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Error SFE- 1999 with unknown parameter Name

Pumuckl over 11 years ago

Hi @ all,

I've got a Problem with my Modecard,when I define a paramater by another parameter:

Modelcard looks like:

.model pfet pmos level = 72
+BULKMOD = 1
+LMIN = 1e-008
+LMAX = LMIN
+BULKMOD = 1
+IGCMOD = 1

The Error for every parameter, which I define by another parameter occurs as follows:

ERROR (SFE-1999): "7pfet.pm" 4: Model `pfet': parameter `LMAX': Unknown parameter name `LMIN' found in expression.

How can I solve the problem?

Because I've got a very long modelcard and there are lots of parameters which are defined by previous parameters.

Thanks a lot.

Regards,

umut

Andrew Beckett over 11 years ago

I'm not aware of any SPICE language that supports this referencing of model parameters from the same model, and spectre doesn't support this kind of construct. They may exist in other SPICE variants, but I've not come across this myself.
You could wrap it in a subckt in spectre syntax, but it wouldn't be defined as a model that way.
Regards,
Andrew.
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Pumuckl over 11 years ago

Hi Andrew,

thanks a lot. Now it works.
I replaced all the referenced parameters by their values and it works.

Regards,
umu
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