AK5734VN

ADCs/DACs - Special Purpose Overview

The AK5734VN is a 4-channel audio analog-to-digital converter (ADC) designed for automotive active noise control (ANC) and road noise control (RNC) systems. It features a 24-bit resolution with sampling rates from 8 kHz to 192 kHz, supporting I2S, SPI, and TDM interfaces. The device integrates microphone connection monitoring diagnostics with 100 mV and 12-bit accuracy modes. It offers low latency signal processing of 4.3 [1/fs] and high input impedance of 1.48 MΩ typical. Operating voltage ranges from 2.7 V to 5.5 V, with a working temperature range of -40°C to 105°C in a 48-QFN package.

ADCs/DACs - Special Purpose Feature Summary

• Integrates real-time microphone connection monitoring diagnostics with selectable accuracy modes
• Provides ultra-low latency signal processing optimized for real-time noise cancellation
• Supports high input impedance to simplify external filter and attenuator design

ADCs/DACs - Special Purpose Applications

• Active Noise Control (ANC) systems in vehicles
• Road Noise Control (RNC) systems
• Microphone modules for in-vehicle audio
• In-vehicle amplifier units
• In-vehicle head units

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix and package variant against the official datasheet to ensure compatibility with target PCB footprints and interface requirements. Confirm that the selected component meets the required operating temperature range for automotive environments. Cross-reference the manufacturer's latest product change notices to identify any updates to packaging or material specifications that may affect assembly processes.

ADCs/DACs - Special Purpose Selection Notes

Select this component when designing systems requiring simultaneous multi-microphone input with integrated diagnostic capabilities. The high input impedance reduces the need for buffer amplifiers, simplifying the front-end circuit design. Ensure the host processor supports the required digital interfaces, including I2S, SPI, or TDM, for data acquisition and control register access.

ADCs/DACs - Special Purpose Part Context

The AK5734VN belongs to Asahi Kasei Microdevices' specialized audio ADC family, targeting automotive acoustic management. It complements other channel variants like the AK5736 to provide scalable microphone channel solutions. The device is engineered for harsh automotive environments, ensuring reliable performance in active noise and road noise reduction applications where precision and speed are critical.

ADCs/DACs - Special Purpose Replacement Considerations

No direct public substitute part numbers are confirmed for this specific model.