plot gm vs vin

[pariii]

hi guys, l want to plot gm vs vin for my OTA. i used dc analysis in cadence and sweep vin(dc) and by using transconductance in direct plot i set idc of my circuit as numrator and the differential output as denumrator but the result is like this and i dont know why. can anyone help me with this probelm.

thanks in advance.

 

[dick_freebird]

Calculator is your friend, but he no speak so good.

You need a gm expression and then you need to work the plot presentation.