Overview

Features and Benefits

  • 2 channels of PDM audio inputs from digital microphones
  • 64× decimation ratio of PDM to PCM audio data
  • 24-bit resolution to support high sound pressure level (SPL) microphones
  • 126 dB A-weighted SNR
  • 4 kHz to 96 kHz output sampling rate
  • Bit clock rates of 64×, 128×, 192×, 256×, 384×, or 512× the output sampling rate
  • Automatic PDM clock generation
  • Automatic power-down when BCLK is removed
  • 0.36 mA DVDD operating current at 48 kHz sampling rate and 1.8 V supply
  • Slave I2S or TDM output interface
  • Up to TDM-16 supported
  • Configurable TDM slots
  • I/O supply voltage from 1.70 V to 3.63 V
  • DVDD core supply voltage from 1.10 V to 1.98 V
  • 4 μA typical DVDD shutdown current
  • 9-ball, 1.26 mm × 1.26 mm, 0.4 mm pitch WLCSP
  • Power-on reset

Product Details

The ADAU7112 converts stereo pulse density modulation (PDM) bitstreams into one pulse code modulation (PCM) output stream. The source for the PDM data can be two microphones or other PDM sources. The PCM audio data is output on a serial audio interface port in either inter-IC serial (I2S) or time domain multiplexed (TDM) format.

The ADAU7112 is specified over the commercial temperature range (−40°C to +85°C). The ADAU7112 is available in a halide-free, 9-ball, 1.26 mm × 1.26 mm, 0.4 mm pitch, wafer level chip scale package (WLCSP).

Applications 

  • Mobile computing
  • Portable electronics
  • Consumer electronics
  • Professional electronics

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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Evaluation Boards Pricing displayed is based on 1-piece.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.