Hi!
I am new to AMS and all so excuse if my question is very basic. I am trying to simulate 2 inverter connected in a chain with the first inverter made from actual PMOS/NMOS transistors and the second is a functional description of a not gate with the code being
module inv(x,y)
input x;
output y;
not(y,x)
end module.
Now I have setup the connection files as described in the link below for 1.2V. The only thing I change is the Vsup=1.2, Vthi=0.666, Vtlo=0.333, Vlow=0.
Now the issue I am facing is that the output of the second inverter (the one with functional description) is not what I would expect it to be. I have attached the figure below. The top waveform is the input pulse, the second wave is the output of the schematic level inverter and the last one is the output of the inverter with the functional description. Please guide me if I am doing something wrong or is there a setting that needs to be changed.
http://www.designers-guide.org/Forum/YaBB.pl?num=1249327323