Customer is going to use ADC CH0 and CH1 for differential input with full scale input range -Vref ~ Vref. I believe I should set bit 15 in ADC gain register for targeting operation. What about bit 14? Is it Don't care?
In addition, I'm a bit confused about full scale input voltage. When I set the FS range at -Vref ~ Vref, the voltage VDM = 2x (VDM/2) would be stored in ADC data register, and VDM should be between -2.5V and 2.5V. Is my understanding correct?