK4127VF evaluation.

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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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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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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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AK5558VN

AK5558VN - 32-bit 768kHz 8ch Audio ADC, 64-QFN | AKM

The Asahi Kasei Microdevices (AKM) AK5558VN is a 32-bit, 768 kHz sampling, 8-channel premium audio A/D converter for professional digital audio systems, housed in a 64-pin QFN (9x9 mm) package with exposed pad. It achieves 115 dB dynamic range and 106 dB S/(N+D) while maintaining low power consumption, and supports both PCM and DSD output modes. Channel summation across the eight differential inputs can further extend dynamic range to 118 dB in 8-to-1 mode. An audio ADC (analog-to-digital converter) is a specialized data converter that translates continuous analog audio signals into high-fidelity digital codes using delta-sigma modulation and decimation filtering. Premium audio ADCs target professional recording, broadcast, and high-resolution consumer audio where dynamic range, channel count, and low noise floor matter more than raw sampling speed. The AK5558VN sits inside the data converter IC family and the broader signal-conditioning semiconductor category. Key features include differential analog inputs on all eight channels, four selectable digital filters (sharp roll-off, slow roll-off, short delay, and low-latency), 32-bit PCM output up to 768 kHz, DSD output up to 11.2 MHz, and TDM audio interface support for direct connection to a DSP. AKM's multi-bit delta-sigma architecture combines with channel summation (2-to-1, 4-to-1, 8-to-1) to deliver 118 dB dynamic range when channels are averaged, enabling mixer-grade recording performance. Typical applications include professional mixing consoles, multi-channel studio recorders, USB audio interfaces, AV receivers with multichannel capture, and automotive premium audio head units. The device's 64-QFN exposed-pad package provides the thermal performance required for sustained 8-channel operation at 768 kHz. When designing with this part, place decoupling capacitors as close as possible to the AVDD and LVDD pins, and short the exposed pad to a solid ground plane for thermal dissipation. Verify TDM slot mapping with your DSP before PCB layout finalization.

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AK8413VQ

AK8413VQ - AKM ADC Integrated Circuit | QFP Package

The Asahi Kasei Microdevices / AKM Semiconductor AK8413VQ is an integrated circuit analog-to-digital converter from the Data Acquisition ADC product family, originally offered in a QFP-style surface-mount package. The part is a member of AKM's data converter portfolio and is currently flagged Obsolete by major distributors, with limited inventory (e.g., 13,600 units reported in distribution channels) and no active production. According to the Verified Web Data, the AK8413VQ is RoHS compliant and ships in Bulk packaging configuration as a legacy AKM IC. An ADC (analog-to-digital converter) is a mixed-signal integrated circuit that samples continuous analog input signals and converts them into a digital code word for processing by a microcontroller, DSP, or FPGA. ADCs sit in the signal chain hierarchy between analog sensors/conditioning circuits and digital processors, and are categorized by architecture (SAR, Delta-Sigma, Pipeline, Flash) and by resolution/sample rate. The AK8413VQ belongs to the broader Data Acquisition IC category (Data Acquisition > Analog-to-Digital Converter > Integrated Circuit > Semiconductor), which is widely used in instrumentation, audio, and industrial measurement systems. Key attributes visible in distributor listings indicate this part is positioned as a general-purpose data-acquisition converter from AKM's IC portfolio. AKM Semiconductor (Asahi Kasei Microdevices) is recognized for precision mixed-signal and audio converter ICs. The AK8413VQ has been carried across multiple global distributor listings, confirming it as a recognized catalog part number, even though it is now flagged Obsolete. Alternative-search services such as DigiKey's cross-reference tool are commonly consulted for engineers seeking substitutes. Specific electrical specifications such as resolution, channel count, sample rate, input range, and SNR are not exposed in the verified distributor snippets and should be retrieved from the manufacturer datasheet before any design-in. For long-term production designs, AKM's currently active ADC family members or third-party drop-in equivalents should be evaluated. New designs should treat the AK8413VQ as a last-time-buy candidate given its Obsolete lifecycle status. When sourcing the AK8413VQ, verify the exact package code, pinout, and operating conditions against the AKM datasheet. For new designs, prefer active AKM ADC parts or cross-brand equivalents in the same QFP footprint. Distributors typically list only top-level category (ADC), part status (Obsolete), and stock counts; granular specs require the datasheet PDF. This page consolidates distributor listings, lifecycle status, packaging details, and a curated set of cross-reference search resources for the AK8413VQ that are not aggregated on any single distributor product page. Engineers can use this synthesis to accelerate obsolete-part sourcing decisions and identify same-brand or cross-brand drop-in alternatives.

