MEMS audio sensor MP23DB01HP Values/Units

[FilipeLourenço]

I have a question about the MEMS audio sensor MP23DB01HP.

I think i already undertood that the output is a PDM, but my question is, how can I convert that to obtain a corresponding value in dB? Or some used unit?

I have done the acquisitons, but know i don't know what to do with that values...

Thank you in advance for your replies

[FilipeLourenço]

Thanks @Andrea VITALI !

Just one more question:

The datasheet says that a 94dBSPL signal at 1kHz stays at -24dBFS +/-1dB but also says 94dBSPL signal at 1kHz stays at -41dBFS +/-1dB, that results in 135. One for low power and another for performance mode. 

Using the FP-SNS-DATALOG2, I am using low power mode or performance mode?

[Andrea VITALI]

All function packs usually configure the sensors in high-performance mode. Looking at the code of DATALOG2 this seems to be confirmed. The SAI peripheral is configured for 8bits 192kHz which would mean 1.5MHz bitrate which corresponds to the high performance mode of the digital mic.