inverter_threshold.m

cmos仿真程序, cmos仿真程序, cmos仿真程序,

function vm = inverter_threshold(vdd, wn, ln, wp, lp)
% analysis of inverter threshold for 0.25 micron CMOS process
techn = [0.43, 0.4, 115e-6, 0.06, 0.63, 0.005, 0.015];
techp = [-0.40, -0.4, -30e-6, -0.1, -1.04, 0, 0.015];
vtn = techn(1);
kn = techn(3);
vsn = techn(5);
vtp = techp(1);
kp = techp(3);
vsp = techp(5);

weffn = (wn - techn(7))*1.E-6;
leffn = (ln - techn(6))*1.E-6;
weffp = (wp - techp(7))*1.E-6;
leffp = (lp - techp(6))*1.E-6;
ratio = (weffp/leffp)/(weffn/leffn);

vtan = vtn + vsn/2;
vtap = vtp + vsp/2;
vm = (vtan*kn*vsn + (vdd + vtap)*kp*ratio*vsp)./(kn*vsn+kp*ratio*vsp);