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Monte Carlo mismatch on certain instance hierarchy level with Verilog-A model

nthoangga

My hierarchy looks like this: I1.I2.I3.sub4

Which sub4 is a verilog-A model. Each I3 contains several sub4, I2 contains several I3 and so on.

Is there a way that I can run Monte Carlo sim with mismatch on some parameters of sub4, but only on I2 level (All sub4 inside I3, and all I3 inside I2 are exactly the same with no mismatch)?

Thanks.

  • Yes. You can do this with the Monte Carlo options form in ADE XL:

    The left form is the options form, and when you click on the Specify Instances/Devices button, the right form appears. You can then select a hierarchical path (an occurrence) to either include mismatch (so that means mismatch only applies for those blocks) or the opposite - to exclude mismatch from certain occurrences. The master and subckt choices allow you to easily select all the instances for a particular block - but they're still filtered by specific hierarchical occurrences.

    Regards,

    Andrew.

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