ADAU1787BCBZRL7

Overview

The ADAU1787BCBZRL7 is a low-power audio codec featuring four analog-to-digital converters (ADCs) and two digital-to-analog converters (DACs), integrated with dual audio digital signal processors. It supports sample rates up to 768 kHz and delivers 96 dB SNR for the ADC path and 105 dB combined SNR for the DAC path. The device incorporates a programmable FastDSP engine and a 28-bit SigmaDSP core operating at up to 50 MIPS. Analog inputs include four single-ended channels and eight digital microphone inputs, while outputs consist of two differential channels. Power supplies are specified as AVDD at 1.8 V typical, IOVDD from 1.1 V to 1.98 V, and DVDD at 0.9 V typical.

Feature Summary

• Dual-core architecture combining a programmable FastDSP for real-time processing and a 28-bit SigmaDSP for complex audio algorithms.
• Optimized low-latency signal path suitable for noise-canceling applications, achieving 5 μs group delay with FastDSP bypass.
• Integrated asynchronous sample rate converters (ASRCs) and flexible serial audio ports supporting I²S, left-justified, and TDM formats.

Applications

• Noise cancelling handsets, headsets, and headphones
• Bluetooth ANC handsets, headsets, and headphones
• Personal navigation devices
• Digital still and video cameras
• Musical instrument effect processors

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm packaging details and reel specifications. Ensure compatibility with standard surface-mount assembly processes for WLCSP packages. Confirm that the component meets current environmental compliance standards required for your manufacturing region before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring high-performance active noise cancellation with minimal latency. The integrated DSP cores eliminate the need for external processing units, reducing board space. Verify that the system power budget aligns with the typical consumption figures provided in the datasheet for the intended operational mode.

Part Context

This part belongs to the ADAU1787 series of audio codecs designed by Analog Devices. It is specifically engineered for portable audio applications where size and power efficiency are critical constraints. The device integrates multiple conversion stages and processing engines into a single compact package to simplify system design.

Replacement Considerations

Consult the official Analog Devices product selector guide for verified alternative part numbers within the same family or compatible series. Cross-referencing should be limited to components explicitly listed as interchangeable in manufacturer documentation.

FAQ

What is the maximum sample rate supported by the ADAU1787?

The device supports serial port fSYNC frequencies ranging from 8 kHz up to 768 kHz.

How many digital microphone inputs does the ADAU1787 provide?

The ADAU1787 includes eight digital microphone inputs in addition to four single-ended analog inputs.

What is the group delay for analog input to analog output?

The group delay is 5 μs when operating at a sample rate of 768 kHz with the FastDSP bypass enabled.