I have attached the screen shots for my outputs for folded cascode opamp .......
the output is not coming as exact as sine wave......
is it okey.....???
what do you mean by second stage in ur pic? Folded cascode is single stage amplifier, though with a rather comlicated load...
as for ur pic, ur input is too small: only 20uV peak to peak. The output then is acceptable since even a 60db gain would not be able to rise output voltages to opamp saturation. One thing u must improve upon is the jitters at the peaks. this should not happen.