ADAU1797ABCBZRL

Overview

The ADAU1797ABCBZRL is a high-performance audio codec featuring integrated HiFi 3z and FastDSP cores. It provides three low-power 24-bit ADC channels, ten digital microphone inputs, two PDM output channels, and one mono 24-bit DAC channel with a Class-D amplifier. The device supports sample rates up to 768kHz with a group delay of 5μs in bypass mode. Key electrical parameters include an ADC SNR of 104dB and a DAC SNR of 113dB. It operates on a single 1.8V supply with integrated LDO or switch-cap regulators and utilizes a 77-ball WLCSP package.

Feature Summary

• Integrates Tensilica HiFi 3z DSP and low-latency FastDSP engine for noise cancellation and voice processing
• Supports flexible analog inputs via PGA and direct ADC modes with differential or single-ended configurations
• Includes dual asynchronous sample rate converters (ASRCs) for clock domain synchronization
• Features master QSPI interface for self-boot from external flash memory

Applications

• True wireless stereo (TWS) active noise cancellation headphones
• Over-ear stereo ANC headphones
• VR and AR headsets and wearable devices
• Hearing assist and personal sound amplification (PSAP) devices
• Soundbar and smart speaker systems

Procurement Notes

Verify the specific suffix 'BCBZRL' against the manufacturer's current datasheet revision to confirm packaging details and availability status. Ensure that the ordering information matches the exact component marking required for your bill of materials. Cross-reference the RoHS compliance documentation provided by Analog Devices Inc. prior to finalizing procurement orders.

Selection Notes

Select this component when applications require integrated DSP processing alongside high-fidelity audio conversion in a compact form factor. The device is suitable for designs needing low latency and support for multiple digital microphone arrays. Consider the power consumption profiles of the HiFi 3z core at varying clock speeds to optimize battery life for portable devices.

Part Context

This part belongs to the ADAU1797A series of audio codecs designed for premium audio applications. It combines analog front-end capabilities with advanced digital signal processing cores. The integration allows for system-level simplification by reducing the need for external host processors or separate audio DSPs in many consumer electronics designs.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.