Q
Can the ADC inputs exceed the reference voltage or go below ground?
A
The ADC inputs should not exceed the reference voltage or go below ground by
more than 0.3V as this may result in the ADC being damaged. If this is a common condition then
schottky diodes should be used to protect the inputs and limit them to <0.3V.
The maximum input current to the analog input is +/-10mA.