Hi, Andrew
I have checked the gpdk045 model report, it's said the vth is obtained using constant current method, the intercept current=Icon*W/L (Icon=1e-8A for 1.1V device and Icon=1e-7A for 1.8V device), Vth unit is V, spec is here
and i simulated use the circuit, VDS=1.1V and sweep the VGS from 0 to 1.1V.
according to the equation constant current method int current = 10u/40n *1e-8A =2.5*e-6 A =2.5uA, check the ids and vth is located at around 320mV, close to the spec, but check at result browser, plot the vth, about 620mV, what is wrong here? thanks a lot.
