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Cadence Spectre - resistor dependent on equation

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harry456

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Is it possible to have a resistor in Cadence's Spectre (Spice) that is dependent on an equation like r = 2 * 1/(Vx - Vconst) with Vx as a net voltage?
 

It is possible in ADE XL environment with 2 tests - 1st for calculating voltage at interest node, which is refered to second one.
 

Could you be a bit more specific, thanks?
 

I think this is best done in veriloga (which Spectre digests
just fine, and Cadence supports editing and view-switching).
You will want to error-trap that denominator, and a poly-
source / analogLib primitives kludge probably doesn't have
much for that.

I'd recommend to find a resistor veriloga model, off the Web,
and just mess with the guts.
 

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