Can someone explain what is the reason of using feedback capacitor in an amplifier? does it even matter if we don't use it?
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9Please be more clear in your question. There are many ways that a capacitor might be used in feedback. A schematic would probably help. – jwh20 Mar 30 '21 at 14:44
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Integrator, high frequency filter. – user263983 Mar 30 '21 at 14:45
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Edit to show what configuration or circuit you mean... One of the NPN BJT inside a [compensated](https://electronics.stackexchange.com/questions/206299/op-amp-what-is-internal-frequency-compensation/206315#206315) op-amp circuit has capacitive feedback to stabilize the closed-loop feedback by attenuating the open-loop gain at high frequency, where there is more than 180 degrees of phase shift. (Most IC op-amps are compensated; uncompensated variants are sometimes available.) Or maybe you're asking about feedback outside the op-amp, as part of an integrator or active filter circuit? – MarkU Mar 31 '21 at 19:47