I am trying to get an idea as to what a device model parameter represents.
Can anyone please suggest where i can get the list for it.
I am specifically looking for the parameters like mobility, Cox,
subthreshold factor, TC of threshold voltage, Vth0 of the device etc.
Also i am trying to plot the threshold voltage of a device as per my DC sweep parameter. Can anyone please tell me how should i do that?
Did you consider reading the documentation? There's a whole manual on the device model equations, plus documentation on the parameters available for each mode. Run "cdnshelp" from <MMSIMinstDir>/tools/bin to get to the documentation.
If you want to plot the threshold voltage, the best thing to do is to create an include file, called (say) save.scs with the contents:
and then reference this file from Setup->Model Libraries or Setup->Simulation Files. Then you can see this parameter from the Results browser after your dc sweep. Of course, change M1 to be whatever the device name is in your case.
I went through this thread and am interested in plot vth through DC sweep. But I received this warning：
WARNING (SPECTRE-8282): `M1a' is not a device or subcircuit instance name.
WARNING (SPECTRE-8287): Ignoring invalid item `M1a:vth' in save statement.
WARNING (SPECTRE-8282): `M6' is not a device or subcircuit instance name.
WARNING (SPECTRE-8287): Ignoring invalid item `M6:vth' in save statement.
I am sure the name is correct and is copied from schematic instance name field.
Do you know how to fix it?
Presumably the name is not correct, or you've not given the correct hierarchical path to the instance. Look at the netlist itself - that's the best bet.
You can refer my snap cut. The naming is correct. I do not know how to check that hierarchical path. But the netlist is enough I think.
The transistors you're trying to save the vth for are inside the _sub0 subckt, and you didn't tell it the hierarchical path to them. Since there is only one instance of that subckt, ie instance I0, you'd need:
(assuming that the model pch is not a subckt itself).