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input and output noise simulation with Spectre Noise analysis?

isazulkc
Hi, I would like to know if the output noise (V-rms) obtained when I simulate the output noise of a circuit with Spectre simulator (Noise) include the noise of ALL the components referred to the output ? In fact I got some inconsistant result when comparing the input and output noise (V-rms) given by the simulator. I got 1.4 mV-rms at the output while I have 13 mV-rms as input refered noise. I know input referred noise give the input equivalent noise (anasimhelp) considering a noise-free circuit, but I am note sure for the output noise. Thanks for your help!! Best regards
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  • Andrew Beckett

    Hi Frank,

    potsticker said:
    I understand that this is not available from the GUI, but if you know of any function or script i can use to retreieve individual device noise from the ac. noise sim I would appreciate it. I assume the ac. noise sim does indeed calaculate indivdual noise first?

     

    Whilst this is computed inside the simulator, there's no option to output the date. You'll need to contact customer support to request this enhancement (which seems quite sensible and consistent to have to me).

    Glad you managed to use pss/pnoise as an alternative.

    Regards,

    Andrew.

Reply
  • Andrew Beckett

    Hi Frank,

    potsticker said:
    I understand that this is not available from the GUI, but if you know of any function or script i can use to retreieve individual device noise from the ac. noise sim I would appreciate it. I assume the ac. noise sim does indeed calaculate indivdual noise first?

     

    Whilst this is computed inside the simulator, there's no option to output the date. You'll need to contact customer support to request this enhancement (which seems quite sensible and consistent to have to me).

    Glad you managed to use pss/pnoise as an alternative.

    Regards,

    Andrew.

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