The devices sample the voltage difference (AIN_nP – AIN_nGND) between the selected analog input channel
and the AIN_nGND pin. The devices allow a ±0.1-V range on the AIN_nGND pin for all analog input channels.
This feature is useful in modular systems where the sensor or signal conditioning block is further away from the
ADC on the board and when a difference in the ground potential of the sensor or signal conditioner from the ADC
ground is possible. In such cases, TI recommends running separate wires from the AIN_nGND pin of the device
to the sensor or signal conditioning ground.
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