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PCM6260-Q1: Do we need shielding twist pair for differential input microphone in automotive application?

Part Number: PCM6260-Q1

Tool/software:

Hi Expert,

My customer is using differential input microphone in automotive application, the cable is long but it's hard to find a GND pin from connector to connect shielding layer.

Do we need shielding twist pair for differential input microphone in automotive application?

Thanks!