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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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  • potsticker

     hi Andrew,

    i found this post to be very similar to the question i have on hand so I am replying to it.
    (please let me know if i should start a new thread)

    Question: in the noise simulation, is there anyway to retreive the original device noise itself.

    for example, the simulation noise summary can report M1 contribute 2.5e-22 to the output, but how can i found out what the M1 device noise is itself before it is multiplied by the transfer function ?

    thanks
    Frank

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  • potsticker

     hi Andrew,

    i found this post to be very similar to the question i have on hand so I am replying to it.
    (please let me know if i should start a new thread)

    Question: in the noise simulation, is there anyway to retreive the original device noise itself.

    for example, the simulation noise summary can report M1 contribute 2.5e-22 to the output, but how can i found out what the M1 device noise is itself before it is multiplied by the transfer function ?

    thanks
    Frank

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