xtal wrote on Dec 29th, 2007, 5:53pm:From reading the topic (and also some of the other related topics in this forum), I understand that in order to vary the threshold voltage (device paramater), I need to vary the width/ length of the transistor. Is this correct? or i can vary the threshold voltage directly.
You can vary the threshold voltage directly; you seem to have done this in your example.
Quote:Now in this model, there are paramteres defined for each width and length like if i give the width of the transistor as 3u then it picks up the the 4th part in the model ntn_typ
So in the 4th part where vth0 was defined, I changed it to "vth0=0.3340089*vth_variable1".
I think there's something wrong with your section set-up. In your netlist, what is your library statement?