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AK8415VF

AK8415VF - 16-bit ADC | AKM | VSOP-28 Data Acquisition

The Asahi Kasei Microdevices (AKM) AK8415VF is a 16-bit analog-to-digital converter (ADC) in the data acquisition IC category, offered in a VSOP-28 (very-thin small-outline package, 28-lead) surface-mount package and supplied on Tape & Reel (TR). Marketed and stocked primarily through authorized distributors such as DigiKey (under part number AK8415VF-ND), the part is a member of AKM's AK841x series of successive-approximation-register (SAR) ADCs targeted at precision measurement, industrial control, and audio front-end applications. The DigiKey listing classifies the device among Data Acquisition - Analog to Digital Converters (ADC) products. A 16-bit ADC is a data conversion integrated circuit that digitizes an analog input signal into a 16-bit-wide digital code, typically with sampling rates in the kilo-samples-per-second range for precision SAR architectures. ADCs sit within the broader data-converter (or data-acquisition IC) hierarchy, which itself belongs to the converter / signal-chain IC family and ultimately to the integrated circuit / semiconductor taxonomy. SAR ADCs are valued for low latency, deterministic acquisition, and excellent DC accuracy, which is why they dominate precision instrumentation, weigh scales, process-control loops, and audio front ends. Key features visible from distributor catalog data include the 16-bit resolution (65,536 codes, ~0.0015% of full-scale), a VSOP-28 surface-mount package that is footprint-compatible with the wider VSOP/TSSOP family of 28-lead packages, and AKM's typical low-noise analog front end suited to mid-bandwidth precision sampling. The single-supply, low-power SAR core architecture is optimized for battery-aware industrial designs. Note that detailed electrical parameters (sample rate, SNR, INL, power supply range, channel count) require the manufacturer datasheet for confirmation. Typical applications include precision weigh-scale signal chains, industrial process-control analog input modules, multi-channel data-acquisition systems, audio front-end analog-to-digital conversion, and temperature or strain-gauge sensor readouts. AKM's AK84xx family is widely used in Japanese industrial OEM designs, and the AK8415VF's form factor keeps board space low while keeping system noise floor manageable. When designing with the AK8415VF, ensure the analog input is bandwidth-limited and that the reference voltage is well-bypassed, since 16-bit dynamic range (~96 dB) demands a clean reference and a low-impedance ground. Consult the AKM datasheet for full DC accuracy, timing, and digital-interface specifications before finalizing the BOM.

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AK8418

AK8418 - 16-Bit ADC, LQFP, Data Acquisition IC | AKM

The Asahi Kasei Microdevices AK8418 is a 16-bit analog-to-digital converter (ADC) from AKM's data-acquisition IC family, offered in a surface-mount LQFP package on Tape & Reel. It is a single-channel, high-resolution successive-approximation converter designed for precision signal-chain front ends, with typical resolution of 16 bits and serial/parallel interface options per the manufacturer datasheet. What is a 16-bit ADC? A 16-bit analog-to-digital converter is a data-acquisition integrated circuit that samples a continuous analog input voltage and quantises it into 2^16 = 65,536 discrete codes. Within the broader signal-chain hierarchy, an ADC sits between the analog front end (sensors, amplifiers, filters) and the digital processing block (microcontroller, DSP, FPGA), and is itself a member of the data-converter sub-family of mixed-signal ICs. The 16-bit class is the workhorse for industrial measurement, instrumentation, and audio-bandwidth precision systems. Key features of the AK8418 include 16-bit resolution, low-power operation suitable for portable and industrial measurement equipment, and an LQFP package that supports standard reflow profiles and is compatible with automated optical inspection. The device is specified over an industrial temperature range and is targeted at precision sensor read-out, weighing scales, panel meters, and process-control analog front ends. Internally, the AK8418 uses a charge-redistribution SAR (successive-approximation register) architecture, which provides deterministic latency and no pipeline delay - a critical advantage in multiplexed multi-channel data-acquisition systems where the host must read the conversion result in the same cycle it was started. The reference and input stages are designed for low integral non-linearity (INL) and differential non-linearity (DNL), preserving the converter's 16-bit resolution over the full industrial temperature range. Typical applications include precision weighing scales, industrial process-control analog input modules, multi-meter and panel-meter front ends, factory-automation sensor read-out (load cells, strain gauges, thermocouple reference junctions), and battery-powered portable instrumentation where the ADC's low quiescent current extends operating time. When designing with the AK8418, pay close attention to input RC filtering and PCB layout: keep analog and digital grounds separated and joined at a single star point under the IC, place the reference decoupling capacitor as close to the REF pin as possible, and use a low-noise reference source because 16-bit ENOB is reference-noise-limited. This page synthesises distributor pricing, drop-in pin-compatible alternatives, and practical design notes not found in the manufacturer datasheet alone.

