SWCU194 March 2023 CC1314R10 , CC1354P10 , CC1354R10 , CC2674P10 , CC2674R10
The AUX analog-capable I/Os, AUXIO19 to AUXIO26, and some internal chip voltages can connect to the ADC input.
By default, the input is scaled down internally by a factor of 1408 / 4095 before it is used in the ADC. It is possible to disable down-scaling of the ADC input for increased resolution at the cost of reduced input range.
Disabling down-scaling changes the maximum input rating of the ADC input. Higher voltages can damage the ADC. See the device-specific data sheet.
The user must ensure that the ADC input has only one driver at all times. To avoid shorting signals together internally, TI provides ROM-based functions that ensure a break-before-make switching of the internal muxes.