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Virtuoso version update issue

baobov587

Which sub version of 6.1.8 does the following function start from? When simulating STB, virtuoso will automatically add ". IPRB-DM" to the netlist.
For example, analysis ('stb? Start "1"? Stop "1000M"? Probe "I0. IPRB-DM"? UsingProbeMode t)
What I have learned is that IC6.1.8-64b.83 does not have this feature yet, while IC6.1.8-64b.500.30 already has this feature.

  • Andrew Beckett

    Support for differential (and common-mode) stability analysis using diffstbprobe is available in all sub-versions of IC6.1.8. The interface in ADE changed in a hotfix (I forget which one) but in the early versions ADE looked like this:

    (see the "Mode Type" at the bottom when I've selected a diffstbprobe). The netlist looks like this:

    stb stb start=1 stop=10G probe=I25.IPRB_DM annotate=status 

    The OCEAN equivalent of the ADE setup is:

    analysis('stb ?start "1" ?stop "10G" ?probe "/I25" ?usingProbeMode t )

    If you'd wanted common-mode stability, it would be this:

    analysis('stb ?start "1" ?stop "10G" ?probe "/I25" ?usingProbeMode t ?stbProbeMode "common" )

    In later IC6.1.8 versions the UI changes, but the OCEAN is the same:

    Regards,

    Andrew

  • baobov587

    Thank you Andrew！

    Your suggestion is very detailed and practical.

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