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المنتجات (39,000+)

AK4458VN - 32-Bit 8-Channel 768kHz DAC | AKM
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 - 32-Bit 2-Channel High-Resolution DAC | AKM
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 - 32-Bit 8-Channel DAC | AKM | Premium Audio
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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AK4480EF - 32-Bit 216kHz 114dB Audio DAC | AKM
AK4480EF

AK4480EF - 32-Bit 216kHz 114dB Audio DAC | AKM

The Asahi Kasei Microdevices AK4480EF is a 32-bit high-performance digital-to-analog converter for premium audio equipment, supporting I2S digital audio and DSD playback up to 216 kHz. It achieves 114 dB dynamic range and is packaged in a 30-pin VSOP with a 0.65 mm pitch. The AK4480EF is designed for applications requiring high-resolution audio conversion, broad output dynamic range, and a dedicated digital-to-analog output stage. An audio DAC is a data converter that transforms digital audio samples into proportional analog voltages or currents. Within the signal-chain hierarchy, a DAC sits between a digital source, such as a Blu-ray Disc player, music server, or network audio streamer, and an analog amplifier or loudspeaker system. The AK4480EF uses a 32-bit digital filter within its conversion architecture, combining high sample-rate support with low-distortion output characteristics. The device's 32-bit resolution accommodates high-resolution PCM content, while its 216 kHz DSD capability supports the highest-rate audio formats associated with modern source components. A 114 dB dynamic range provides ample headroom between low-level musical passages and full-scale program material. Its I2S interface allows digital audio data and clock signals to connect directly to an appropriate digital audio source or digital-to-analog conversion stage. AK4480EF is supplied in a compact 30-pin VSOP package with 0.65 mm pitch. This high-density surface-mount construction supports compact digital audio products while requiring careful PCB layout, short clock and data routes, and stable grounding. The commercial-grade component is specified for operation from -10 °C to +70 °C, making it appropriate for indoor consumer and professional audio equipment operating within that environmental range. Typical uses include Blu-ray Disc player output stages, high-resolution network streamers, USB-audio interfaces, digital mixers, surround-sound processors, and premium headphone amplifiers. It is especially relevant where a system must accept high-rate I2S audio and preserve a wide dynamic range before the signal reaches the analog power-amplifier stage. System designers should also account for the external analog reconstruction and output circuitry surrounding the converter. For implementation, follow the manufacturer datasheet for pin assignment, analog-output configuration, digital-interface timing, power sequencing, and supported sampling modes. Keep digital input and clock traces short, provide a clean return path, decouple the supply pins near the device, and evaluate the analog output network for the intended amplifier input. These measures help preserve the converter's low-noise and low-distortion performance. This product page combines the AK4480EF's core digital-audio specifications, package characteristics, operating limits, application guidance, design considerations, and comparison context. It also distinguishes exact-footprint replacement decisions from broader functional DAC choices, helping engineers evaluate the converter for both technical fit and board-level integration.

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AK4482VT - 24-Bit 216kHz Stereo Audio DAC | Asahi Kasei
AK4482VT

AK4482VT - 24-Bit 216kHz Stereo Audio DAC | Asahi Kasei

The Asahi Kasei Microdevices AK4482VT is a 24-bit, two-channel audio digital-to-analog converter for digital audio equipment. It supports sampling rates up to 216 kHz, operates from a 5 V supply, and provides fully differential switched-capacitor outputs in a 16-pin TSSOP package. The device is designed for applications requiring a compact, low-noise stereo audio output stage. An audio DAC is a converter that transforms digital PCM or I2S audio data into analog voltage signals suitable for amplifiers, headphones, speakers, and line-level equipment. Within the signal-chain hierarchy, it belongs to the digital-to-analog converter class, supports the ADC/DAC product category, and operates as an audio interface IC within a broader semiconductor system. The AK4482 uses AKM's multi-bit modulator architecture to provide wide dynamic range. The manufacturer datasheet identifies a dynamic range of 111 dB, 24-bit resolution, two audio channels, and support for sampling rates up to 216 kHz. Its switched-capacitor outputs are fully differential, eliminating the need for output AC-coupling capacitors while helping maintain performance in systems experiencing excessive clock jitter. The AK4482VT accepts digital audio through an I2S interface and converts each channel into a balanced analog output. This architecture is appropriate for digital audio sources that already perform format conversion, sample-rate conversion, volume control, or signal routing before the DAC stage. The converter separates digital processing from the analog output path, allowing the analog section to be optimized for low distortion and channel symmetry. Typical uses include premium digital audio equipment, professional audio interfaces, consumer hi-fi systems, game-console audio equipment, network-audio players, and digital recording equipment. The 16-pin TSSOP package makes the part suitable for compact boards, while the two-channel architecture reduces component count compared with implementing separate single-channel converters. Power-supply layout, grounding, clock quality, and output-stage loading directly affect converter performance. Place input, output, and reference-related bypass connections according to the manufacturer application guidance, keep analog and digital return currents separated where practical, and terminate unused inputs according to the datasheet. The differential outputs should be paired with a suitable reconstruction and line-output network for the intended load. This product record combines the exact AK4482VT specifications, sourcing guidance, application analysis, and engineering cautions with a strict review of same-footprint replacements. It distinguishes documented electrical characteristics from parameters that require confirmation in the manufacturer datasheet, helping engineers assess fit before committing to a layout or production release.

