The ADS8339 is designed to operate from an analog supply voltage range between 4.5 V and 5.5 V and a digital supply voltage range between 2.375 V and 5.5 V. Both supplies must be well regulated. The analog supply must always be greater than or equal to the digital supply. A 1-μF ceramic decoupling capacitor is required at each supply pin and must be placed as close as possible to the device.