AK5374EN - 24-Bit 48kHz USB Audio ADC | Asahi Kasei
N.º da peça: AK5374EN ✗ Fim de vidaAK5374EN Visão geral
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.
Alternativas drop-in para AK5374EN — 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 alternativasAK5374EN Classificações máximas e características elétricas
| ADC Resolution | 24 bit |
| Taxa de amostragem | 48 kHz |
| Audio Channels | 2 channels, stereo |
| Interface | USB 2.0 |
| Tensão de alimentação | 3 V to 3.6 V |
| Analog Input Voltage | 0 V to 1.4 V |
| Integrated Functions | USB serial interface engine, USB transceiver, Audio Class processing block, endpoints, and 24-bit stereo ADC |
| Package Type | QFN-36 |
| Package Dimensions | 5 mm x 5 mm |
| Package Pin Pitch | 0.40 mm |
| Número de pinos | 36 pins |
| Package Material | Plastic, halogen-free |
| Tipo de montagem | Surface mount |
| Screening Level | Commercial |
| Temperatura de operação | -10°C to +70°C |
| Integrated USB Transceiver | Yes |
| Audio Class Processing | Yes |
| USB Endpoints | Integrated |
Guia de Configuração de Pinos do AK5374EN plastic, halogen-free
Configuração de pinos para AK5374EN (pacote plastic, halogen-free). 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 AK5374EN.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
AK5374EN é adequado para 6 aplicaçãos: USB Desktop Microphone, USB Headset Audio Interface, Portable Digital Audio Recorder, Conference Audio Terminal, Industrial Audio Capture Adapter, USB Streaming Audio Interface.
USB Desktop Microphone
The AK5374EN fits a USB desktop microphone because it combines stereo 24-bit conversion with a USB 2.0 interface in one 5 mm by 5 mm package. The microphone capsule or preamplifier can drive the 0 V to 1.4 V analog input range after suitable attenuation and biasing, while the integrated USB transceiver carries the audio stream directly to a host. At a maximum 48 kHz sampling rate, the converter is appropriate for voice conferencing, streaming, and recording. Designers should keep the analog input path short, use a low-noise reference supply, and follow the manufacturer datasheet for USB differential routing and decoupling.
Recomendado
USB Headset Audio Interface
For a USB headset interface, the AK5374EN provides two analog capture channels, a 24-bit ADC, and an integrated USB 2.0 audio path without requiring a separate USB controller. Its 48 kHz maximum sampling rate supports speech, conferencing, and general digital-recording workloads. The 3 V to 3.6 V supply range is compatible with a regulated 3.3 V rail, while the analog input limit of 0 V to 1.4 V requires microphone biasing or line-input attenuation. Compact board space is supported by the 36-pin QFN package, although exposed-pad soldering, USB return-current control, and analog grounding remain critical.
Recomendado
Portable Digital Audio Recorder
The AK5374EN can serve as the capture front end in a portable digital recorder that records stereo audio over USB. Its integrated Audio Class processing, endpoints, USB serial interface engine, and transceiver reduce the number of discrete blocks in a compact portable design. Conversion is performed at up to 24 bits and 48 kHz, which is appropriate for voice memos, rehearsals, interviews, and field monitoring when host-side storage handles the higher-resolution recording format. The commercial temperature range of -10°C to +70°C covers many indoor and controlled portable applications, but the analog front end must protect the 0 V to 1.4 V input range.
Recomendado
Conference Audio Terminal
The AK5374EN is appropriate for a conference terminal requiring a compact, host-connected stereo audio input. Its integrated USB interface allows the converter to appear as a USB audio device while the 24-bit ADC captures both channels at rates up to 48 kHz. This combination supports voice terminals, speakerphone systems, and meeting-room accessories where a separate USB interface controller would increase board area. Use the 0 V to 1.4 V analog range to set microphone or line-level gain, and isolate USB routing from the analog input return path to prevent clock or switching-related interference.
Recomendado
Industrial Audio Capture Adapter
The AK5374EN can be used in a controlled industrial audio-capture adapter where a compact USB interface is needed close to the analog sensor or conditioned line input. The stereo 24-bit conversion and 48 kHz maximum rate are suitable for monitoring acoustic, vibration, or equipment-audio signals after appropriate scaling into the 0 V to 1.4 V input range. Its -10°C to +70°C commercial specification suits controlled indoor equipment, but it should not be assumed suitable for extended outdoor temperature ranges. Shielded analog routing, grounded enclosure interfaces, stable 3.3 V supply distribution, and careful USB impedance implementation are essential for reliable field operation.
Recomendado
USB Streaming Audio Interface
The AK5374EN is well suited to a compact USB streaming audio interface for voice, instrument monitoring, or broadcast-adjacent applications operating at 48 kHz. Integrating the ADC and USB interface engine reduces the board area needed for a two-channel conversion path, while the Audio Class block simplifies host-side USB audio handling. Analog inputs must be conditioned to remain within 0 V to 1.4 V, and the 3.3 V supply must remain stable. For high-fidelity capture, minimize connector-to-ADC trace length, maintain a quiet analog ground return, and apply the USB layout guidance in the manufacturer datasheet.
Recomendado
Dados de referência de engenharia para AK5374EN — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto |
|---|---|
| Product Type | Stereo USB audio ADC |
| ADC Resolution | 24 bit |
| Sampling Rate | 48 kHz |
| Audio Channels | 2 channels, stereo |
| Digital Interface | USB 2.0 |
| Supply Voltage | 3 V to 3.6 V |
| Analog Input Voltage | 0 V to 1.4 V |
| Package | QFN-36, 5 mm x 5 mm, 0.40 mm pitch |
| Brand | Asahi Kasei Microdevices |
| Operating Temperature | -10°C to +70°C |
Principais diferenciais
- Integrated USB audio conversion (vs Generic standalone 24-bit stereo ADC)
- Compact package for USB audio products (vs Larger multi-IC USB audio architecture)
- Dedicated USB serial interface engine (vs Generic ADC without integrated USB)
Notas de projeto
Route the two analog inputs as short, matched paths from their connectors or conditioning network to the QFN input terminals. Keep the 0 V to 1.4 V input range centered on the usable signal range, place input filtering close to the device, and avoid running USB differential traces beneath the analog section. The manufacturer datasheet's application circuit and pin-description drawing should be treated as the authority for the final land pattern, exposed-pad connection, and USB interface geometry.
Use a stable supply within the specified 3 V to 3.6 V range and place the required bypass capacitors directly beside the supply and ground pins. Keep supply and USB return currents away from the analog input reference path. Decoupling values, sequencing requirements, and the exposed thermal or electrical pad connection should be copied from the manufacturer datasheet; values not stated there require design verification before schematic release.
Treat the analog input reference and the USB return path as separate return-current concerns until system-level testing demonstrates otherwise. A common split-ground topology can be effective only when each section has a defined return and the interface is checked for ground-potential errors. Use the USB differential pair geometry and controlled-impedance rules from the manufacturer datasheet, and test sensitivity to conducted USB noise with realistic cables and host equipment.
Informações de conformidade
The package information identifies the QFN-36 device as halogen-free and commercial grade. RoHS, REACH, AEC-Q100, lead-free, and conflict-minerals status are unknown.
