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gm/Id Methodology

predator89

I want to plot gm/Id Vs Id/(W/L) as per gm/Id methodology to bias transistors properly in strong inversion.

Can anybody give me the steps to plot this in cadence spectre?

Any help will be welcommed.
Thanks in advance.

Cheers

Parents

  • There are numerous examples in these forums showing how to save operating points during a DC sweep, how to calculate combinations of operating point parameters, and to change the x-axis to plot one waveform versus another. In fact I'm sure an almost identical question has been asked before - so you might want to try using the little magnifying glass icon in the top right corner of the web page to search a bit.

    Unfortunately I don't have the bandwidth to put together a complete worked example for you. Maybe somebody else can though, but it's best if you start doing some research yourself because (as I said) this type of question is extremely common.

    Regards,

    Andrew.

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  • There are numerous examples in these forums showing how to save operating points during a DC sweep, how to calculate combinations of operating point parameters, and to change the x-axis to plot one waveform versus another. In fact I'm sure an almost identical question has been asked before - so you might want to try using the little magnifying glass icon in the top right corner of the web page to search a bit.

    Unfortunately I don't have the bandwidth to put together a complete worked example for you. Maybe somebody else can though, but it's best if you start doing some research yourself because (as I said) this type of question is extremely common.

    Regards,

    Andrew.

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