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Simulators >> Circuit Simulators >> the .sens simulation
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Message started by c1000 on Feb 10^th, 2011, 6:46am

Title: the .sens simulation
Post by c1000 on Feb 10^th, 2011, 6:46am

After using .sens simulation we can get the sensitivity of output variables to certain parameters Svp=dv/dp.

How does spectre or spice calculate the sensitivity. it is not possible for simulators to use Svp=(V1-V2)/(p1-p1), otherwise simulator needs to evaluate the output variables twice and store all the data for subtraction.

is there anyone who could explain the inner algorithm for sens? Thanks a lot!!!

Title: Re: the .sens simulation
Post by Geoffrey_Coram on Feb 11^th, 2011, 4:10am

I think the simulator has to have the derivatives of the output variables with respect to the parameters.