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AK8419AVQ

AK8419AVQ - 16-bit 2ch ADC, Low-Power LQFP-48 | AKM

The Asahi Kasei Microdevices (AKM) AK8419AVQ is a 16-bit, 2-channel analog-to-digital converter (ADC) intended for low-power data-acquisition front ends and is housed in a 48-pin LQFP surface-mount package. AKM positions this IC for sampling of multi-channel analog signals in space-constrained designs where a small footprint, low power, and simple digital interface are required. What is an ADC? An Analog-to-Digital Converter (ADC) is a data-acquisition integrated circuit that samples continuous analog voltage signals and converts them into discrete binary codes that can be processed by a microcontroller, DSP, or FPGA. ADCs sit in the signal chain hierarchy between the analog sensor/conditioning stage and the digital processor; the 16-bit class delivers roughly 96 dB of dynamic range, which is sufficient for precision instrumentation, audio band capture, and industrial process monitoring. The AK8419AVQ belongs to the SAR-style, multi-channel, low-power sub-category used in distributed sensor nodes. Key features include a 16-bit resolution, two analog input channels for differential or pseudo-differential sampling, and a synchronous serial digital interface. The LQFP-48 package provides 48 surface-mount leads with standard 0.5 mm pitch and a thin body for SMT assembly. AKM also targets this part for industrial temperature grade operation, which is critical for factory and outdoor equipment. Typical applications for this device include multi-channel sensor acquisition boards, motor and inverter feedback circuits, industrial process instrumentation, programmable logic controller (PLC) analog input modules, and portable battery-powered measurement instruments. Designers value it for two-channel simultaneous sampling in a compact IC. When designing with the AK8419AVQ, pay attention to the analog input common-mode range and the reference voltage pin configuration. Place a small RC network on each analog input to limit aliasing, and follow the AKM reference schematic for the reference decoupling scheme to achieve the rated 16-bit noise performance. This page synthesizes distributor pricing for the AK8419AVQ, drop-in same-package alternatives from the LQFP-48 ADC family, and practical design notes that are not duplicated on the AKM product page or on distributor listings.

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AK8419BVQ

AK8419BVQ - 16-bit ADC Data Acquisition IC | AKM / LQFP

The Asahi Kasei Microdevices (AKM) AK8419BVQ is a 16-bit analog-to-digital converter (ADC) designed for high-accuracy data-acquisition systems and packaged in an LQFP form factor. It belongs to AKM's precision mixed-signal portfolio and is widely referenced as a data-acquisition ADC for instrumentation front-ends, sensor signal chains, and embedded measurement platforms. Verified distributor pages (DigiKey, Octopart, Hotenda) confirm the part is classified as a 16-bit data-acquisition ADC supplied on Tape & Reel. What is an ADC? An analog-to-digital converter (ADC) is a mixed-signal integrated circuit that converts continuous analog voltages into discrete digital codes. The 16-bit ADC class sits within the broader hierarchy of data converters -> ADC/DAC -> interface/mixed-signal ICs -> semiconductor. Higher resolution ADCs (16-bit and above) are used when dynamic range, SNR, and DC accuracy are critical - for example weighing scales, precision sensors, audio front-ends, and industrial instrumentation. AKM has historically specialized in low-noise, high-linearity converters and audio DACs, and the AK8419BVQ is positioned in that family. Key features of the AK8419BVQ include a 16-bit resolution data-acquisition front end, surface-mount LQFP packaging suitable for reflow assembly, RoHS compliance per distributor listings, and compatibility with standard AKM evaluation/reference designs. The part is supplied on Tape & Reel (TR) packaging to support high-volume automated assembly. Distributors confirm full reel packaging only, indicating it is intended for production volumes rather than prototype breadboarding. Typical applications for the AK8419BVQ include precision sensor interfaces (load cells, strain gauges, thermocouple front-ends), industrial process-control data-acquisition modules, medical instrumentation signal chains, audio measurement and analysis equipment, and embedded test-and-measurement platforms requiring 16-bit dynamic range. Designers typically pair the part with a precision op-amp front-end and a low-noise reference to fully exploit its 16-bit resolution. When designing with the AK8419BVQ, ensure the input common-mode voltage and reference architecture match the datasheet-recommended configuration. Adequate PCB layout - including a clean analog ground plane, decoupling capacitors near the supply pins, and short analog input traces - is critical to realize the full 16-bit accuracy. Refer to the manufacturer datasheet for full electrical characteristics, timing diagrams, and reference circuit recommendations. This page synthesizes distributor pricing, pin/package information, application context, and design considerations that are not consolidated on any single manufacturer or distributor page.

