Question on Switched Capacitor CMFB circuit

[Robertt]

Dear all,

I know the following circuit is always used as SC CMFB, but I dont know how it works. Could any one who familiar with it explain the operation mechanism for me.

I really appreciate your help

Best

 

[noiseless]

look at the gray book

 

[Robertt]

Yes, I read it in Gray's book, but I couldn't understand. So I need someone who can explain it in a simper way.

Thanks