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LM34936 Dith function verify

Other Parts Discussed in Thread: LM34936


I have a question and when LM34936 workable, I can hear current noise and the Dith pin connector 22nf Cap, if Dith pin connect to GND, this noise disappear.

Check the LM34936 datasheet.  if connect Dith with Cap to Gnd can effectively reduce peak EMI.  does it effect the function or others if Dith pin connect to GND?