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Sweep design variable inside Monte Carlo run

Analog Pete

For each Monte Carlo sample (i.e., for each Monte Carlo instance of my circuit), I want to run a transient simulation at multiple temperatures.  For example, the simulation tree should look like

MC Sample #1
        25C
        85C
        125C
MC Sample #2
        25C
        85C
        125C
...
MC Sample #50
        25C
        85C
        125C

Unfortunately, I seem only to be able to do this:

25C
        MC Sample #1
        MC Sample #2
        ...
        MC Sample #50
85C
        MC Sample #51
        MC Sample #52
        ...
        MC Sample #100
125C
        MC Sample #101
        MC Sample #102
        ...
        MC Sample #150

Is it possible to do this?  In other words, is it possible to nest a design variable sweep inside a Monte Carlo run?  A possible alternative approach might be to set up temperature as a dynamic variable in my transient simulation.

I am using ADE Explorer in version IC6.1.8-64b.500.31.

  • I think I found a solution.  In the Corners Setup form, I specified Temperature in the corner used with Monte Carlo Sampling.  In the results tab, a column for each temperature is shown for each MC iteration.  So the key is to specify Temperature (can also specify Design Variables) in the corner you plan to use with Monte Carlo simulation.

  • in reply to Analog Pete

    That doesn't alter the way the sweeps are done - I suspect you may just need to use swapSweep() afterwards when looking at the results. I don't see that it should actually make a difference which way around the sweeps are done - it should be the same outcome either way.

    Regards,

    Andrew

  • in reply to Andrew Beckett

    Thank you, Andrew.  I now see that I misunderstood how Monte Carlo works in the first place.  The "MC Iteration" is always effectively in the outer loop.  Whatever temperature or design variable sweep is to be done, each point in those sweeps will run on the same MC Iteration.  I was afraid that a new MC Iteration could be generated for every single point depending on how the maestro view was configured.

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