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

[maldiniz]

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!

 

[maldiniz]

And the equivalent bandwidth is 100MHz

 

[dedalus]

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).

 

[maldiniz]

that's great! I'll try it out soon. Thanks a lot!!!