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Hysteresis sweep option in DC

sohaiba

Hi,

I haven't been able to see a Hysteresis plot by using the DC Hysteresis sweep option. I have also enabled the 'DC operating point' option as well. I was expecting to find a negative going plot as well for the device but there is only a single Voltage transfer characteristic curve.

 Following are the settings the Cadence spectre.out shows.

Important parameter values:
    reltol = 1e-03
    abstol(V) = 1 uV
    abstol(I) = 1 pA
    temp = 120 C
    tnom = 27 C
    tempeffects = all
    gmindc = 1 pS
    hysteresis = on

Which verifies that hysteresis option is "ON".  I am using MMSIM 11.1 and Cadence 6.1.5. Could you indicate where I could be going wrong?

Regards

 

 

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  • Andrew Beckett

    No, I have no idea why your hysteresis isn't working. You still haven't specified the exact version number (this will appear in the spectre log file). However, since my example works, it's unlikely to be a generic bug in the simulator.

    The only next step is to see either the complete spectre log file (you didn't post that - especially the bit showing the dc analysis), and better still the actual input.scs. If you can't post that here, you'll need to follow this up through your University support channel (as we've discussed before).

    Regards,

    Andrew.

Reply
  • Andrew Beckett

    No, I have no idea why your hysteresis isn't working. You still haven't specified the exact version number (this will appear in the spectre log file). However, since my example works, it's unlikely to be a generic bug in the simulator.

    The only next step is to see either the complete spectre log file (you didn't post that - especially the bit showing the dc analysis), and better still the actual input.scs. If you can't post that here, you'll need to follow this up through your University support channel (as we've discussed before).

    Regards,

    Andrew.

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