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Simulators >> Circuit Simulators >> the wave from of input noise in pnoise
https://designers-guide.org/forum/YaBB.pl?num=1507257736

Message started by johnny on Oct 5^th, 2017, 7:42pm

Title: the wave from of input noise in pnoise
Post by johnny on Oct 5^th, 2017, 7:42pm

hi,

im simulating the pss+pnoise, i want to get the noise power of my circuit(a amp gain=A) after the simulation, i plot the output noise and input noise in pnoise analysis, i have a question why the input noise wave form have the highlight bulge and increase while high frequency? other confusion is why the input noise not equal to the output noise/A^2 ?

thanks
joh

Title: Re: the wave from of input noise in pnoise
Post by Ken Kundert on Oct 5^th, 2017, 11:36pm

They are probably the flicker noise being up-converted to multiples of the clock frequency.

-Ken

Title: Re: the wave from of input noise in pnoise
Post by johnny on Oct 7^th, 2017, 1:19am

thanks Ken