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Analog Verification >> Analog Functional Verification >> avoiding singular matrix and zero diagonal messages
https://designers-guide.org/forum/YaBB.pl?num=1415572788

Message started by suam on Nov 9^th, 2014, 2:39pm

Title: avoiding singular matrix and zero diagonal messages
Post by suam on Nov 9^th, 2014, 2:39pm

As a good modeling practice it is not recommended to write the following code to avoid floating node, during enable low. What are the different ways to rewrite this code.

[I(bias) <+ enable ? (V(bias) - Vt)/Ron : 0 ;]

Title: Re: avoiding singular matrix and zero diagonal messages
Post by Ken Kundert on Nov 9^th, 2014, 3:45pm

Code:

I(bias) <+ enable ? (V(bias) - Vt)/Ron : 0 ;
I(bias) <+ V(bias)/1T;

-Ken