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Regarding Plotting of different transistors parameters as a fuction of sweep variable

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Pawanshekarr

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hello , I am designing a folded cascode topology opamp using gm/id technique. Iam stuck at a point as iam unable to plot a particular parameter like 'gm' for the entire sweep range. I tried saving file saveop.scs and adding it to model libraries and later viewing the results in the result browser but it did not work. any help regarding this appreciated.
Thanks in advance
 

gm is an outcome, not an input parameter. Not sure
how you think you can loop it. But you could certainly
loop some other quantity and save the calculator
expression for one device's OP gm result (or N of them)
and then do "whatever" with the information.
 

I have to see how gm varies with respect to change in VGS. Is there a command in the calculator which can help me achieve this?
 

You don't show anything.

Show us following with correct terminologies.

(1) What simulator do you use ?
(2) What post processing environment do you use ?
 

Your Calculator ought to have an "OP" button which
gives you a chooser-list of OP results for a clicked
device.

For a single device you can just run a DC sweep and
use deriv() to get gm (as dId/dVgs).
 

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