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[SOLVED] Output swing calculation of cascaded amplifier

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Sambhav_1

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Hi All,

I want to know how to calculate the output swing of the 3 cascaded cmos differential amplifier(acting as pre amplifier stage)?
I tried by giving differential input ramp from 0 to 1V at the input of first stage.
Now first stage output is showing the correct characteristic, however the input to second stage will not be a 0 to 1V ramp, instead 100-200mV swing at its input and hence its not ging the complete output swing and similar for third stage.
Kindly share your inputs, and please correct me if i am wrong or missing something.

Thanks and Regards
 

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