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[SOLVED] how to get gm/id plot vs vgs in cadence virtuso

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jardila

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Hi,

To get gm/id plot you can setup a simulation with the schematic that is showing in the following figure.

gmId.png

Then you must to do a parametric simulation with Vgs as variable. After this, you can use the calculator tool in order
to read the gm and id of the component.

The interpretation is the following:

gm/id is a measure of the sensitive of the device with respect to its current polarization. With the results of
this simulation you can see that as the vgs increases the gm/id decreases, in other words, the sensitive of the
device (gm) to converte voltage (vgs) into current (ids) decreases for the same current polarization.

Best regards
 
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