ADAU1372BCPZ

Overview

The ADAU1372BCPZ is a low latency, low power audio codec featuring four single-ended analog inputs and dual stereo digital microphone inputs. It incorporates four 24-bit ADCs and two 24-bit DACs with asynchronous sample rate converters (ASRCs). The device supports serial port sample rates from 8 kHz to 192 kHz and includes programmable gain amplifiers (PGAs) for flexible input configuration. Analog and digital I/O operate at 1.8 V to 3.3 V, while the core digital supply is 1.1 V. Typical power consumption is 15.5 mW at 192 kHz. It offers 102 dB SNR through the PGA and ADC, and 107 dB dynamic range through the DAC and headphone output.

Feature Summary

• Integrates full-duplex asynchronous sample rate converters (ASRCs) for flexible clock domain interfacing.
• Features built-in programmable gain amplifiers (PGAs) and microphone bias generators for direct sensor connection.
• Supports multiple control interfaces including I2C and SPI for system integration flexibility.
• Includes multipurpose pins configurable for digital microphone inputs, mute functions, and push-button volume controls.

Applications

• Handsets, headsets, and headphones
• Bluetooth handsets, headsets, and headphones
• Personal navigation devices
• Digital still and video cameras

Procurement Notes

Verify the specific suffix 'CPZ' corresponds to the LFCSP-40 tray package when sourcing. Confirm that the operating voltage requirements match the target system's AVDD, IOVDD, and DVDD rails. Ensure ESD precautions are observed during handling due to the exposed pad thermal design.

Selection Notes

Select this component for applications requiring low latency audio processing with high channel count. Verify compatibility with the host processor's serial interface timing. Check if the integrated PLL range of 8 MHz to 27 MHz accommodates the available master clock sources. Evaluate power budget constraints against the typical 15.5 mW consumption figure.

Part Context

The ADAU1372BCPZ belongs to the ADAU1372 series of low power audio codecs manufactured by Analog Devices Inc. It is designed specifically for portable audio applications where size and power efficiency are critical. The part integrates signal routing and control logic to minimize external component count.

Replacement Considerations

EVAL-ADAU1372Z is an evaluation board for this device, not a functional replacement. No direct pin-compatible substitute part numbers are documented in the provided source material.

FAQ

What is the supported frequency range for the crystal oscillator?

The crystal amplifier supports a frequency range from 8 MHz to 27 MHz.

How many digital microphone inputs does the ADAU1372 support?

The device features dual stereo digital microphone inputs, which can be configured using the multipurpose pins.

What is the maximum serial port sample rate?

The serial port supports sample rates up to 192 kHz.