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Plotting Gm vs Vgs in cadence IC6.1.6

Casp

Hi,

I want to plot gm of a transistor vs vin. Basically gm of a differential pair with input.

I read it on this forum where Andrew Beckett suggested to make a file and write save M1:gm and then add it model libraries and run dc-sweep analysis.

If I try to do so it gives me a warning 'M1: Does not have a terminal named `gm''.

If I look at netlist file input.scs then it is indeed using terminal e.g. 1,2,3 to save the waveform 

Is anything has changed ? 

How I can now plot gm of a transistor in dc-sweep analysis?

Regards,

Kamran 

Parents

  • HI Anrew,

    First I want to apologies for double post because I was not able to find the original post.

    Actually I am just making a simple circuit with differential pair. In DC op simulation I can see the operating point of that transistors but in the dc sweep it issues a warning about the terminal.

    Regards,

    Kamran 

Reply

  • HI Anrew,

    First I want to apologies for double post because I was not able to find the original post.

    Actually I am just making a simple circuit with differential pair. In DC op simulation I can see the operating point of that transistors but in the dc sweep it issues a warning about the terminal.

    Regards,

    Kamran 

Children
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