AK5397EQ - 32-Bit Stereo Audio ADC | Asahi Kasei
N.º da peça: AK5397EQ ✗ Fim de vidaAK5397EQ Visão geral
An audio ADC is a data-converter IC that transforms left and right analog audio signals into digital data for processing, storage, transmission, or playback. The stereo delta-sigma architecture belongs to the broader ADC and data-acquisition IC category. It is optimized for audio-band conversion, where high dynamic range, low distortion, clocking accuracy, and an integrated digital interface are more important than the high conversion rates used by general-purpose instrumentation ADCs.
The AK5397EQ combines 32-bit resolution, stereo conversion, and operation up to 768 kHz in a single device. Its 127 dB dynamic range provides ample headroom for high-fidelity capture, while the I2S interface supports direct connection to audio processors and digital signal processors. According to the manufacturer datasheet, the AK5397 belongs to AKM's VERITA series within the Audio 4 Pro family and uses VELVET SOUND technology. The listed operating-temperature range is -10°C to 70°C.
The AK5397EQ operates from a 5 V nominal analog supply and a 3 V to 3.6 V digital supply. Separate analog and digital supply domains help control coupling between sensitive conversion circuitry and digital switching activity. The part uses an I2S output, supports a dual-channel conversion topology, and is specified for audio frequencies up to 192 kHz, with a listed 768 kHz sampling-rate capability. Exact clock architecture, digital levels, and channel timing must be implemented according to the manufacturer pin description and timing diagrams.
Typical applications include professional digital recording consoles, high-resolution stereo capture, premium home-theater equipment, studio monitors, digital mixers, and broadcast audio subsystems. Its combination of 32-bit resolution, 127 dB dynamic range, and 768 kHz capability is particularly useful when the design must preserve substantial headroom for mastering, post-processing, or future conversion stages.
Design the AK5397EQ with short, quiet analog input paths, a low-noise reference arrangement, and careful separation between analog and digital return currents. Place decoupling capacitors close to the supply pins and preserve the recommended clock and I2S layout. Because the converter is offered in an obsolete lifecycle state, verify current sourcing status and obtain a written quotation before committing it to a new production design.
This page consolidates the device's electrical identity, package information, application guidance, design cautions, and verified sourcing context. It also distinguishes documented capabilities from parameters that engineers must confirm in the manufacturer datasheet, helping purchasing, hardware, and signal-integrity teams evaluate the AK5397EQ consistently.
Alternativas drop-in para AK5397EQ — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Nenhuma alternativa drop-in disponível para este produto.
Solicitar alternativasAK5397EQ Classificações máximas e características elétricas
| Converter Type | 32-bit stereo delta-sigma audio ADC |
| Resolução | 32 bit |
| Number of Channels | 2 channels |
| Dynamic Range | 127 dB |
| Standard Sampling Rate | 192 kS/s |
| Maximum Listed Sampling Rate | 768 kS/s |
| Digital Audio Interface | I2S |
| Analog Supply Voltage | 5 V nominal |
| Digital Supply Voltage Range | 3 V to 3.6 V |
| Faixa de temperatura de operação | -10°C to +70°C |
| Encapsulamento | 44-pin LQFP, 10 mm x 10 mm |
| Tipo de montagem | Surface mount |
| Product Series | VERITA series, Audio 4 Pro family |
| Converter Technology | VELVET SOUND technology |
| Status RoHS | Compliant |
Guia de Configuração de Pinos do AK5397EQ 44-pin lqfp, 10 mm x 10 mm
Configuração de pinos para AK5397EQ (pacote 44-pin lqfp, 10 mm x 10 mm). Este componente analógico possui pinos de entrada, saída e alimentação. Consulte o datasheet do fabricante para configurações de offset null, compensação e pino de enable. Ideal para circuitos de condicionamento de sinal e amplificadores.
Nenhum dado detalhado de pinagem disponível para AK5397EQ.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
AK5397EQ é adequado para 6 aplicaçãos: Professional Digital Recording Console, High-Resolution Studio Monitor, Premium Home-Theater Processor, Digital Audio Mixer, Broadcast Audio Capture, Audiophile USB Listening System.
Professional Digital Recording Console
The AK5397EQ fits a professional recording console because it combines 32-bit stereo conversion, 127 dB dynamic range, and operation up to 768 kS/s for high-resolution capture. Place the converter on an analog input card, connect its I2S output to the console's digital processing engine, and operate the analog and digital domains from their specified 5 V and 3 V to 3.6 V rails. The high dynamic range preserves low-level detail during multitrack recording, while the dedicated stereo converter simplifies channel architecture compared with a multiplexed general-purpose ADC.