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AK4490EN - 32-Bit 2ch Audio DAC, 768kHz DSD | Asahi Kasei Microdevices
AK4490EN

AK4490EN - 32-Bit 2ch Audio DAC, 768kHz DSD | Asahi Kasei Microdevices

Asahi Kasei Microdevices AK4490EN is a premium 32-bit stereo digital-to-analog converter (DAC) with 2-channel output, DSD playback up to 768 kHz (DSD256) and an I2S digital audio interface, packaged in a 48-pin QFN (6 x 6 mm) with an exposed thermal pad. It is designed for high-fidelity audio equipment where low distortion and wide dynamic range translate directly into audible transparency, and it is the part of choice for network streamers, USB DACs, CD transports and digital preamplifiers. A DAC (digital-to-analog converter) is a mixed-signal semiconductor that reconstructs a continuous analog voltage from a digital audio stream. The broader hierarchy runs DAC -> audio data converter -> ADC/DAC converter -> mixed-signal integrated circuit -> semiconductor. The AK4490EN implements a multi-bit delta-sigma architecture, a topology favored in premium audio because it pushes quantization noise far out of the audio band, leaving the in-band noise floor extremely low compared with basic 1-bit sigma-delta designs. Key features include native 32-bit word length, dual-channel simultaneous conversion, DSD256 (768 kHz) decoding capability, and an I2S-compatible serial interface that accepts PCM data at high clock rates. The device is a fully differential architecture with an exposed pad that must be soldered to a ground plane to carry heat away and to provide a low-impedance return for the output stage. Its surface-mount footprint keeps board area small for compact desktop and portable audio products. Technically, the AK4490EN combines a high-speed delta-sigma modulator stage with a multi-bit DAC core and an analog output filter, giving the low distortion and wide dynamic range that characterize AKM's premium 32-bit 2ch DAC family. The 48-QFN package with a thermal pad keeps junction temperature rise low when driving line-level outputs into the usual 10 kohm-plus loads of audio preamplifiers and active stages. Typical applications include high-end USB and network DAC boards, CD player and streamer digital stages, professional studio monitor digital crossovers, television and set-top box audio, and portable hi-fi headphone DAC dongles. In each case the converter sits between an I2S digital source and an analog output stage, so clocking and layout discipline translate directly into final sound quality. One critical design consideration is that DSD and PCM paths require different filter configurations; use the manufacturer datasheet tables for sampling-rate, MCLK ratio and filter-mode settings rather than assuming values. A second is that the exposed pad must be tied to a solid ground plane, and the analog output routing should be kept short and symmetric to minimize channel skew and distortion. This page consolidates device specifications, drop-in alternatives with quantified differences, application guidance and practical design notes, giving engineers a single reference for the AK4490EN before committing to a layout.

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AK4490EQ - 32-Bit 768kHz 2-Channel Audio DAC | AKM
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 - 32-Bit 2-Ch DAC, 768 kHz | Asahi Kasei
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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AK4495EQ - 32-Bit Dual Audio DAC | Asahi Kasei
AK4495EQ

