SI8920BC noise tones on
Isolation Forum - Isolator
I have attached 2 images: one shows the base-line spectral noise of my system (via FFT on a 933kSPS signal stream) and one with the SI8920BC with shorted inputs.
Those tones vary widely within the spectrum. I have a PCB where, by mere luck, all tones are so high, they are swallowed by the aliasing filter. Then i have a PCB where all are right in my spectrum of interest.
If anyone knows where this tone comes from and how to influence the frequency of this disturbance, i am all ears.
Oct 19 2020, 12:59 PM