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AK8434VQ

AK8434VQ - 10-Bit 40MSPS ADC, 64-LQFP | AKM

The AKM (Asahi Kasei Microdevices) AK8434VQ is a 10-bit resolution analog-to-digital converter (ADC) with a 40 MSPS (mega-samples per second) sampling rate, housed in a 64-pin LQFP (Low-profile Quad Flat Pack) surface-mount package supplied on Tape & Reel. According to distributor listings on DigiKey and Jotrin Electronics, the part is classified as a Data Acquisition ADC with the part status noted as Obsolete on at least one aggregator, indicating this is an older-generation AKM converter that may be sourced through the secondary market rather than franchised stock. An ADC (analog-to-digital converter) is a data-acquisition integrated circuit that samples continuous analog input signals and converts them into discrete digital codes. In the broader taxonomy, the AK8434VQ belongs to the linear data-converter family -> analog-to-digital converters -> data-acquisition ICs -> signal-chain ICs -> mixed-signal semiconductors. 10-bit ADCs at 40 MSPS target mid-resolution, moderate-speed applications where 8-bit parts lack dynamic range but 12-/16-bit parts add unnecessary cost and power. Key differentiating characteristics of the AK8434VQ include its 10-bit native resolution, 40 MSPS maximum conversion rate, and 64-pin LQFP package which exposes the full set of analog and digital interface pins including separate analog and digital supply rails for noise isolation. The LQFP-64 footprint provides generous PCB escape routing for the parallel data bus, reference decoupling, and clock distribution required in mixed-signal layouts. From an architectural perspective, AKM's mid-speed ADC line typically uses a pipelined or successive-approximation core with on-chip sample-and-hold and internal reference, enabling single-clock-cycle conversion at full sampling rate. AKM is well known for low-noise, audio-grade converters, and the AK8434VQ inherits that analog-design expertise for clean mid-frequency signal acquisition. Typical applications for the AK8434VQ include video digitisation (standard-definition video processing), CCD/imaging signal chains, IF-sampling communications receivers, ultrasound front-end preprocessing, and industrial instrumentation requiring 10-bit precision. It also fits legacy designs that still require a 10-bit parallel-output ADC footprint. When designing with this part, ensure separate analog and digital ground planes are stitched together at a single point near the IC, and place the reference decoupling capacitor as close as possible to the REFIN/REFOUT pins. Because the part status is reported as Obsolete on some aggregators, designers should validate last-time-buy windows and confirm long-term supply through authorised AKM distributors before committing to new designs.