AK4495EQ - 32-Bit Dual Audio DAC | Asahi Kasei

The Asahi Kasei Microdevices AK4495EQ is a premium 32-bit, two-channel audio digital-to-analog converter with a listed dynamic range of 123 dB, support for audio data rates up to 768 kHz, and DSD operation. It accepts I2S digital audio and is offered in a 44-LQFP surface-mount package measuring 10 mm by 10 mm. The device is intended for high-end digital audio equipment where two balanced or unbalanced analog output channels, high-resolution PCM decoding, and direct DSD playback are important. An audio DAC is a semiconductor that converts digital audio samples into continuous analog voltage signals. Its functional position is digital audio source decoding followed by an analog reconstruction and output stage. The AK4495EQ belongs to the ADC/DAC hierarchy within integrated circuits and more specifically to the premium audio DAC class. This positioning makes it relevant to network streamers, CD transports, digital preamplifiers, USB audio interfaces, studio monitors, and other equipment that requires two-channel conversion with high sample-rate support. The AK4495EQ's headline features are its 32-bit architecture, two-channel output configuration, 123 dB dynamic range, and operation up to 768 kHz. The manufacturer's component description identifies the device as a quality-oriented premium DAC using AKM's VELVET SOUND architecture. Its digital interface supports I2S, while the listed DSD capability broadens its compatibility with high-resolution source formats. These features place the converter in premium two-channel applications rather than ordinary low-cost CD-player output stages. The AK4495EQ is packaged in a 44-lead LQFP measuring 10 mm by 10 mm. Such a package provides a practical mix of digital inputs, analog outputs, control connections, and supply pins for a mixed-signal converter. Surface-mount assembly also supports compact equipment construction, although a high-performance audio implementation still requires careful treatment of analog and digital supply rails, reference connections, clocking, grounding, and output-stage layout. Typical uses include a two-channel network streamer, a high-resolution USB DAC, a CD transport with digital output, a digital preamplifier, and a professional monitoring converter. The two-channel arrangement suits stereo signal paths. Its 768 kHz capability can accommodate high-resolution PCM sources, while DSD support makes it relevant to designs intended to preserve DSD streams through the digital portion of the signal chain. When laying out a board around the AK4495EQ, use the manufacturer's pin-description table to assign every one of the 44 leads and preserve the exposed structure of the LQFP package. Keep sensitive analog outputs away from digital clock and interface routing, maintain short return paths, and decouple supply pins close to the component. Confirm the required analog output architecture, clocking method, mode configuration, and external filter requirements against the manufacturer datasheet before releasing production artwork. This product record combines the exact AK4495EQ identity, package information, digital-interface details, and resolution specifications with a drop-in replacement assessment, application guidance, and engineering-oriented selection criteria. It is intended to help designers distinguish a true same-footprint replacement from a merely similar DAC and to plan a clean high-resolution audio implementation.

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AK4497EQ - 32-Bit 2-Channel 128dB Audio DAC | AKM
AK4497EQ

AK4497EQ - 32-Bit 2-Channel 128dB Audio DAC | AKM

The Asahi Kasei Microdevices AK4497EQ is a premium 32-bit stereo digital-to-analog converter with two channels, 128 dB dynamic range, support for 768 kHz DSD and PCM audio, and a 64-pin HTQFP package measuring 10 mm by 10 mm. The converter uses AKM's VELVET SOUND architecture, a technology associated with high-end audio equipment and designed for low-distortion signal conversion. A digital-to-analog converter, or DAC, is an integrated circuit that converts digital PCM or DSD audio data into continuous analog voltage signals for downstream amplifiers, headphones, or line-level equipment. The AK4497EQ belongs to the audio DAC family within the broader semiconductor and signal-conversion hierarchy. Its dual-channel architecture allows simultaneous left- and right-channel playback, while its high-resolution format support makes it suitable for premium audio systems that require faithful reproduction of digital recordings. The AK4497's defining feature is the VELVET SOUND architecture, which the manufacturer describes as delivering low distortion and wide dynamic range. The device also integrates an OSR Doubler switched-capacitor filter. According to the manufacturer description, this filter supports a wide range of input signals, lowers out-of-band noise, and helps reduce power consumption. These characteristics make the converter useful in designs where analog output purity and high-resolution playback are more important than a compact, low-cost audio implementation. The AK4497EQ supports 32-bit PCM audio and DSD playback up to 768 kHz. It is packaged in a 64-pin HTQFP surface-mount package with a 10 mm by 10 mm body. The package format provides a substantial thermal and routing footprint for a high-performance stereo converter, but it also requires a carefully designed PCB with adequate exposed-pad handling, clean analog grounding, and separation between digital and analog signal paths. Typical applications include premium desktop and portable DACs, network audio players, high-resolution headphone amplifiers, digital audio workstations, and consumer audio receivers requiring DSD support. The AK4497EQ is particularly appropriate when the system must accept high-rate digital formats while preserving a low-noise analog output stage. It is also suitable for custom audio platforms where the converter is paired with a high-quality output amplifier, analog filter, and precision clock source. For implementation, use the manufacturer's datasheet for the exact pin assignments, recommended application circuit, supported interface modes, clock requirements, and power-supply sequencing. Keep digital clock and data traces away from the analog output section, provide the specified bypass capacitors at the power pins, and route analog return currents without passing through digital return paths. This product page combines the manufacturer's AK4497EQ datasheet information with package, application, sourcing, and drop-in comparison guidance. It is designed to help engineers evaluate the AK4497EQ for high-resolution stereo DAC implementations while emphasizing the practical PCB and signal-integrity decisions that determine realized audio performance.

