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ADMP421ACEZ-RL Fiches technique(PDF) 10 Page - Analog Devices

No de pièce ADMP421ACEZ-RL
Description  Omnidirectional Microphone with Bottom Port and Digital Output
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Site Internet  http://www.analog.com
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ADMP421ACEZ-RL Fiches technique(HTML) 10 Page - Analog Devices

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ADMP421
Rev. 0 | Page 10 of 16
INTERFACING WITH ANALOG DEVICES CODECS
Analog Devices ADAU1361 and ADAU1761 codecs feature
digital microphone inputs that support the ADMP421 PDM
output data format. See the connection diagrams shown in
Figure 1
2 and Figure 13, and refer to the ADMP421 AN-1003
Application Note and the codecs’ respective data sheets for
more details on the digital microphone interface.
JDFUNC[1:0]
DIGITAL MICROPHONE
INTERFACE
LEFT
CHANNEL
RIGHT
CHANNEL
TO JACK
DETECTION
CIRCUIT
JACKDET/MICIN
RIGHT
ADC
LEFT
ADC
DECIMATORS
R19: ADC CONTROL
INSEL
R2: DIGITAL MICROPHONE/
JACK DETECTION
CONTROL
Figure 12. Digital Microphone Signal Routing Block Diagram
ADMP421
DIGITAL MICROPHONE
CLK
BCLK
LINP
CM
VDD
L/R SELECT
GND
DATA
0.1µF
ADMP421
DIGITAL MICROPHONE
CLK
BCLK
VDD
L/R SELECT
GND
DATA
0.1µF
MICBIAS
LINN
RINN
RINP
JACKDET/MICIN
ADAU1361
OR
ADAU1761
Figure 13. ADAU1361 and ADAU1761 Stereo Interface Block Diagram


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