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ADEXL measurement for temp drift of an output variable

vamshiky

Hi,

I have to measure a frequency of a circuit at  room temp, cold and hot.

and want the percentage change in frequency from room temp to cold and hot  in every process corner.(and any other global variable)

ex: ratio of  Freq_125C/Freq_25degC  is what I want in all corner  sims.

Please suggest any solution to do this within adexl, as presently I am copying data manually into an excel sheet and doing it.

Thanks,

Vamshi

Parents

  • Vamshi,

    There's no real API to do this until ISR12, so that would be your best solution. There's no "grep the particular PVT corner" option that would make any sense - for a start, one of the things that calcVal does is to ensure the order dependency is observed. Given that the simulations could potentially start and complete in any order, it's important for ADE XL to be able to keep track of the fact that it can't calculate any expression with a dependency on another result until that other result is available.

    So your best bet is to use a later ISR rather than attempt to come up with complicated solutions that would most likely not work reliably.

    Regards,

    Andrew.

Reply

  • Vamshi,

    There's no real API to do this until ISR12, so that would be your best solution. There's no "grep the particular PVT corner" option that would make any sense - for a start, one of the things that calcVal does is to ensure the order dependency is observed. Given that the simulations could potentially start and complete in any order, it's important for ADE XL to be able to keep track of the fact that it can't calculate any expression with a dependency on another result until that other result is available.

    So your best bet is to use a later ISR rather than attempt to come up with complicated solutions that would most likely not work reliably.

    Regards,

    Andrew.

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