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AK4499EQ - 32-Bit 4-Channel Audio DAC | Asahi Kasei
AK4499EQ

AK4499EQ - 32-Bit 4-Channel Audio DAC | Asahi Kasei

The Asahi Kasei Microdevices AK4499EQ is a premium switched-resistor, four-channel audio digital-to-analog converter with 32-bit resolution, PCM sampling rates from 8 kHz to 768 kHz, and DSD512 input support. The device is offered in a 128-pin HTQFP package measuring 14 mm by 14 mm. A DAC is a digital-to-analog converter that transforms PCM, DSD, or other digital audio samples into continuous analog voltage signals for amplification and loudspeaker reproduction. The AK4499EQ belongs to the broader digital-to-analog converter hierarchy and uses a switched-resistor architecture intended to provide low distortion and low noise in high-resolution audio equipment. The AK4499EQ supports four DAC channels and multiple digital audio interfaces, including PCM, DSD, and EXDF formats. Its maximum PCM rate is 768 kHz, while its maximum DSD rate is DSD512. These capabilities suit high-resolution network players, USB DACs, professional audio equipment, digital mixing consoles, and premium home-audio systems. Configuration is supported through I2C and 3-wire serial register control. The switched-resistor conversion architecture separates the conversion function from conventional current-source ladder behavior and is intended to improve linearity and reduce distortion. The manufacturer describes the device as a premium four-channel DAC aimed at applications where low distortion, low noise, and support for very high-resolution source material are priorities. Operation can be configured for use with internal LDO regulation or external analog supplies, providing flexibility in power-supply implementation. Typical implementations place the converter between a digital audio receiver such as AK4118 and a high-quality analog output stage. AK4499EX is associated with related AK4499-family designs, while AK4191EQ appears in architectures using an AKM digital interface and converter chipset. The four-channel structure also permits balanced or multichannel output arrangements when the surrounding circuitry supports the converter's channel organization. PCB design requires close attention to the exposed-pad package, analog and digital supply routing, and separation of high-speed digital interfaces from sensitive analog outputs. Place output capacitors and analog routing in accordance with the manufacturer reference layout, keep the exposed pad properly connected to the ground plane, and decouple each supply domain close to its pins. The 14 mm by 14 mm footprint makes thermal management and analog-layout planning more demanding than in a small QFN audio converter. This product page combines the manufacturer datasheet information with practical interface, application, package, and replacement guidance. It also distinguishes verified AK4499EQ characteristics from functional alternatives so engineers can determine whether a candidate is a true pin-compatible replacement or merely a different premium DAC architecture.

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AK4528VF - 24-Bit 96kHz Audio CODEC | AKM | LSSOP-28
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 - 24-bit 192kHz Stereo Audio CODEC | Asahi Kasei Microdevices
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 - 24-bit 192kHz Stereo Audio CODEC | AKM
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 - 16-Bit Low-Power Audio ADC | Asahi Kasei
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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AK5357ET - 24-Bit Stereo Audio ADC, 96 kHz | AKM
AK5357ET

AK5357ET - 24-Bit Stereo Audio ADC, 96 kHz | AKM

The Asahi Kasei Microdevices/AKM AK5357ET is a 24-bit stereo audio analog-to-digital converter with a sampling-rate range of 4 kHz to 96 kHz, supplied in a 16-pin TSSOP package. It uses Enhanced dual-bit delta-sigma conversion techniques to provide high accuracy for multimedia audio systems and accepts I2S-format digital audio output. The device is designed for applications where two audio channels must be digitized with a high-resolution serial interface. An audio ADC is a specialized data-acquisition IC that converts left- and right-channel analog audio voltages into sequential digital samples. Within the signal path, the ADC belongs to the broader ADC/DAC category and ultimately to the integrated-circuit and data-conversion families. Its sampling rate defines how many audio samples are captured each second, while the 24-bit conversion resolution establishes the numerical format of the resulting samples. The AK5357ET operates with the audio clock signals MCLK, SCLK, and LRCK. The manufacturer datasheet states that all external clocks must be present unless the PDN pin is held low. If the external clocks are absent, placing the converter in power-down mode prevents its internally refreshed logic from drawing excess current. This clock-control requirement makes power sequencing an important part of the surrounding system design. A typical implementation places the AK5357ET after the microphone preamplifier or line-level input stage. Analog inputs are sampled, converted by the dual-bit delta-sigma architecture, and transferred to a digital audio processor or audio codec through the serial interface. The 16-pin TSSOP package is suitable for compact consumer audio, communication, and multimedia equipment where board area is constrained. When designing the PCB, treat MCLK, SCLK, and LRCK as sensitive digital timing signals and route them away from analog input traces. Establish analog and digital ground partitioning according to the layout guidance in the manufacturer datasheet, and place input and interface components close to their associated pins. The analog signal path should be kept short and away from high-current switching nodes. This page consolidates the confirmed converter characteristics, interface requirements, application guidance, and a verified same-family replacement into a design-focused component reference for audio subsystem engineers.

