The ADC multiplexer provides selectable
connections to the following:
- External pins BAT, BAT_SNS, TS
- Internal temperature sensor
- Internal reference voltages
- Internal 1.8-V regulator
- VSS ground reference input
In addition, the multiplexer can independently enable the TS input connection
to the internal thermistor biasing circuitry, and enables the user to short the
multiplexer inputs for test and calibration purposes.