ADAU1772BCPZ-R7

Overview

The ADAU1772BCPZ-R7 is a low-power audio codec featuring four single-ended analog inputs and two stereo digital microphone inputs. It integrates a programmable DSP core with biquad filters, limiters, volume controls, and mixing capabilities. The device supports serial port sample rates from 8 kHz to 192 kHz with a 38 μs analog-to-analog latency. It includes full-duplex asynchronous sample rate converters (ASRCs) and a PLL supporting input clocks from 8 MHz to 27 MHz. Power supplies include AVDD/IOVDD of 1.8 V to 3.3 V and DVDD of 1.1 V to 1.8 V. The component utilizes I2C or SPI control interfaces and offers self-boot functionality from an I2C EEPROM.

Feature Summary

• Integrates a programmable audio processing engine for filtering, level control, and signal monitoring.
• Provides four configurable analog inputs and dual stereo digital microphone inputs.
• Features full-duplex asynchronous sample rate converters for flexible clock domain interfacing.
• Supports self-booting from external I2C EEPROM memory.

Applications

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

Procurement Notes

Verify the specific suffix R7 indicates reel packaging when sourcing components. Confirm that the ordering information matches the exact Analog Devices part number ADAU1772BCPZ-R7 to ensure correct package type and quantity specifications. Cross-reference datasheet revision C details against supplier documentation to validate technical parameters.

Selection Notes

Select this component for applications requiring integrated DSP processing alongside high-fidelity audio conversion. Ensure system power rails accommodate the specified 1.8 V to 3.3 V analog supply and 1.1 V to 1.8 V digital core voltage. Verify that the host controller supports either I2C or SPI protocols for configuration and data transfer.

Part Context

This component belongs to the ADAU1772 series of low-power codecs designed for portable audio applications. It combines analog front-end capabilities with a robust digital signal processor to handle complex audio algorithms efficiently. The series is optimized for battery-operated devices where power consumption and latency are critical design constraints.

Replacement Considerations

Consult official Analog Devices documentation for verified substitute part numbers. Do not assume functional equivalence with other audio codecs without validating pinout compatibility and register configurations.

FAQ

What is the maximum serial port sample rate supported by the ADAU1772?

The device supports serial port sample rates ranging from 8 kHz up to 192 kHz.

How does the ADAU1772 handle booting without a separate microcontroller?

It features a self-boot capability that allows it to load firmware directly from an external I2C EEPROM.

What types of analog inputs are available on this codec?

The ADAU1772 provides four single-ended analog inputs that can be configured as either microphone or line inputs.