Best way to add noise to circuit

[Renan_OSU]

Hello,

I currently have a circuit built around the AD8333 demodulator which outputs the something close to a dc voltage when switch is on. I want to add noise before my demodulation and still get the same nice output and have been having a lot of trouble with that. Could someone help me? Attached is the circuit with a scope where you can see the output I am shooting for.

[Tien_P]

Hi Renan,

There is a thermal noise source in the "Sources" group under the "Signal voltage source" family.

You can also try to use this noise source created in LabVIEW:

https://decibel.ni.com/content/docs/DOC-28305