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Simulators >> Circuit Simulators >> Using a SKILL function in a MonteExpr in OCEAN?
https://designers-guide.org/forum/YaBB.pl?num=1163238526

Message started by JosephRyan on Nov 11^th, 2006, 1:48am

Title: Using a SKILL function in a MonteExpr in OCEAN?
Post by JosephRyan on Nov 11^th, 2006, 1:48am

Is it possible to use a SKILL function as the scalar expression of monteExpr() instead of a calculator function? I'd like to use a custom function to will implement a binary search (to calculate the body-offset voltage of a Sense Amp), but using anything except a calculator function gives me errors! I need to use a custom function since I'll need to run several simulations per monte-carlo change (that is, for every time the monte-carlo simulation changes the Vts of the transistors, it will need to run about 6-8 transient simulations). As an example, take the following simplified code:

Code:

procedure( cboffset()
i = 2
i
)

monteCarlo( ?numIters 2 ?analysisVariation 'mismatch ?sweptParam "None" ?sweptParamVals "25" ?saveData t )
monteExpr( "boffset" "cboffset()")
monteRun()
monteResults()

The cboffset function just returns 2 every time in this example, but would eventually implement a binary search. However, this example will cause errors since the monteExpr will not evaluate. Can anyone help?

Title: Re: Using a SKILL function in a MonteExpr in OCEAN
Post by Andrew Beckett on Dec 12^th, 2006, 2:55pm

Do you have sourcelink access? I wrote a solution on this - solution number 11007118 covers using custom SKILL functions in monteExpr and gives two different ways of solving this.

Regards,

Andrew.