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Why we use a large cap and a large inductor when doing AC analysis of opamp?

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tobben24

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Why do we insert a large cap on the input and a large inductor in the feedback when performing an AC analysis on an opamp?

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Re: AC analysis of opamp

It's just for biasing purpose which is very necessary when the supply voltage of vdd and ground. In this manner the dc voltage of all ports of opamp is vcm.
 
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