AD7631 is a 18-bit, 250 kSPS, differential programmable input PulSAR® ADC with multiple input ranges, 250 kSPS throughput, 18-bit resolution with no missing codes, 102.5 dB dynamic range, 101 dB SNR, -112 dB THD, iCMOS® process, 5 V internal reference, 5 V/3.3 V interface, SPI/QSPI™/MICROWIRE™/DSP compatible, Pb-free, 48-lead LQFP and 48-lead LFCSP (7 mm × 7 mm) package, suitable for process controls, high speed data acquisition, digital signal processing and other applications.