ADS868x 16-Bit SAR Analog-to-Digital Converter Texas Instruments ADS868x 16-Bit 4 or 8-Channel SAR Analog-to-Digital Converters (ADC) that are an integrated data acquisition system based on a 16-bit successive approximation (SAR) analog-to-digital converter (ADC), operating at a throughput of 500kSPS. The devices feature integrated analog front-end circuitry for each input channel with overvoltage protection up to ±20V, a four or eight-channel multiplexer with automatic and manual scanning modes, and an on-chip, 4.096V reference with low temperature drift.