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Parametric sweep of Vth and OUTPUT to see the effect of Vth variation on OUTPUT

sazjad

Hi,

I am using Cadence 6.1.6 and Spectre simulator.
I am trying to sweep the threshold voltage of the transistors to see the effect of variation on the output signals. Can anyone please help me how can I do that in ADE?

Thank you for your time and help.

Regards,
MD

Parents
  • Andrew Beckett

    It depends on what you're doing. Some of the analyses (e.g. dc) allow you to sweep a model parameter - you can pick the model name and the parameter name you wish to sweep - and it will then do a dc analysis versus that sweep.

    If you're doing general analyses (e.g. transient) you may be better off editing the model files and making the vth0 or vtho (or whatever is the model parameter called in the models you're using) and replacing it with a variable name. Then  you can specify the design variable with that name in ADE, and do a sweep (e.g using the Tools->Parametric analysis if using ADE L) - so then  you'll be sweeping it for all instances across whatever you're simulating.

    Andrew

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  • Andrew Beckett

    It depends on what you're doing. Some of the analyses (e.g. dc) allow you to sweep a model parameter - you can pick the model name and the parameter name you wish to sweep - and it will then do a dc analysis versus that sweep.

    If you're doing general analyses (e.g. transient) you may be better off editing the model files and making the vth0 or vtho (or whatever is the model parameter called in the models you're using) and replacing it with a variable name. Then  you can specify the design variable with that name in ADE, and do a sweep (e.g using the Tools->Parametric analysis if using ADE L) - so then  you'll be sweeping it for all instances across whatever you're simulating.

    Andrew

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