Question about transient noise option under transient analysis of spectre

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hyleeinhit

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Hello, guys,

When you run transient analysis in spectre, you can enable 'transient noise'. When 'transient noise' is enabled, no noise power energy data is displayed and able to set, and you can only set noise scale.

My question is: By enabling 'transient noise', what kinds of noises are added into circuit simulation? Is it the same noise as the result from .noise analysis? Or, just a random noise source added to circuit instance?
 

I believe that the noise is just essentially thermal noise for resistances, transistor noise, and other intrinsic noises that occur in your circuit. This isn't noise being "added," it is just noise being recognized.
 

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