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Simulators >> Circuit Simulators >> Does the output probe contribute to the nois
https://designers-guide.org/forum/YaBB.pl?num=1196339911

Message started by Julian18 on Nov 29^th, 2007, 4:38am

Title: Does the output probe contribute to the nois
Post by Julian18 on Nov 29^th, 2007, 4:38am

Hi, there
when I am simulating noise, usually a resistor or a port are specified as output probe, I just want to know if the output noise comprises the contribution due to the resistor or output port?

Thanks.

Title: Re: Does the output probe contribute to the
Post by didac on Nov 29^th, 2007, 10:26am

Hi,
Output noise takes into account all the noise of the circuit including the load, NF calculated with a probe eliminates the noise due to the probe.
PS:check Virtuoso Spectre Circuit Simulator Reference for a detailed explanation of how spectre calculates noise quantities.
Hope it helps,

Title: Re: Does the output probe contribute to the
Post by Ken Kundert on Nov 29^th, 2007, 6:22pm

Running "spectre -h noise" would also give you the information you needed.

-Ken