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Cadence monte carlo simulation and "multiple" parameter

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Gornarok

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Hello,
Im using Cadence 6.1.3 and Id like to do monte carlo simulation. I found out that "m" shouldnt be used in schematic or monte carlo might be errorous. source: https://www.edaboard.com/threads/100882/

So I decided to test it:

testbench
https://obrazki.elektroda.pl/4071442600_1459279089.png

results
https://obrazki.elektroda.pl/5034690900_1459279036.png

Test cases
ob= 4 transistors parallel
mul = use of multiple parameter m=4
test = use of [1:4] notation
test2 = use of <0:3> notation.​

The "ob" case has best sigma a "prettiest" graph, but I need to use somekind of multiple feature because I have m = 100 in my schematic that I need to test for OPAMP mismatch, any ideas how to deal with this?

Thanks
 

Fun stuff!

<1:4> != <4:1>

<1:4> works as shown above

<4:1> is pretty close to the parallel solution

the disadvantage is that it seems the netlist is quite complex so Monte carlo with 100 iterations take ages...

Id still like to hear any tips if anyone has any...
 

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