AD7980 16-Bit 1MSPS PulSAR® ADCs Analog Devices AD7980 1MSPS PulSAR® ADCs feature low power, high speed, 16-bit sampling ADCs, and a versatile serial interface port. The AD7980 ADCs sample analog input IN+ between 0V to REF with respect to a ground sense IN− on the CNV rising edge. The device's reference voltage, REF, is applied externally and can be set independent of the supply voltage, VDD. Operating from a single power supply, VDD, AD7980 power scales linearly with throughput up to 1MSPS.