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Noise contribution of an instance

svcher

Hello,

Is there a way to get Spectre to output total noise contributed by a certain instance?  The instance may be a sub-circuit, in which case I'd like to know the sum of all contributions from elements inside of that sub-circuit. I understand that there is "noise summary" feature in ADE, but can this be done outside of the ADE, using stand-alone SpectreRF and/or SpectreMDL?

  Thanks!

Parents

  • OK, two things you need to do:

    1. Take out the rawfmt=psfascii from the options line; with that the noisesummary executable will crash (given the right argument) - it's clearly not designed with anything other than binary psf in mind
    2. Use "noisesummary noitest.raw no1-noise 1" (the dataset is called no1-noise).

    Looking at the result, it spits out a new logFile which wouldn't normally be seen by ViVA or OCEAN unless you move the noiseSumLogFile to be called logFile instead. However, I'm assuming (from the rawfmt setting) that you are parsing the psfascii, so probably all you need to do is:

    psf -i psf.noisesummary -o noisesummary.ascii

    to convert it to ASCII.

    Regards,

    Andrew.

Reply

  • OK, two things you need to do:

    1. Take out the rawfmt=psfascii from the options line; with that the noisesummary executable will crash (given the right argument) - it's clearly not designed with anything other than binary psf in mind
    2. Use "noisesummary noitest.raw no1-noise 1" (the dataset is called no1-noise).

    Looking at the result, it spits out a new logFile which wouldn't normally be seen by ViVA or OCEAN unless you move the noiseSumLogFile to be called logFile instead. However, I'm assuming (from the rawfmt setting) that you are parsing the psfascii, so probably all you need to do is:

    psf -i psf.noisesummary -o noisesummary.ascii

    to convert it to ASCII.

    Regards,

    Andrew.

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