ADAU7002 Datasheet, PDF (1/16 Pages) Analog Devices – Stereo PDM-to-I2S or TDM Conversion IC

Data Sheet
Stereo PDM-to-I²S or
TDM Conversion IC
ADAU7002
FEATURES
64× decimation of a stereo pulse density modulation (PDM)
bit stream to pulse code modulation (PCM) audio data
Slave I²S or time division multiplexed (TDM) output interface
Configurable TDM slots
I/O supply operation: 1.62 V to 3.6 V
64× output sample rate PDM clock
64×/128×/192×/256×/384×/512× output sample rate BCLK
Automatic BCLK ratio detection
Output sample rate: 4 kHz to 96 kHz
Automatic PDM CLK drive at 64× the sample rate
Automatic power down with BCLK removal
0.67 mA operating current at 48 kHz and 1.8 V IOVDD supply
Shutdown current: <1 µA
8-ball, 1.56 mm × 0.76 mm, 0.4 mm pitch WLCSP
Power-on reset
GENERAL DESCRIPTION
The ADAU7002 converts a stereo PDM bit stream into a PCM
output. 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 I²S or TDM format.
The ADAU7002 is specified over the commercial temperature
range (−40°C to +85°C). It is available in a halide-free, 8-ball,
1.56 mm × 0.76 mm, wafer level chip scale package (WLCSP).
APPLICATIONS
Mobile computing
Portable electronics
Consumer electronics
FUNCTIONAL BLOCK DIAGRAM
1.62V TO 3.6V
PDM_CLK
PDM_DAT
CONFIG GND
IOVDD
PDM
INPUT
PORT
DIGITAL
DECIMATION
FILTERING
I²S
OUTPUT
PORT
Figure 1.
ADAU7002
BCLK
LRCLK
SDATA
Rev. 0
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