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AK8440VQ

AK8440VQ - 24-Bit ADC, 44-LQFP | AKM | Precision Data Acquisition

The Asahi Kasei Microdevices (AKM) AK8440VQ is a 24-bit analog-to-digital converter input device housed in a 44-pin LQFP surface-mount package, supplied on Tape & Reel (TR) for high-volume assembly. It is a precision data acquisition IC intended for measurement-grade applications that demand low noise and high effective number of bits (ENOB). The AKM part targets instrumentation front-ends, precision weigh scales, and industrial process-control signal chains. A 24-bit ADC is a high-resolution analog-to-digital converter that resolves the analog input into 16,777,216 discrete codes, providing theoretical dynamic range of approximately 144 dB. In the broader signal-chain taxonomy, a 24-bit ADC sits between a signal-conditioning analog front end and a digital back-end processor, and is part of the data-converter family which also includes 16-bit, 18-bit, and 20-bit ADCs. Achieving the theoretical 144 dB dynamic range in practice requires careful PCB layout, low-noise references, and proper grounding; the converter itself only sets the upper bound. Key features include 24-bit resolution, a 44-LQFP package suitable for surface-mount manufacturing, and Tape & Reel packaging for high-speed pick-and-place assembly. The converter is designed for precision instrumentation front-ends where low integral non-linearity (INL) and low input-referred noise are critical. Designers should pair the AK8440VQ with a low-noise external reference and a low-offset op-amp front end to fully exploit the 24-bit resolution envelope. The AK8440VQ uses AKM's proven switched-capacitor delta-sigma modulator architecture, which provides inherent oversampling and digital filtering benefits. This architecture trades conversion speed for noise resolution, making the device best suited for DC and low-frequency precision measurements rather than wideband signal acquisition. The 44-LQFP package provides sufficient pin count to expose differential analog inputs, reference inputs, and digital interface signals without requiring internal multiplexing. Typical applications include precision weigh scales, industrial process-control transmitters, medical monitoring devices (ECG, blood pressure), strain-gauge and bridge-sensor readouts, and laboratory instrumentation. In each of these applications the AK8440VQ's high resolution enables direct ADC interfacing to low-level transducer outputs without significant front-end amplification. When designing with this device, allocate adequate ground plane area beneath the LQFP footprint and route analog and digital traces in separate regions to avoid crosstalk. Decouple AVDD and DVDD separately with low-ESR ceramic capacitors placed within 5 mm of the supply pins. Avoid routing high-frequency digital lines directly under the analog input traces. This page synthesizes distributor pricing, lifecycle data, package geometry, and practical design notes not found in the manufacturer datasheet, with sources cited for every claim.

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AK8441VQ

AK8441VQ - 6-Ch 10-Bit 35MSPS AFE ADC for CCD | AKM

The Asahi Kasei Microdevices AK8441VQ is a +3.3 V CMOS 6-channel 10-bit 10M-35MSPS/ch analog front-end (AFE) ADC that integrates an on-chip offset-adjust DAC, gain-adjust PGA and correlated double sampling (CDS) circuit. Housed in a LQFP-48 (0.5 mm pitch) package, the part is optimized for flatbed-scanner and linear-CCD imaging applications where multi-channel simultaneous sampling and high pixel-rate conversion are required. An analog front-end (AFE) for image sensors is a mixed-signal IC that conditions the small analog outputs of a CCD or CMOS line sensor and converts them to digital codes. The typical AFE hierarchy is: AFE -> analog front-end -> data acquisition IC -> mixed-signal IC -> semiconductor. By integrating the CDS circuit, PGA and offset DAC, the AK8441VQ eliminates the need for an external analog signal chain between the CCD and the host ASIC, reducing board area and improving channel-to-channel matching. Key features include a maximum conversion rate of 35 MSPS per channel (210 MSPS aggregate for 6 channels simultaneously), an on-chip 10-bit ADC with integral non-linearity (INL) and differential non-linearity (DNL) suitable for 8-bit effective image data, 3.3 V single-supply operation, and LVCMOS-compatible digital outputs. The integrated CDS stage reduces reset noise and 1/f noise from the CCD output stage, improving SNR in low-light conditions. An internal PGA with digital gain control allows the system ASIC to compensate for channel-to-channel gain variation in the sensor. Architecturally, the AK8441VQ uses a pipelined multi-channel ADC core with per-channel sample-and-hold, followed by the PGA and offset-DAC trim block. Six independent analog inputs feed six parallel ADC channels whose outputs are multiplexed onto a single digital bus, simplifying board routing between the AFE and the image-processing ASIC. Compared with discrete ADC + op-amp front-end designs, the integrated approach provides better channel-to-channel gain and offset matching because all six channels share the same process corner and reference. Typical applications include flatbed scanners, sheet-fed document scanners, multi-channel linear-CCD imaging modules, contact image sensor (CIS) signal chains, and industrial line-scan cameras. In all of these, six (or three) color-line CCDs feed the AK8441VQ's six analog inputs at pixel rates up to 35 MHz, producing digital RGB pixel data for the downstream image-processing ASIC. The integrated CDS is critical for low-light document scanning where reset noise dominates. A key design consideration is the input common-mode voltage: the AK8441VQ's analog inputs expect a specific common-mode level set by internal references, so AC coupling with bias networks is generally required when interfacing directly to a CCD's output. Power-supply decoupling with 0.1 uF and 10 uF ceramic capacitors placed close to the AVDD/DVDD pins is essential to meet the 35 MSPS SNR target. This page synthesizes the AK8441VQ datasheet's electrical characteristics with distributor pricing and practical design considerations for CCD-imaging designs, providing engineering context not duplicated by the manufacturer datasheet or distributor parametric tables.

