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Question on sample and hold circuit

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abcyin

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Hi, all,

I am designing a switched-capacitor S/H circuit, and from some documents, I found that the opamp used in the circuit takes use of a switched-capacitor CMFB, what I want to know is that, why this specific CMFB should be used here, but not a general CMFB circuit?

and also any literature about this switched-capacitor CMFB is welcome.

Thanks in advance!
 

abcyin said:
any literature about this switched-capacitor CMFB is welcome.
Below pls. find a bundle of papers on SC CMFB circuits.
 

    abcyin

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