PSPICE variable capacitor

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carlmarx

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I have been trying to make a variable capacitor based off of a lookup table in PSPICE. I found a paper by cadence, A Nonlinear Capacitor Model for Use in PSpice, which gives a method of creating a variable capacitor but I am unsure how to actually write the .lib file to implement this design.

Any assistance would be appreciated.
 

This is the closest way I have found but it still gives me errors

.SUBCKT TableCap 1 2
Etab 1 2 TABLE(V(1, 2), 0V, 1e-6, 20V, 1.24e-6, 40V, 1.56e-6, 60V, 1.96e-6)*DDT(V(1, 2))
.ENDS

I believe it is upset because I'm trying to change the same node I am reading
 

Did you try to use different node pairs for control & output? If really necessary, you can still recombine them via an Evcvs.
 

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