ADAU1381BCPZ-RL

Overview

The ADAU1381BCPZ-RL is a low-power, 24-bit stereo audio codec manufactured by Analog Devices Inc. It features integrated analog-to-digital and digital-to-analog converters supporting sampling rates from 8 kHz to 96 kHz. The device includes a built-in sound engine for audio processing, a 400 mW speaker amplifier, and dual-band automatic level control. It operates on supply voltages ranging from 1.8 V to 3.65 V and utilizes serial interfaces including I2C or SPI for control. The component is housed in a 32-lead, 5 mm × 5 mm LFCSP package.

Feature Summary

• Integrated configurable sound engine providing enhanced recording and playback processing capabilities.
• Built-in wind noise detection with autofiltering and dual-band automatic level control.
• Supports both pseudo-differential analog microphone inputs and optional stereo digital PDM microphone inputs.
• Includes a dedicated mono mixer and software-controllable clickless mute functionality.

Applications

• Digital still cameras
• Digital video cameras

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and reel specifications. Confirm that the component meets required environmental standards such as RoHS compliance before integration into final designs. Ensure compatibility with existing power supply rails and clock generation circuits during the procurement phase.

Selection Notes

Select this component for applications requiring high-fidelity stereo audio conversion with integrated signal processing. Consider the available packaging options, specifically the LFCSP variant, based on board space constraints. Evaluate the power consumption characteristics under different operating modes to ensure alignment with battery life requirements for portable devices.

Part Context

This part belongs to the ADAU1381 series of low-noise stereo codecs designed for mobile and consumer electronics. It integrates advanced audio processing features typically found in separate components, reducing system complexity. The device is optimized for use in compact handheld devices where power efficiency and audio quality are critical design parameters.

Replacement Considerations

Consult official Analog Devices documentation for confirmed substitute part numbers. Verify pinout compatibility and electrical specifications before considering any alternative components. Ensure that any replacement maintains the required interface protocols and performance metrics.

FAQ

What types of microphone inputs does the ADAU1381 support?

The device supports stereo pseudo-differential analog microphone inputs and optional stereo digital microphone pulse-density modulation (PDM) inputs.

How is the audio processing handled within the ADAU1381?

Audio processing is managed by a built-in configurable sound engine that includes features like wind noise detection, autofiltering, dual-band automatic level control, and a 6-band equalizer.

What is the maximum output power of the integrated speaker amplifier?

The integrated speaker amplifier can deliver up to 400 mW into an 8 Ω load.