I am working with the JM32 MCU and using the ADC in 12bit mode.
I see that when I change the ADC channel from one source to another the first sample seems a bit off (around 2-3 LSB's) other samples are very accurate (less than 1/2 LSB). I'm checking this with a very accurate calibrator unit.
Is this a known issue?
Does the ADC hardware short the holding capacitor before a new sample is taken?
Help is highly appriciated.