Hello,
I'm developing an application in which I need to constantly sample data from three different channels, both on ADC1 and ADC2. The three channels are read at a final speed of 7 KHz.
What I see is that, while ADC2 is very accurate (around +- 1.5 LSB), ADC1 is less accurate, switch around +-5 LSB, no matter if I slow the ADC, put a bigger capacitor (even 120 nF).
ADC1 and ADC2 are used with RTC domain. Is there any reason for which ADC1 should behave differently from ADC1, in particular being less accurate?
Thanks,
Mattia