Analog Devices' AD7903 is a dual 16-bit, successive approximation, analog-to-digital converter (ADC) that operates from a single power supply, VDDx, per ADC. It contains two low-power, high-speed, 16-bit sampling ADCs and a versatile serial interface port. On the CNVx rising edge, the AD7903 samples the voltage difference between the INx+ and INx− pins. The voltages on these pins usually swing in opposite phases between 0 V and V_REF. The externally-applied reference voltage of the REFx pins (V_REF) can be set independently from the supply voltage pins, VDDx. The power of the device scales linearly with throughput.

The AD7902 is a dual 16-bit, successive approximation, analog-to-digital converter (ADC) that operates from a single power supply, VDDx, per ADC. It contains two low-power, high-speed, 16-bit sampling ADCs and a versatile serial port interface (SPI). On the CNVx rising edge, the AD7902 samples an analog input IN+ in the range of 0 V to V_REF with respect to a ground sense IN−. The externally applied reference voltage of the REFx pins (V_REF) can be set independently from the supply voltage pins, VDDx. The power of the device scales linearly with throughput.