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AK5357VT - 24-Bit Stereo Audio ADC | Asahi Kasei
AK5357VT

AK5357VT - 24-Bit Stereo Audio ADC | Asahi Kasei

Asahi Kasei Microdevices AK5357VT is a 24-bit stereo audio analog-to-digital converter with a sampling-rate range of 4 kHz to 96 kHz, an I2S interface, and a 16-pin TSSOP package. The converter uses enhanced dual-bit delta-sigma techniques to support multimedia audio acquisition. An audio ADC is an interface integrated circuit that converts left and right analog audio signals into digital samples. It belongs to the data-converter hierarchy, which includes ADCs and DACs, and operates as part of a broader audio signal-chain semiconductor. Audio ADCs are commonly positioned between microphones, line inputs, and digital audio processors. The AK5357VT supports sampling rates from 4 kHz through 96 kHz, making it suitable for voice capture, multimedia equipment, and stereo digital-audio systems. Its 24-bit resolution provides 16,777,216 discrete codes per sample. Digital audio data is transferred through an I2S interface, while the converter operates from a 2.7 V to 5.5 V supply range. Enhanced dual-bit delta-sigma conversion is the core signal-processing technique used by the AK5357. Delta-sigma architecture shapes quantization noise into a higher-frequency band, where digital filtering can reduce its effect on the audio passband. This approach is particularly useful when high resolution and compact implementation are more important than the very low noise associated with a conventional linear converter. Typical uses include stereo multimedia audio inputs, digital-recording equipment, consumer audio interfaces, and systems that accept analog line-level signals for conversion to I2S data. The broad sampling-rate range also allows one converter design to cover multiple audio standards, from low-rate speech processing through high-rate multimedia playback and capture. System integration requires correct clocking because MCLK, SCLK, and LRCK must be present during active operation. If those external clocks are absent, the PDN pin should be driven low to place the AK5357VT in power-down mode. This prevents excess current caused by internal dynamically refreshed logic operating without required clock signals. This product page consolidates the core electrical characteristics, clocking requirements, package information, drop-in candidates, and practical integration notes for engineers evaluating the AK5357VT. Use the AK5357 English datasheet for the authoritative pin-description table, application circuit, electrical characteristics, and ordering information.

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AK5359VT - 24-Bit 192kHz Stereo ADC | Asahi Kasei Microdevices
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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AK5374EN - 24-Bit 48kHz USB Audio ADC | Asahi Kasei
AK5374EN

AK5374EN - 24-Bit 48kHz USB Audio ADC | Asahi Kasei

Asahi Kasei Microdevices AK5374EN is a stereo 24-bit audio analog-to-digital converter with USB 2.0 connectivity and a 48 kHz sampling rate, packaged in a 36-pin QFN measuring 5 mm by 5 mm. The device integrates a USB serial interface engine, USB transceiver, Audio Class processing block, endpoints, and a two-channel ADC, reducing the external circuitry needed for USB digital audio capture. An audio ADC is a mixed-signal integrated circuit that converts left- and right-channel analog audio into digital sample data. In the signal-chain hierarchy, the AK5374EN sits between microphones, line inputs, or other analog audio sources and a USB audio host. Its integrated USB interface combines conversion, clocking, endpoint management, and digital transport in one package, making it suitable for compact USB audio equipment. The principal features include stereo 24-bit conversion, operation up to 48 kHz, an integrated USB 2.0 interface, and a 3 V to 3.6 V supply range. Commercial-grade screening and an operating range of -10°C to +70°C suit room-temperature consumer, computing, and communications equipment. The 5 mm by 5 mm QFN-36 package uses a 0.40 mm pin pitch and is described as halogen-free and plastic-bodied. Technically, the AK5374EN combines analog input conversion with a full-speed USB serial interface engine. The Audio Class processing block and endpoints support digital audio transfer between the converter and a connected USB host, while the integrated transceiver reduces the need for discrete USB interface components. The analog section accepts a nominal 0 V to 1.4 V input range, allowing compatibility with common line-level signals when the surrounding circuit provides appropriate attenuation, biasing, and signal conditioning. Typical uses include USB microphones, headset interfaces, portable digital recorders, conference-audio terminals, streaming devices, and industrial audio-capture adapters. In each case, the stereo inputs can be conditioned before conversion, and the integrated USB interface can connect directly to a host computer or embedded USB controller. The compact QFN-36 package supports space-constrained products but requires careful PCB layout and thermal verification. The primary design consideration is analog signal integrity. Keep analog input routing short, maintain a continuous ground reference, decouple the supply close to the device, and follow the manufacturer datasheet for USB impedance and clock recommendations. Because the converter and transceiver share a compact package, converter, clock, and USB return-current paths should be arranged to minimize coupling into the audio input stage. This product overview combines the verified AK5374EN electrical and package characteristics with practical guidance for USB audio capture designs. It also identifies the major selection criteria—resolution, sample rate, USB integration, package size, operating grade, and analog-input requirements—without substituting an unverified substitute for a confirmed pin-compatible device.

