ZHCS311D May 2009 – January 2018 ADS1113 , ADS1114 , ADS1115
PRODUCTION DATA.
Either float unused analog inputs, or tie the unused analog inputs to midsupply or VDD. Connecting unused analog inputs to GND is possible, but may yield higher leakage currents than the previous options.
Either float NC (not-connected) pins, or tie the NC pins to GND. If the ALERT/RDY output pin is not used, leave the pin unconnected or tie the pin to VDD using a weak pullup resistor.