Thermal noise generator

[barbara71]

Hello,

we are using a thermal noise source (THERMAL_NOISE) in our circuit with Multisim 11. We setted up as parameters a resistance of 1 MOhm, a temperature of 25°C, a Bandwidth of 10KHz and a noise ratio of 233000. We are measuring the output voltage with a measurement probe, which shows an rms voltage of 3V as expected, but a frequency of 2.5MHz, which is much higher than the bandwidth of the noise source. What is the meaning of this frequency value?

Best regards,

Barbara

[alamanna]

UPDATE: After creating this thread, the user opened a support request on the same topic. The solution is explained in the following document, written by the application engineer who dealt with it.

Why Don't You See the Bandwidth Thermal Noise Values When Simulating It?