Common mode feedback circuit

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ajetivarg

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Hi,


Can common mode feedback circuit correct the offset of a fully differential amplfier??

Till now, i thought it will correct the offset voltage, But when i am doing the simulations its not correcting the offset, its just setting the output common mode voltage.

please help.............

regards,

ravi.gajula
 

But when i am doing the simulations its not correcting the offset, its just setting the output common mode voltage.
Click to expand...
As intended by design...
Offset is a differential signal. How should it be affected by common mode feedback?
 

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