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can any one tell me whether hspice can simulate KT/C noise?

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I mean during the transient analysis in hspice, can it simulate random noise
caused by Capacitor or MOS.
Or is there a random number generator in its engine corresponding the white noise or 1/f noise?
Thanks
 

Re: can any one tell me whether hspice can simulate KT/C noi

SPICE type simulators do not simulate Johnson noise in the time domain. This is because the noise created by the simulation errors are so large that it would mask the Johnson noise.
 

Re: can any one tell me whether hspice can simulate KT/C noi

flatulent said:
SPICE type simulators do not simulate Johnson noise in the time domain. This is because the noise created by the simulation errors are so large that it would mask the Johnson noise.
Click to expand...

I do not know the exact reason for that, but when we perform an FFT of an ideal wave we obtain the SNR the simulator can get. To increse the SNR we use more precision (reduce the time step, etc) to do not mask the Johnson noise.

What do you think flatulent ?

Bastos
 

Re: can any one tell me whether hspice can simulate KT/C noi

Hi.
The following lines are from star-HSpice manual.

You can simulate flicker noise sources in the noise analysis by including values
for the parameters KF and AF on the appropriate device model statements.

and there are some parameters for thermal noise. at last by using .noise analysis you can find the input-referred noise.

Regards,
EZT
 

Re: can any one tell me whether hspice can simulate KT/C noi

KT/C noise is not capacitor noise. capacitor will not have noise.

Yibin.
 

Hspice cannot simulate noise in time domain, and capacitor doesnt generate noise

ablue
 

KT/C means thermal noise, you can check hspice maual to see if it can simulate this kind of noise.
 

use spectre, it can do
 

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