fully differential opamp simulation help needed

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jimito13

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Hi,

I want to simulate the output swing and the IIP3 for a fully differential opamp.How should i set up the connections and the testbenches?I would appreciate any help.Thx in advance.
 

then for a two stage diffamp
give on one of the inverting/non-inverting input a dc voltage of 2V with a phase of 0
and on the other hand ,give an input of 0V with 180 phase


then plot the DC response along with the ac response of output with respect to input (2V) .

for input sources use VDC
 

sumanmicro thanks for your answer but i must admit that i didn't understand anything...could you please be more accurate to what you say and show me a testbench with a schematic?
 

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