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CMFB circuit stability

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musclesinwood

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Dear All,

I have designed a fully differential operational amplifier with Continuous time common mode feedback circuit. Now I want to check if the CMFB circuit is stable or not. I already tested my operational amplifier in differential mode and it is stable using the AC analysis. Can anyone please tell me how can I test my CMFB circuit if it is stable or not ?

Regards
 

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