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AK5381ET - 24-Bit Stereo 96 kHz ADC | Asahi Kasei
AK5381ET

AK5381ET - 24-Bit Stereo 96 kHz ADC | Asahi Kasei

Asahi Kasei Microdevices/AKM AK5381ET is a 24-bit stereo delta-sigma audio analog-to-digital converter with a sampling-rate range of 4 kHz to 96 kHz, supplied in a 16-pin TSSOP package with 0.65 mm lead pitch. It accepts left- and right-channel analog audio through dedicated AINL and AINR inputs and provides digital audio data through its serial interface. An audio ADC is a data-acquisition IC that converts left and right analog audio signals into digital words for transmission to a DSP, digital mixer, audio codec, or digital recording system. The AK5381 belongs to the stereo ADC, delta-sigma ADC, audio data-converter, and integrated-circuit hierarchies. Enhanced dual-bit delta-sigma modulation supports its high-resolution conversion function while the digital decimation filter and serial interface provide the resulting audio data to the following processing stage. The principal device characteristics include 24-bit resolution, a maximum sampling rate of 96 kHz, and a 4 kHz minimum sampling rate. The converter supports a 2.7 V to 5.5 V operating supply range and uses I2S serial audio. Its differential analog and digital ground pins help engineers separate analog signal return paths from digital return paths, while AGND, DGND, and VCOM support the converter’s internal analog reference arrangement. The AK5381ET is intended for high-end audio systems in which two channels must be digitized at rates suitable for CD-quality and higher-resolution playback. Its architecture is based on enhanced dual-bit delta-sigma techniques, which provide a straightforward interface between an analog audio front end and a digital audio processing chain. System clocks are handled through MCLK, CKS0, CKS1, and CKS2-related functions, while LRCK, SCLK, and SDTO support serial audio transfer. Typical applications include professional audio equipment, multichannel mixers, digital recording consoles, high-resolution audio interfaces, and consumer playback systems. The 4 kHz-to-96 kHz range makes the converter suitable for voice, conventional CD-rate audio, and higher-rate digital-audio paths. Its two-channel architecture supports balanced stereo conversion when the circuit is arranged according to the manufacturer’s application guidance. The principal design consideration is maintaining clean, quiet analog and digital power rails while preserving the converter’s clock and data timing integrity. Place decoupling capacitors close to the supply pins, route analog and digital returns according to the pin-description and layout guidance in the manufacturer datasheet, and keep high-current digital clock traces isolated from the analog input network. This product page consolidates the AK5381ET conversion capabilities, interface details, pin constraints, application guidance, and documented drop-in considerations into an engineering-oriented reference. It also distinguishes verified device attributes from parameters that require confirmation before layout, sourcing, or production release.

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AK5383VS - 24-Bit 96kHz Stereo Audio ADC | AKM
AK5383VS

