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Simulators >> Circuit Simulators >> User defined resistor model in Cadence Spectre
https://designers-guide.org/forum/YaBB.pl?num=1423588857

Message started by jdp on Feb 10^th, 2015, 9:20am

Title: User defined resistor model in Cadence Spectre
Post by jdp on Feb 10^th, 2015, 9:20am

Hello,

I am trying to run the simple example as depicted in the image below. But, I am not able to implement the resistor (with some user defined parameters rsh and kf) as required here! :(

For that, I tried to take a "res" from analogLib, and then change its "model name" to say "flickres_jdp" and also made a model file (say flickres_jdp.scs) - then added this model file from ADE->Setup->Model Path
The text put in this model file is:

Quote:

.model flickres_jdp resistor rsh=1K kf=10e-13

Getting following error:

Quote:

ERROR (SPECTRE-16384): Signal V(vout) = -2.45831 GV exceeds the blowup limit for the quantity `V' which is (1 GV)....
Analysis `tran' was terminated prematurely

My questions:

1. Is the above method okay, and is the format of the model file right?

2. Is there any option to include a ".model" statement in the schematic editor in cadence?

3. Is there any way to edit the netlist and then run the simulation?

These might be very trivial..but please help... :-/

Title: Re: User defined resistor model in Cadence Spectre
Post by Geoffrey_Coram on Mar 13^th, 2015, 11:03am

.model is not Spectre format. Did you get any warnings at the start of the simulation?