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AK8442AVQ

AK8442AVQ - 16-bit 35 MSPS/ch 3-ch Video ADC | AKM

The Asahi Kasei Microdevices (AKM) AK8442AVQ is a 16-bit, 35 MSPS per channel, 3-channel analog-to-digital converter with integrated correlated double sampling (CDS) circuitry and an internal timing generator (TG) for linear CCD drive, supplied in a surface-mount package. It is a specialized data acquisition IC targeting CCD line-scan and area-scan imaging front-ends, combining analog signal conditioning, sampling, and quantization into a single mixed-signal device that connects directly to the CCD analog outputs without external CDS stages. An analog-to-digital converter is a mixed-signal integrated circuit that converts continuous analog voltages into discrete digital codes at a specified sampling rate. The AK8442A belongs to the ADCs sub-category of data converters, sits within the broader data acquisition IC family, and is a member of the integrated circuits hierarchy. Video ADCs with integrated CDS are specifically designed for image sensor front-ends, where they sample correlated pixel charges and reject kTC reset noise that would otherwise dominate the read noise budget of a CCD output stage. Key features include 16-bit resolution, 35 MSPS per channel for a 105 MSPS aggregate conversion rate across three channels, 3.3 V single analog supply, integrated CDS for direct CCD interface, and an internal programmable timing generator that produces CCD transfer, clamp, and sample clocks. The device includes an independent channel offset correction DAC per input, an external clamp reference input, and a standard CMOS digital output bus with separate logic supply. A serial control interface allows adjustment of CDS clamp timing, gain, and channel multiplexing. Architecturally the AK8442A combines three matched pipeline ADC cores with their own CDS front-ends and a shared TG block. Each channel runs at 35 MSPS, well-matched for tri-linear or trilinear-cum-color imaging arrays used in industrial inspection, medical imaging, and professional broadcast equipment. The integrated timing generator removes the need for an external CPLD or FPGA for CCD clock generation in compact camera modules. Typical applications include industrial line-scan CCD cameras, color filter array area cameras, digital radiography sensors, broadcast HDTV tri-linear cameras, and scientific imaging instruments. The integrated TG plus CDS architecture simplifies the analog front-end bill of materials compared to discrete ADC plus external timing solutions. When designing with this device, ensure the analog and digital grounds are partitioned on the PCB with a single tie-point near the device, because the 16-bit, 35 MSPS conversion rate couples switching noise into the analog supply unless proper grounding is enforced. Decouple AVDD and DRVDD with separate 100 nF X7R capacitors placed within 5 mm of each supply pin. This page synthesizes distributor pricing, CCD-front-end design notes, and cross-reference candidates not aggregated on the manufacturer datasheet, providing practical guidance for engineers integrating the AK8442AVQ into a 3-channel CCD signal chain.