AK5383VS - 24-Bit 96kHz Stereo Audio ADC | AKM

Asahi Kasei Microdevices AK5383VS is a 24-bit, 96 kHz, two-channel delta-sigma analog-to-digital converter for professional digital audio systems. It uses 128-times oversampling and Enhanced Dual Bit modulator architecture, delivers 110 dB dynamic range, and is packaged in a 28-pin plastic SOP format. The AK5383VS also operates from a +5 V analog supply. An audio ADC is a specialized data-converter IC that transforms balanced or unbalanced analog audio into digital PCM data. The digital-audio ADC category sits within signal-chain and data-converter ICs, where precision, low distortion, clocking, and output-interface compatibility determine whether the converter is suitable for recording equipment, digital mixing consoles, studio monitors, broadcast infrastructure, or professional audio interfaces. Key features include 24-bit conversion resolution, two simultaneous analog channels, 128-times oversampling, and a maximum sampling rate of 96 kHz. According to the AKM datasheet, the Enhanced Dual Bit architecture provides 110 dB dynamic range while retaining the low-distortion characteristics associated with single-bit delta-sigma modulators. These characteristics make the AK5383VS appropriate for professional conversion stages requiring high-resolution audio capture. The converter integrates a two-channel audio ADC and a configurable digital audio output stage. Its serial interface supports integration with digital audio processors, clock controllers, sample-rate converters, and professional digital consoles. Designers should treat the analog input, reference, power, ground, and digital clock connections as separate implementation domains because correct partitioning directly affects noise, channel matching, and signal integrity. Typical applications include professional audio interfaces, digital mixing consoles, studio recording equipment, broadcast monitoring, digital loudspeaker processors, and multichannel measurement systems. The two-channel architecture is particularly useful where stereo or balanced dual-channel conversion is required without implementing two separate single-channel converter packages. The primary design consideration is preserving the quality of the analog front end. Balanced inputs, low-noise protection resistors, suitable anti-alias filtering, solid grounding, and clean clock distribution can be as important as the nominal ADC resolution. The +5 V supply and analog inputs also require attention to the datasheet limits because excessive input voltage or current can damage the converter. This product overview combines the manufacturer’s converter architecture, channel and sampling-rate details, package information, application guidance, and drop-in comparison considerations into one engineering reference. It is intended to help hardware designers evaluate signal-chain fit, interface compatibility, and board-level implementation before committing to a professional audio design.

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AK5384VF - 24-Bit 4-Channel 96 kHz ADC | AKM
AK5384VF

AK5384VF - 24-Bit 4-Channel 96 kHz ADC | AKM

Asahi Kasei Microsystems AK5384VF is a 24-bit, four-channel audio ADC with support for sampling rates from 8 kHz to 96 kHz in a 28-pin TSSOP package. The converter uses Enhanced dual-bit delta-sigma modulation and supports both master mode and TDM data format, making it suitable for multichannel audio systems that require accurate simultaneous analog-to-digital conversion. An audio ADC is a data-converter IC that converts four analog audio inputs into high-resolution digital samples. Its role within a signal chain is to establish the digital representation used by processors, mixers, storage systems, and communications equipment. The AK5384VF belongs to the ADC and DAC family within integrated circuits and ultimately to the broader semiconductor and signal-conversion hierarchy. The AK5384VF provides four conversion channels, 24-bit resolution, and an 8 kHz-to-96 kHz sampling-rate range. Its Enhanced dual-bit delta-sigma technique supports high accuracy while targeting cost-sensitive multichannel audio designs. Master-mode operation and TDM output allow the converter to work within synchronized multichannel audio architectures rather than serving as an isolated single-channel codec. Digital interface features support integration into professional audio, consumer audio, and communications equipment. TDM format is particularly useful when several audio channels must share a digital transport, while master mode provides a defined timing relationship between the converter and the surrounding system. The manufacturer datasheet also documents power-down control and digital-filter reset behavior, including the requirement to reset the filter after power-up. Typical applications include multichannel digital mixing consoles, surround-sound audio interfaces, broadcast equipment, sound-card front ends, active speaker systems, and industrial audio acquisition platforms. Its four-channel architecture reduces the number of separate converters required in a balanced audio subsystem and provides a common digital interface for channel-rich products. PCB implementation requires careful analog-input routing, stable supply and ground distribution, appropriate input filtering, and compliance with the manufacturer’s reference layout and decoupling guidance. The analog and digital sections should be positioned to minimize coupling from switching nodes and high-current return paths. Designers should also confirm the exact clock mode and interface timing against the datasheet before releasing a layout. This product summary consolidates the AK5384VF architecture, sampling capabilities, package information, application guidance, design cautions, and verified sourcing references into one engineering-focused resource. It also identifies the limitations of unqualified replacement candidates so that a proposed substitute is validated for footprint, pinout, interface timing, clocking, and power sequencing before design use.

