9.1.3 Unused Inputs and Outputs

To minimize leakage currents on the analog inputs, leave unused analog and reference inputs floating, or connect the inputs to mid-supply or to AVDD. Connecting unused analog or reference inputs to AGND is possible as well, but can yield higher leakage currents on other analog inputs than the previously mentioned options.

Do not float unused digital inputs; excessive power-supply leakage current can result. Tie all unused digital inputs to the appropriate levels, DVDD or DGND, even when in power-down mode. Connections for unused digital pins are:

• Tie the RESET pin to DVDD if the RESET pin is not used
• If the DRDY output is not used, leave the DRDY pin unconnected or tie the DRDY pin to DVDD using a weak pullup resistor