The function of capacitance putting in the input stage of an opamp

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mickey0908

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anybady know the function of a capacitance putting in the input satge of a AmOpa? thanks
 

Re: HELP!

Hello

Normaly is used to desacupulation Dc or for frequency filter .
Depend of the circuit and is nature.

Regards
 

Re: HELP!

Most likely it's for AC-coupling, so you don't need level
shifters and worry about the DC biasing etc. In RF applicaitons,
it might be used for matching.
 

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