ADuCM360 can select internal reference (1.2V) or external reference (~AVDD).
When I select internal reference, ADC input voltage ranges are ±VREF@G=1, ±500mV@G=2, ±250mV@G=4, ...
and external reference, ranges are ±VREF@G=1, ±500mV@G=2, ±250mV@G=4, ...
Q1, Is VREF effective only at the time of G=1?
Q2, Is an input voltage range decided regardless of an internal/external reference at G>=2?