help on noise simulation using spectre

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hoonsk

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Hi,
I have a bandgap reference system that need to measure its noise output in uVrms using spectre. When I open the choosing Analyses option, what should I fill up the Output Noise & Input Noise portion ? For output noise, there is probe/voltage option and we need to select Output probe instance .... is it just selecting the output cap ?
For input noise, there is port/voltage/current and we need to select the corresponding input port, voltage source .... what should I select ?

Thanks !
Richard
 

I also want to know, but the noise analysis maybe in the analysis options
 

Hi

You schould use voltage output (than you schould select your BG output, and ground)
For equivalent input noise you can choose what ever you want, since you don't have real input. It is good idea for you to take one current source and to conect it at some node with idc=0 and than select it as equivalent input noise source.
 

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