ADAU7112

RECOMMENDED FOR NEW DESIGNS

Stereo PDM to I2S/TDM Converter

Part Models
2
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Part Details

  • 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
ADAU7112
Stereo PDM to I2S/TDM Converter
ADAU7112 Functional Block Diagram ADAU7112 Pin Configuration
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Evaluation Kits

eval board
EVAL-ADAU7112

ADAU7112 Evaluation Board

Product Details

This user guide describes the design and setup of the EVALADAU7112Z evaluation board, which can be configured to operate in several different hardware modes. An I2S/time division multiplexing (TDM) serial interface is accessible via header pins spaced at 0.1 inches. Pulse density modulation (PDM) data and the clock interface are available on these headers.

The evaluation board can be powered in several ways:

  • External 5 V dc power supply and ground using the J14 header
  • External 5 V power supply (not included) using the J8 power connector
  • Directly powered using external power supplies that bypass the on-board regulators

On-board regulators derive supplies of 3.3 V, 1.8 V, and 1.2 V. Current measurements of the ADAU7112 can be performed with the supplied header pins.

The evaluation board allows demonstration and performance testing of the features of the ADAU7112.

For full details, see the ADAU7112 data sheet, which must be consulted in conjunction with this user guide when using the evaluation board.

EVAL-ADAU7112
ADAU7112 Evaluation Board
EVAL-ADU7112ANGLE-web EVAL-ADU7112TOP-web EVAL-ADU7112BOTTOM-web

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