ADAU1772BCPZ-RL

Overview

The ADAU1772BCPZ-RL is a low-power audio codec featuring four analog-to-digital converters and two digital-to-analog converters. It integrates a programmable audio processing engine supporting sample rates from 8 kHz to 192 kHz with a 38 μs analog-to-analog latency. The device provides 102 dB SNR for the ADC path and 107 dB combined SNR for the DAC path. It operates on supply voltages ranging from 1.8 V to 3.3 V for analog and I/O, and 1.1 V to 1.8 V for the DSP core. Control interfaces include I2C and SPI, with self-boot capability from an external EEPROM.

Feature Summary

• Integrates a programmable audio processor with biquad filters, limiters, volume controls, and mixing capabilities.
• Includes full-duplex asynchronous sample rate converters (ASRCs) for flexible clock domain interfacing.
• Supports dual stereo digital microphone inputs alongside configurable single-ended analog line or microphone inputs.
• Features a built-in PLL capable of accepting input clocks between 8 MHz and 27 MHz.

Applications

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

Procurement Notes

Verify component authenticity by cross-referencing the manufacturer part number ADAU1772BCPZ-RL with official Analog Devices documentation. Confirm that the package type matches the specified LFCSP-40 configuration. Ensure that the ordering suffix corresponds to the reel packaging format indicated in the datasheet. Validate regulatory compliance status through the manufacturer's official channels prior to integration.

Selection Notes

Select this component when designing systems requiring integrated low-latency noise cancellation and high-fidelity audio conversion. The inclusion of hardware-accelerated DSP functions reduces host processor load. Verify that the required power supply rails align with the specified 1.8 V to 3.3 V ranges. Consider the available multipurpose pins for additional control signals if system complexity increases.

Part Context

This component belongs to the ADAU1772 series of audio codecs manufactured by Analog Devices Inc. The series is designed for portable audio applications demanding high performance within strict power constraints. The specific model denotes the standard commercial grade variant packaged in a lead frame chip scale package suitable for surface mount assembly.

Replacement Considerations

Direct functional replacements are not explicitly listed in the provided documentation. Evaluate other members of the ADAU1772 family or similar Analog Devices CODECs based on pin compatibility and register mapping. Verify that alternative components support the required 24-bit resolution and 192 kHz sampling rates.

FAQ

What is the analog-to-analog latency of the ADAU1772?

The device exhibits a total analog-to-analog latency of 38 microseconds.

Can the ADAU1772 operate without an external microcontroller?

Yes, it supports self-booting from an external I2C EEPROM, allowing it to initialize its internal registers automatically upon power-up.

What types of microphone inputs does the codec support?

It supports four single-ended analog inputs configurable as microphone or line inputs, as well as dual stereo digital microphone inputs.