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TLV320AIC3120EVM-U: TLV320AIC3120EVM-U External Mic Interacing

Part Number: TLV320AIC3120EVM-U

In case we want to interface an external microphone with Evalboard

There are 2 approaches

approach 1: Power the mic separately and connect the mic Line to the left of C18. 

approach 2: Put jumper on W3 and use mic bias to bias/power the mic pin.

Which option is preferred/suitable and why?