for a few bucks, you can roll your own: https://www.analog.com/en/analog-dialogue/raqs/raq-issue-154.html https://www.analog.com/en/analog-dialogue/raqs/raq-is

for a few bucks, you can roll your own: https://www.analog.com/en/analog-dialogue/raqs/raq-issue-154.html https://www.analog.com/en/analog-dialogue/raqs/raq-issue-154... https://circuitdigest.com/electronic-circuits/simple-white-noise-generator-circuit-diagram https://circuitdigest.com/electronic-circuits/simple-white-n...