How to simulate the thermal noise of a resistor in Cadence?

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Hi, guys! I'm now trying to design an amplifier to amplify thermal noise of a resistor, say, 1GΩ. I'm quite new to this topic as well as the software-Cadence. The simulation is supposed to be done by Spectre. But how can I simulate the thermal noise? Can anybody help?

Thanks a lot!
 

And the equivalent bandwidth is 100MHz
 

Re: How to simulate the thermal noise of a resistor in Caden

Schematic:


Noise analysis setup:


In analog environment add next outputs:

nsd = value(getData("out" ?result "noise") 0)
n_rms = sqrt(nsd*nsd*100M)

where nsd - square root of noise spectral density (V/sqrt(Hz)), n_rms - rms noise of resistor (V).
 
that's great! I'll try it out soon. Thanks a lot!!!
 

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