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AK5386VT - 24-Bit 216kHz Stereo Audio ADC | Asahi Kasei
AK5386VT

AK5386VT - 24-Bit 216kHz Stereo Audio ADC | Asahi Kasei

The Asahi Kasei Microdevices AK5386VT is a stereo audio analog-to-digital converter with 24-bit resolution, single-ended inputs, and a sampling-rate range of 8 kHz to 216 kHz, housed in a 16-pin TSSOP package. It supports 3.3 V and 5 V analog and digital supply operation and uses an I2S-compatible serial interface for digital audio data transfer. An audio ADC is a mixed-signal data-converter IC that transforms left and right analog audio signals into digital sample data. Its place in the product hierarchy is audio ADC → delta-sigma ADC → data converter → analog and mixed-signal IC. This conversion allows audio equipment to preserve waveform information for processing, transmission, recording, playback, and digital storage. The AK5386VT implements Enhanced dual-bit delta-sigma techniques to balance conversion resolution, sampling performance, and implementation cost. Its 24-bit word length supports high-resolution professional and consumer audio systems, while the 8 kHz lower sampling limit accommodates voice-band content. The 216 kHz upper limit supports high-rate digital audio acquisition and processing. A 16-TSSOP package supports compact, surface-mount PCB layouts. The device includes separate left and right single-ended analog inputs and an I2S digital interface. Its 3.3 V and 5 V supply options provide flexibility in audio systems that use either conventional or lower-voltage digital logic. Because the AK5386VT performs both channels in one package, it can reduce component count and simplify synchronization between stereo channels. Clocking, digital-audio format, and analog front-end requirements must still be checked against the manufacturer pin description and timing diagrams. Typical applications include professional audio conversion, multichannel recording equipment, digital mixing consoles, consumer-audio interfaces, sound-card analog front ends, and instrumentation requiring high-resolution audio capture. The wide sampling-rate range also supports applications spanning voice, CD-rate audio, professional multirate conversion, and high-resolution acquisition. For a new design, treat analog and digital grounding, clock jitter, input-level range, and the external anti-alias or acquisition circuitry as system-level requirements. Follow the manufacturer reference circuit for capacitor values and supported input configurations. Confirm that the host controller can generate the required master clock and accept the converter's I2S-compatible output before finalizing the PCB and firmware interface. This page organizes the AK5386VT specifications, interface considerations, application guidance, comparison parameters, and design notes into one engineering-focused reference. It also distinguishes verified drop-in replacements from parts that are only functionally similar, helping designers make PCB and sourcing decisions without confusing equivalent conversion capability with pin compatibility.

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AK5388EQ - 24-Bit 4-Channel 216kHz Audio ADC | AKM
AK5388EQ

AK5388EQ - 24-Bit 4-Channel 216kHz Audio ADC | AKM

The Asahi Kasei Microdevices AK5388EQ is a 24-bit, four-channel sigma-delta audio ADC supporting sampling rates from 8kHz to 216kHz. It achieves 120dB dynamic range, 110dB signal-to-noise-plus-distortion ratio, and 123dB dynamic range in optional mono mode. The device is packaged in a lead-free 44-LQFP measuring 10mm by 10mm with a 0.80mm pitch. An audio ADC is a specialized data converter that converts four analog audio inputs into high-resolution digital samples for processing by a digital signal processor, audio codec, or digital mixing console. Audio ADCs occupy the interface portion of the signal chain between analog microphones, line-level sources, and digital audio equipment. Their channel count, sampling rate, dynamic range, distortion, clock architecture, and output interface determine how accurately the source signal can be captured and preserved. The AK5388EQ provides four simultaneous 24-bit conversion channels at rates up to 216kHz. Its 120dB dynamic range and 110dB S/(N+D) are intended for high-end professional audio systems, while the optional mono mode extends dynamic range to 123dB. I2S-compatible digital output supports integration with digital audio processors. The converter uses AKM's Enhanced Dual Bit modulator architecture and sigma-delta conversion technology to combine high resolution with a digital decimation and filtering stage. The 44-LQFP package provides separate analog, digital, and power connections for careful board partitioning. Operation is specified for commercial temperature screening from -10°C to 70°C. Supply information identifies operating ranges of 3V to 3.6V for one supply domain and 4.75V to 5.25V for another, allowing compatible analog and digital interface rails to be planned around the surrounding audio system. Typical applications include professional recording consoles, multichannel digital mixers, studio monitors, broadcast and mastering equipment, digital audio workstations, and high-resolution multichannel converters. The four-channel architecture is particularly useful when capturing several microphones or stereo line pairs without deploying separate converter packages. PCB implementation should preserve the separation between sensitive analog inputs and digital clock and data paths. Place input and reference-network components close to their associated pins, use a quiet ground-plane strategy, and route the I2S clock and data lines away from analog inputs. The AK5388EQ datasheet pin description and application circuit should govern the final footprint and external component selection. This product page consolidates the converter's core performance, package, operating conditions, application guidance, verified alternatives, and design considerations into an engineering-focused reference. It supports component selection and board planning while keeping detailed implementation decisions anchored to the manufacturer datasheet.

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