How to simulate a full-differential Opamp's ?

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microqq

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for example:

How to simulate full-differential Opamp's open loop frequency response? settling time? PSRR?

In some case,it needs to be a unity-gain configuration,but it is difficult for a full-differential Opamp. What should do?

In text book, it always take a singe-ended Opamp for example.
 

There are no any problem if you have CT cmfb because you can easy break all feedback and an output will be set because of CMFB. In the case of SC CMFB, you can insert ideal opamp instead of SC and then do AC -analysis.
 

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