i have a mems microphone that i transfer this microphone model to the ADS.this microphone capcitance change with pressure(sound level).for modeling this microphone i need to understand that this microphone how to convert pressure to signal?
please help me for modeling pressure to voltage.
for example 1pa----------------(?)mvolt generated
or 1pa equivalent how volt or mvolt?
Hi Javad
I think you're referring to a capacitive microphone . if yes , what is the problem ? when your sound is coming through the plates , thus their distance will be changed ( distance between two plates ) . and thus capacity will be changed .
Hence when you tie it to the DC supply ( via a resistor ) you'll have a variable DC voltage across your microphone . ( that is like your sound ! )
I hope you got the point
Best Wishes
Goldsmith
Hi Javad
I think you're referring to a capacitive microphone . if yes , what is the problem ? when your sound is coming through the plates , thus their distance will be changed ( distance between two plates ) . and thus capacity will be changed .
Hence when you tie it to the DC supply ( via a resistor ) you'll have a variable DC voltage across your microphone . ( that is like your sound ! )
I hope you got the point
Best Wishes
Goldsmith
hi goldsmith
thanks for your help
but i dont know that bias thic capacitive microphone and simulation its in the ADS
I need a interface cicuite to connect this capacitive microphone to the preamplifiers;
and how simulation this capacitive microphone in ADS as a variable capacitance?
thia means for this input capacitve microphone how simulation pressure that generated voltage in output microphone?