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Simulators >> Circuit Simulators >> defining user waveforms and functions in Cadence
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Message started by sutapanaki66 on Jan 29^th, 2008, 9:03pm

Title: defining user waveforms and functions in Cadence
Post by sutapanaki66 on Jan 29^th, 2008, 9:03pm

Hi,

I recently had to make a transition from Mentor's Eldo to Analog
artist for analog simulations. I used to work a lot in eldo with user-
defined waveforms. The command there is .defwave <name> <expression> -
basically you get the idea, one can define new waveforms from existing
waveforms by putting them in some sort of an expression. This can be
nested further to define waveforms based on already defined waveforms
or mixing user-defined waveforms with waveforms coming directly from
simulation like V and I.
I was wondering is there such a possibility in analog artist? It being
a widely used simulator I just can not imagine that there is nothing
there for such a useful thing, so may be I just don't know it.
So, I'll appreciate a lot any suggestions and they'll be also of great
help.

Title: Re: defining user waveforms and functions in Caden
Post by Frank Wiedmann on Jan 29^th, 2008, 11:31pm

You can define equations in the "Outputs -> Setup..." form, most easily by getting the expressions from the calculator. I don't think that it's possible to nest expressions, though.

Title: Re: defining user waveforms and functions in Caden
Post by sutapanaki66 on Jan 30^th, 2008, 11:59am

Is it possible to write expressions in a file which then I can include in the simulation? I assume there should be also some specific syntax when writing?