How to change PDM Module's sampling rate and its effect on power consumption

[Jong yoon lee]

Hello,

I am building an application that doesn't need high-frequency microphone data.

I want to sample the PDM at 4K. It is possible to do so by changing the frequency.

If I can, to what value do I need to change the frequency to ( or what is the equation I need to use) and what kind of effect will it have on the power consumption.

Thank you in advance

[haakonsh]

Hey John,

The PDM module is fixed/constant at 16KHz sample rate with a 16-bit sample width. 

Cheers,

Håkon.