MP34DT06J Mono Mode connection L/R

[MScha.3]

does it matter in mono operation whether I connect pin L/R to GND or to 3v3? 

Or does the pin always have to be open or to GND in mono mode?

Of course, my output signal has to be evaluated differently, but nothing can be damaged from an electrical point of view?

Thanks

[Eleon BORLINI · Accepted solution]

Hi @MScha.3​ ,

the "mono" condition is running when you have a single microphone, and you set the L/R to GND or to VDD,

So, no electrical issue if you connect the L/R pin to 3v3, provided that it is the same level of the power supply.

You should of course pay attention to sample the PDM data on the rising edge of the mic clock, as described in the Figure 2 of the MP34DT06J datasheet.

-Eleon

[MScha.3]

Thx