ANALOG DEVICES AD7703 English products handbook
Datasheet
The AD7703 is a 20-bit ADC that uses a S-D conversion technique. It features a monolithic 16-bit ADC, 0.0015% linearity error, on-chip self-calibration circuitry, programmable low-pass filter, 0V to +2.5V or -2.5V analog input range, 4kSPS output data rate, flexible serial interface, and ultralow power consumption.