ADAU7002ACBZ-RL

Overview

The ADAU7002ACBZ-RL is a stereo audio sample rate converter manufactured by Analog Devices Inc. It performs 64× decimation of a stereo pulse density modulation (PDM) bit stream into 20-bit pulse code modulation (PCM) audio data. The device outputs serial audio in I2S or time division multiplexed (TDM) formats, with configurable TDM slots. Operating on an IOVDD supply of 1.62 V to 3.6 V, it supports output sample rates from 4 kHz to 96 kHz. Key electrical specifications include a dynamic range of 110 dB and an operating current of 0.67 mA at 48 kHz with a 1.8 V supply. The component is housed in an 8-ball WLCSP package.

Feature Summary

• Stereo PDM-to-I2S/TDM conversion with fixed 64× decimation ratio
• Automatic BCLK ratio detection supporting 64× to 512× output sample rates
• Configurable TDM slot placement via CONFIG pin for multi-channel systems
• Low power consumption: 0.67 mA at 48 kHz/1.8 V; shutdown current <1 μA

Applications

• Mobile computing devices
• Portable electronics
• Consumer electronics

Procurement Notes

Verify the specific reel size when ordering. The suffix -RL indicates a 13-inch tape and reel packaging format, whereas the -R7 variant uses a 7-inch reel. Confirm that the application design accommodates the 8-ball WLCSP footprint dimensions of 1.56 mm × 0.76 mm. Ensure the PCB layout adheres to the thermal resistance specifications provided in the datasheet.

Selection Notes

Select this component when interfacing directly with digital microphones providing PDM outputs. It is suitable for systems requiring I2S or TDM interfaces without external DSP processing for decimation. Verify that the host processor can provide the necessary BCLK and LRCLK signals within the 4 kHz to 96 kHz range. Consider the 20-bit internal word length if high-resolution audio processing is required downstream.

Part Context

This part belongs to the ADAU7002 series of audio sample rate converters. The -RL suffix specifically denotes the 13-inch tape and reel packaging option, distinct from the -R7 7-inch reel variant. Both variants share identical electrical characteristics and functionality, differing only in shipping packaging configuration.

Replacement Considerations

The ADAU7002ACBZ-R7 is a direct functional substitute with identical specifications, differing only in the 7-inch tape and reel packaging instead of the 13-inch reel.