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FET intrinsic gain characterisation (Read 2392 times)
zulqar
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FET intrinsic gain characterisation
Dec 05th, 2015, 1:40pm
 
Hi everyone,

I am characterizing a Field effect transistor with a verilog A model using spectre. I want to plot gmro (intrinsic gain) vs vds. But the problem is that, the model does not store gm or gds values in dc operating points. Is there any test bench from which I can extract gmro vs vds plot without actually getting gm and gds values individually?
Any suggestion is appreciated.

Thanks!!!
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Geoffrey_Coram
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Re: FET intrinsic gain characterisation
Reply #1 - Jan 5th, 2016, 6:30am
 
If you have the verilog-a code, you could add those operating point values.
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Ken Kundert
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Re: FET intrinsic gain characterisation
Reply #2 - Jan 5th, 2016, 10:34pm
 
Do you mean gmro? You can use two AC analyses, one to measure gm, the other to measure ro.

-Ken
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