"Does transient simulation included noise voltage?&quot

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cqmyg5

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transient simulation noise

Could anyone tell me:

if perform a transient simulation in Hspice, Does noise from MOS and resistor be added to the final print-out voltage?
 

Re: "Does transient simulation included noise voltage?&

cqmyg5 said:
Could anyone tell me:

if perform a transient simulation in Hspice, Does noise from MOS and resistor be added to the final print-out voltage?
Click to expand...

It depends upon the settings with your simulator tools. Normally there exist a switch with which you can set or unset the noise associated with the resistor & MOS.
by the way which simulator are you using ?
 

The transient simulation in Hspice doesn't include circuit noises. Noise analysis should be performed in frequency domain.
 

Re: "Does transient simulation included noise voltage?&

Use AC analysis,u can get noise
 

Re: "Does transient simulation included noise voltage?&

Hspice doesn't included, but Spectre's transient simulation does!

 

Re: "Does transient simulation included noise voltage?&

As I remember, in Hspice , both .ac and .net command are needed for noise analyses.
In Spectre, the noise included in transient simulation is for PSS I guess.
 

Re: "Does transient simulation included noise voltage?&

I don't think spectre's transient include noise. A proof is similating a inverter osc , it would not oscillate
 

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