Feb 3, 2007 #1 P pugongying Member level 3 Joined Apr 2, 2006 Messages 64 Helped 1 Reputation 2 Reaction score 1 Trophy points 1,288 Activity points 2,110 I used to use hspice to generate id~vdsat curve to help my design currently I am using spectre,and I am not famaliar with it. I tried to simulate a single NMOS, and I can plot id~vgs curve however,I tried to plot id~vdsat, in which vdsat=2*id/gm. so I wonder 1)how to generate gm, 2)how to do calculation to generate vdsat, 3)and how to change the x-axis from vgs to vdsat? thanks very much!
I used to use hspice to generate id~vdsat curve to help my design currently I am using spectre,and I am not famaliar with it. I tried to simulate a single NMOS, and I can plot id~vgs curve however,I tried to plot id~vdsat, in which vdsat=2*id/gm. so I wonder 1)how to generate gm, 2)how to do calculation to generate vdsat, 3)and how to change the x-axis from vgs to vdsat? thanks very much!
Feb 3, 2007 #2 S shockie Advanced Member level 4 Joined Jul 10, 2002 Messages 100 Helped 6 Reputation 12 Reaction score 4 Trophy points 1,298 Activity points 500 most likely you can use calculator in spectre to plot many curve by expressions.