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In case of spectre you can do in this way.
Now this is in unity gain configuration and so you can run a transient with a large signal and then select THD option from the waveform viwer.There you need to specify the fundamental frequency.It will give you hormonic distortion interms of percentage.
I am simulating a BGR using HSPICE.
When i am simulating .op at any specified temprature using .temp,it is doing fine.
But when i am trying to sweep the temprature, simulation is getting halt.I have tried with diffrent ranges of temprature,but the result is same.I tried with the different GMINDC...
when to use large signal circuit
Normally any active device which we use for linear applications(ex:amplifier) will have non linear transfer function(input vs output).In order to use those devices for linear applications we have to limit our operation to a small segment where you can consider...