cancel
Showing results for 
Search instead for 
Did you mean: 

About MP23ABS1, Its Output voltage & frequency? Whether its output voltage will be superimposed or original waveform?

MHelk.1
Associate
 
1 REPLY 1
Eleon BORLINI
ST Employee

Hi @MHelk.1​ , the output of the analog mic MP23ABS1 is basically ratio-metric. This means that if you supply the device with Vdd = 2.7V (the typical datasheet value), you will get an output offset of almost Vdd/2 (DC level value), with the signal superimposed on it. For example, if the input signal is a sinewave at 1kHz, 120dBSPL, being the sensitivity typ value -38dBV, the output signal will be DC level + sinevave at 1kHz of about 300mV peak. The output frequency is the same one of the acoustical input wave. Regards