Question about Monte Carlo in ADE

[ccw27]

Hi all,

How do I vary vth without actually using a voltage source and varying it by delta? Below is what I tried to do but it does not work. Don't really understand the subckt thing. Do I need a subckt statement for every MOS that I have?


statistics{
mismatch{
vary vth0mis_n dist=gauss std=3e-3
}

model n_bpw_33_mm bsim3v3
type=n
+ vth0 = 0.6+dvth0+vth0mis_n/(w*l)

 

[Humungus]

Re: Monte Carlo in ADE

Is this Spectre? See at site www.designers-guide.com. There is a white paper explaining how to implement MC models in spectre.

Also, in your equation the term divided by w*l should be divided by sqrt(m*w*l) instead.