ADC Gain and Offset selection values register
| GAIN_OFFSET0 | gain / offset used in ADC single negative mode with Vinput range = 1.2V |
| GAIN_OFFSET1 | gain / offset used in ADC single positive mode with Vinput range = 1.2V |
| GAIN_OFFSET2 | gain / offset used in ADC differential mode with Vinput range = 1.2V |
| GAIN_OFFSET3 | gain / offset used in ADC single negative mode with Vinput range = 2.4V |
| GAIN_OFFSET4 | gain / offset used in ADC single positive mode with Vinput range = 2.4V |
| GAIN_OFFSET5 | gain / offset used in ADC differential mode with Vinput range = 2.4V |
| GAIN_OFFSET6 | gain / offset used in ADC single negative mode with Vinput range = 3.6V |
| GAIN_OFFSET7 | gain / offset used in ADC single positive mode with Vinput range = 3.6V |
| GAIN_OFFSET8 | gain / offset used in ADC differential mode with Vinput range = 3.6V |