ADAU1850BCBZRL

Overview

The ADAU1850BCBZRL is a low-power audio codec featuring three analog-to-digital converters and one digital-to-analog converter, packaged in a 28-ball WLCSP. It integrates a programmable FastDSP engine supporting up to 768 kHz sample rates with 24-bit resolution. The device provides 106 dB SNR for ADCs and 110 dB SNR for the DAC. Analog supplies operate at 1.8 V, while digital I/O supports 1.62 V to 3.63 V. It includes an internal RC oscillator, PLL, and ASRC channels.

Feature Summary

• Integrates a programmable FastDSP audio processing engine with a double precision MAC engine for equalization.
• Features three configurable analog inputs supporting differential or single-ended microphone and line connections.
• Provides a differential analog output configurable as either a line output or headphone driver.
• Supports serial audio interfaces including I2S, left justified, and TDM formats with flexible routing.

Applications

• Noise canceling handsets, headsets, and headphones
• Bluetooth active noise canceling (ANC) devices
• Personal navigation devices
• Digital still and video cameras
• Smartphones

Procurement Notes

Verify the specific suffix BCBZRL against the manufacturer's ordering guide to confirm package type and reel specifications. Ensure compatibility with the EVAL-ADAU1850EBZ evaluation board for initial system integration and functional testing before final deployment.

Selection Notes

Select this component when designing systems requiring multiple microphone inputs and integrated DSP for noise cancellation. Verify that the required serial interface protocols match the supported I2C, SPI, or UART options. Confirm power supply constraints align with the specified 1.8 V analog and 1.62 V to 3.63 V digital voltage ranges.

Part Context

This part belongs to the Analog Devices ADAU1850 series of low-power codecs. It is designed for portable audio applications where space and power efficiency are critical. The WLCSP package allows for compact PCB layouts suitable for mobile devices and wearable technology.

Replacement Considerations

Consult the official datasheet for pin-compatible alternatives within the same product family. Verify that any substitute maintains the required FastDSP capabilities and analog performance metrics for noise-canceling applications.

FAQ

What is the maximum sample rate supported by the ADAU1850?

The device supports serial port sample rates from 8 kHz up to 768 kHz.

How many analog inputs does the ADAU1850 provide?

It provides three analog inputs: two differential inputs (ADC0 and ADC1) and one single-ended input (ADC2).

What control interfaces are available for configuration?

The ADAU1850 supports I2C, SPI, and UART interfaces for control and communication.