about folded cascode amplifier

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Hafedh

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hi
I'am studying the structure of fully differential folded cascode amplifier with cmfb.


the simulatin result of the gain and the phase are as following :


although the cutting frequency is 2.4MHz.
so, why the curve of the gain drop rapidly from 62db, normally it should remains constant until it reaches the cutting frequency.

thanks for your help...

*if you have any doc about this structure thanks to send it, in my personal e-mail : fendri.hafedh@hotmail.com
 

hi si hafidh!!!
i thinck you should verify the axes; it could be non logarithmics so every thing will not be ok
 

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