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Simulators >> Circuit Simulators >> spectre dc simulation to extract mosfet capacitanc
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Message started by horizon on Mar 1^st, 2006, 5:57am

Title: spectre dc simulation to extract mosfet capacitanc
Post by horizon on Mar 1^st, 2006, 5:57am

Hello,
I have a small question concerning sprectre.
Is it possible to use the dc operating point calculated by spectre to extract the cgg cgs cgd ?
I mean is it reliable ?

Thank you for your answer
Horizon

Title: Re: spectre dc simulation to extract mosfet capaci
Post by Geoffrey_Coram on Mar 6^th, 2006, 8:26am

Doesn't spectre report cgg, cgs, cgd as part of the operating point information?

As to the "reliability" perhaps you are asking whether the BSIM3/4 operating point information reported in simulation will match the measurement? In which case, the answer is often no, but the simulator isn't at fault. BSIM3/4 models are known to produce non-physical capacitances, including negative transcapacitances.