This device is designed to operate from an input supply with a voltage range between 1.6
V and 6.5 V. An input supply capacitor is not required for this device; however, if
the input supply is noisy, then good analog practice is to place a 0.1-µF capacitor
between the VDD pin and the GND pin. Please be sure to externally connect VDD1 to
VDD2 as the device will not function if these pins are not connected.