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How can I simulate based on the random mismatch generated by a previous Monte Carlo iteration?

AW202410094823

Hi all, I'm doing Monte Carlo simulation using ADE Explorer in cadence 618, and I'm wondering is there a way to extract mismatch parameters generated from a specific iteration of a previous Monte Carlo simulation, so that I can further simulate (for example, sweep some design variables) based on it? (Or let's say, I do a number of iterations of Monte Carlo simulation first, and I want to choose a specific iteration and do some simulation using its device mismatch parameters while changing some design variables. Is it possible?)

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  • You can do this by going to the Detail or Detail Tranpose view and then over one of the outputs on the Monte Carlo iteration you want, do Right Mouse->Create Statistical Corner.

    Depending on whether you had (in the Monte Carlo setup) checked the SaveStatistical Parameter Data you will either save a sequence-based corner, or get prompted:

    The sequence-based is quicker - it means that when you re-simulate, it just runs a single-point Monte Carlo again, but the risk is that if the design changes (e.g you add or remove a device), you won't get the same result as the random number generation will get perturbed by this (changing design variables is OK though). The "statistical parameter values" means that it will save the parameters used for each device and re-use those, and that's more robust in terms of re-use (you can still change design variables for example).

    Andrew

  • in reply to Andrew Beckett

    Thank you Andrew, that works well!

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