Posted on November 19, 2012 at 20:20Experiencing a 500Hz 60mVpp on the ADC input. The noise goes away when the processor is in standby or processor is not programmed, but still is biased on. They may be a redundant question from previous posts, but is this likely from not having seperate analog and digital ground planes or something else? The work around was to put a .1Uf cap and 10Kohm resiter on the buffer amp output.
#adc-noise
