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About compensation capacitor for folded-cascode OTA

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tia_design

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The one-stage folded cascode OTA normally need loading cap for compensation, but if I need extra cap for compensation, can I use MOSFET or nwell cap as this compensation cap? Because it will give smaller area with the same cap value.
 

yes, you can.
but you should make sure the mosfet is on.
 

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