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ADAU1772 with four microphones?

Question asked by ccyao on Dec 6, 2012
Latest reply on Dec 17, 2012 by BillJ

We want to use an ADAU1772 and four omnidirectional MEMS micropuhones

 

to create a breamforming application.

 

In ADAU1772 datasheet figure67, AIN2 and AIN3 are configured as a stereo line-in.

 

My question is, are those four analog input (AIN0-AIN3) completely the same?

 

As shown below, can AIN2 and AIN3 be configured as microphone input with micbias?

 

4.PNG

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