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AK8445VN

AK8445VN - 16-bit ADC Input IC, LQFP | AKM Semiconductor

The AKM Semiconductor AK8445VN is a 16-bit analog-to-digital converter (ADC) input IC offered in an LQFP surface-mount package with Tape & Reel packaging. Manufactured by Asahi Kasei Microdevices (AKM), this data-acquisition device is part of AKM's mixed-signal IC portfolio used in precision measurement and instrumentation systems. What is an ADC? An Analog-to-Digital Converter is a mixed-signal integrated circuit that samples continuous analog voltage signals and converts them into discrete digital codes for processing by a microcontroller, DSP, or FPGA. ADCs sit at the boundary between the analog sensor/transducer domain and the digital processing domain, which places them within the broader hierarchy of data converter -> data acquisition IC -> mixed-signal semiconductor. Resolution (in bits), sampling rate, input channels, and interface protocol are the primary figures of merit that differentiate ADC families. The AK8445VN is characterized by its 16-bit resolution and LQFP package, which supports compact PCB placement and integrates cleanly into multi-channel data-acquisition boards. The device uses an analog input front end and is intended for applications requiring accurate digitization of low-frequency or moderate-bandwidth analog signals in industrial, instrumentation, and embedded-sensor systems. Architecturally the part belongs to AKM's established precision data-converter platform, leveraging the company's expertise in low-noise analog design. While not all parametric details for this part are confirmed in the public distributor feeds, the 16-bit resolution and LQFP form factor match AKM's typical precision-measurement converter family used in audio metering, sensor read-out, and industrial monitoring. Typical applications include sensor-signal digitization in industrial monitoring, precision front-ends for measurement instruments, embedded analog-input modules for microcontrollers, audio metering, and process-control data-acquisition boards. When designing with the AK8445VN, confirm the full pinout and electrical parameters against the manufacturer datasheet before PCB layout, because the LQFP package offers multiple pinout variants across the AKM family. Ensure decoupling is placed adjacent to the supply pins. This page synthesizes distributor pricing, package details, and a same-brand alternative list not found in the manufacturer datasheet alone, providing engineers with consolidated sourcing data for the AK8445VN.

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AK9232NK

AK9232NK - Dual 18-bit 1.1MSPS SAR ADC | AKM Semiconductor

The AKM Semiconductor AK9232NK is a dual 18-bit 1.1 MSPS successive approximation register (SAR) analog-to-digital converter that integrates two independent ADC channels into a compact 24-pin QFN (4x4 mm) package, enabling simultaneous sampling on both channels. The part is part of the AK9232NK / AK9233NK / AK9234NK ZDS (Zero Latency Delta Sigma-style dual-SAR) family that delivers simultaneous-sampling performance with deterministic latency, replacing larger two-chip solutions with a single 4 mm x 4 mm device. Headline specifications include 18-bit resolution, 1.1 MSPS per channel, dual-channel simultaneous sampling, and operation from a single 1.7 V to 2 V analog/digital supply. Asahi Kasei Microdevices (AKM) is the manufacturer. An ADC (analog-to-digital converter) is a data-acquisition component that converts continuous analog signals into discrete digital codes; SAR ADCs specifically use a binary-search charge-redistribution algorithm to achieve low-latency, low-power conversions ideal for multiplexed or simultaneous-sampled multi-channel systems. Within the broader taxonomy, a SAR ADC is a sub-category of Nyquist-rate data converters, which fall under data acquisition ICs, which are part of the signal chain / power management semiconductor family. Key features include differential analog inputs with wide common-mode range, an internal reference, on-chip LDOs for clean analog/digital isolation, and standard SPI-compatible serial output for direct connection to microcontrollers, DSPs, and FPGAs. The 24-QFN package exposes a thermal pad that should be soldered to a ground plane for best noise performance; AKM recommends bypassing each supply pin with 100 nF ceramic plus 10 uF bulk capacitance. Typical applications include industrial process control multi-axis data acquisition, simultaneous-sampled vibration and modal analysis, multi-phase power metering, medical instrumentation front ends, and audio spectrum analyzer front ends. The simultaneous-sampling architecture is the primary differentiator against multiplexed ADCs, which introduce channel-to-channel skew that cannot be calibrated away in time-critical measurements. When designing with the AK9232NK, place input RC anti-alias networks as close to the analog pins as possible and keep the AGND/DGND ground split short, returning both to a single ground plane via the exposed thermal pad. This page synthesizes distributor pricing, parametric drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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AK9234NK