Recomendado
High-Resolution Studio Monitor
The AK5397EQ is appropriate for a studio monitor controller that converts balanced analog mixer or preamp outputs into a high-resolution digital stream. Its 32-bit resolution and 127 dB dynamic range provide ample headroom for program material, while the I2S interface can feed a digital signal processor or active crossover stage. The monitor design should preserve the converter's analog signal path, provide a quiet reference arrangement, and keep the 768 kS/s capability available only when the clock and downstream processing chain support it.
Recomendado
Premium Home-Theater Processor
The AK5397EQ can serve as the stereo ADC in a premium home-theater processor that accepts balanced analog sources and routes them into digital surround processing. Its 127 dB dynamic range and 32-bit conversion support low-level movie and music signals, while the I2S interface connects cleanly to an audio processor. Because the device is obsolete, a theater platform should secure supply before layout release, and the power design should isolate its 5 V analog rail from switching converter and digital processor noise.
Recomendado
Digital Audio Mixer
The AK5397EQ is suitable for each stereo input channel of a digital mixer because it provides two-channel conversion, 32-bit resolution, and a direct I2S digital output. A multi-channel mixer can use multiple converter instances feeding a common digital signal processor, simplifying synchronization and format conversion while preserving consistent conversion characteristics. The implementation should use a low-jitter master clock, matched input scaling, and separate analog and digital return paths to prevent converter activity from corrupting sensitive mix-bus signals.
Recomendado
Broadcast Audio Capture
The AK5397EQ can support broadcast and mastering capture subsystems that require stereo conversion with substantial dynamic range and flexible sampling capability. The 192 kS/s and 768 kS/s operating modes are useful for high-resolution production workflows, while the 127 dB specification gives converters and mastering engineers additional signal headroom. A broadcast installation should use a stable reference clock, carefully balanced analog inputs, and supply filtering that remains effective across the full 3 V to 3.6 V digital and nominal 5 V analog rails.
Recomendado
Audiophile USB Listening System
The AK5397EQ is suited to the analog-to-digital stage of a high-resolution audiophile listening system when the architecture requires 32-bit stereo conversion and a native I2S connection to a digital audio interface. Its 127 dB dynamic range supports playback of quiet, wide-dynamic-range recordings, while operation up to 768 kS/s can serve asynchronous high-resolution workflows. The front end still needs low-noise amplification, precision input attenuation, a clean reference, and short converter inputs to preserve the performance offered by the ADC.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para AK5397EQ — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto |
|---|---|
| Package | 44-pin LQFP, 10 mm x 10 mm |
| Brand | Asahi Kasei Microdevices |
| Converter Type | 32-bit stereo delta-sigma audio ADC |
| Resolution | 32 bit |
| Channel Count | 2 channels |
| Dynamic Range | 127 dB |
| Maximum Sampling Rate | 768 kS/s |
| Digital Interface | I2S |
| Analog Supply | 5 V nominal |
| Digital Supply | 3 V to 3.6 V |
| Operating Temperature | -10°C to +70°C |
| RoHS Status | Compliant |
Principais diferenciais
- Dedicated high-resolution stereo conversion (vs PCM1808PW)
- Flagship VERITA-series conversion technology (vs PCM1725DR)
- Native high-speed I2S conversion (vs WM8725CGED/R)
Notas de projeto
Route the AK5397EQ analog inputs, reference connections, and supply decoupling as short, quiet nets, and keep the I2S clock and data traces away from the most sensitive analog input paths. Place the required input and bypass capacitors close to their associated pins, with their ground returns joining the appropriate analog or digital return plane through a controlled connection point. Follow the reference layout in the manufacturer datasheet when assigning the 44 LQFP footprint.
Treat the nominal 5 V analog rail and 3 V to 3.6 V digital rail as separate design domains. Decouple each rail directly at the appropriate device pins and avoid routing converter return current beneath the analog input or reference pins. Verify the recommended capacitor values, supply sequencing, and absolute maximum limits in the manufacturer datasheet. An analog regulator should be selected for low noise and appropriate stability with the required output and input capacitors.
Do not treat the obsolete lifecycle status as proof that every remaining unit is original, unused, or immediately deliverable. Confirm the exact AK5397EQ suffix, date code, storage condition, inspection history, quantity, and traceability through the Request a Quote process. Also avoid selecting a related AK5397-family MPN solely from its base number; verify the complete ordering information and compare every pin function before treating it as a drop-in replacement.
Use a low-jitter clock source and follow the manufacturer timing diagrams for I2S data, bit clock, and word-select behavior. Confirm that the audio processor supports the selected master or slave-clock arrangement and word alignment. Avoid adding long test pads or breakout branches to the digital bus, and validate the complete clock-to-data timing at the intended 192 kS/s or 768 kS/s operating mode with suitable measurement equipment.
Informações de conformidade
The product listing identifies the AK5397EQ as RoHS compliant. This is an audio ADC and is not an automotive-qualified device.