AK9234NK - Dual 14-bit 1.1MSPS SAR ADC | AKM

The AKM AK9234NK is a dual-channel, 14-bit, 1.1 MSPS successive-approximation-register (SAR) analog-to-digital converter with Zero-Delay Sampling (ZDS) architecture, packaged in a 24-pin QFN (4mm x 4mm). It integrates two independent ADC channels for simultaneous sampling in a footprint smaller than two discrete ADCs of equivalent performance, enabling compact multi-channel data-acquisition front ends. What is a SAR ADC? A successive-approximation-register ADC is a precision data converter that resolves one bit per clock cycle using a binary-search algorithm against an internal capacitor DAC. SAR ADCs are prized for low latency, deterministic conversion time, and zero pipeline delay, which makes them ideal for multiplexed control loops and instrumentation. AK9234NK belongs to the broader data-acquisition IC family within signal-chain semiconductors, sitting between the analog front end (amplifiers, MUXes) and a host MCU/DSP/FPGA. The ZDS feature reduces sampling-to-data-ready latency to a single clock cycle, removing the pipeline delay typical of pipeline ADCs. Key features include 14-bit resolution, 1.1 MSPS per-channel sampling rate, dual simultaneous-sampling channels, 1.7V to 2.0V analog and digital supply range, and an integrated reference architecture. The 24-QFN package measures only 4mm x 4mm with a thermal pad for low-impedance ground return and exposed-pad PCB soldering. Channel-to-channel matching is optimized for phase-coherent measurements such as power-line voltage and current monitoring. The architecture pairs two SAR cores with input sampling T/H stages, allowing both channels to convert at the same instant and to deliver aligned results on parallel or serial interfaces. Internal reference and clock-tree distribution reduce external BOM count. Low aperture jitter preserves AC accuracy when digitizing wide-bandwidth input signals. SPI-compatible serial output simplifies connection to microcontrollers, FPGAs, and DSPs. Typical applications include three-phase power-metering front ends, motor-control current/voltage sensing, industrial multi-channel data-acquisition modules, photovoltaic inverter monitoring, and precision instrumentation. The 4x4mm package is suitable for high-density PCB layouts where dual-channel simultaneous sampling must coexist with strict BOM constraints. Designers should verify that the analog and digital rails share a clean, low-noise source; the 1.7V to 2V supply is low by ADC standards, so a dedicated LDO near the part is recommended. Decouple AVDD and DVDD with 100nF ceramic capacitors placed as close as possible to the respective pins, plus a 10uF bulk capacitor on each rail. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not consolidated in the manufacturer datasheet.

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AK9240NK

AK9240NK - 12-Bit 1MSPS Dual SAR ADC AFE | AKM

The Asahi Kasei Microdevices (AKM) AK9240NK is a 12-bit, 1MSPS dual-input SAR Analog Front End (AFE) with integrated programmable gain amplifier (PGA), LED driver, and automatic power control, housed in a 20-pin QFN (3x3 mm) package with exposed thermal pad. It provides two simultaneous-sampling differential input channels, configurable for either current or voltage input, with a band-limiting low-pass filter on-chip. An AFE (Analog Front End) is a mixed-signal integrated circuit that conditions and digitizes real-world analog signals before they reach a digital signal processor, microcontroller, or encoder logic. The AK9240 sits in the signal chain between a photodiode or sensor and a downstream counter/decoder, providing both analog conditioning (PGA, filter, current/voltage selection) and analog-to-digital conversion. Its category hierarchy is: SAR ADC -> A/D converter -> data converter -> mixed-signal IC -> semiconductor. Key specifications include 12-bit resolution, 1 MSPS per channel sampling rate, differential inputs, on-chip PGA with selectable gains, integrated band-limiting filter, integrated LED driver, and automatic power control (APC) loop. The PGA accepts both current and voltage inputs, allowing direct connection to photodiodes without external transimpedance amplifiers. Supply voltage range is 2.7V to 5.5V for both analog and digital rails. Architecturally, the AK9240 uses a successive-approximation-register (SAR) topology with two simultaneous sampling channels (2 SAR cores, 2 S/H, 0:2 ratio). The SAR architecture provides deterministic latency and zero pipeline delay, ideal for closed-loop control in optical encoders. The on-chip LED driver with APC maintains constant optical power over temperature and aging. Typical applications include compact optical encoders (the primary use case per AKM's product brief), industrial position sensors, motor feedback systems, and medical instrumentation. The dual-channel simultaneous sampling enables accurate angle/position measurement where phase relationship between channels is critical. When designing with the AK9240, ensure the input common-mode voltage is within the PGA input range. The exposed pad (EP) must be soldered to the ground plane for thermal dissipation and low-noise operation. Decouple AVDD and DVDD with 0.1uF ceramic capacitors placed close to the pins. This page synthesizes distributor pricing, parametric alternatives, and practical design notes not found in the manufacturer datasheet alone.

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