The ADS8688IDBT is a 16-bit Analogue-to-digital Converter operates at a throughput of 500kSPS. The successive approximation ADC features integrated analogue front-end circuitry for each input channel with overvoltage protection up to ±20V, 8-channel multiplexer with automatic and manual scanning modes and an on-chip, 4.096V reference with low temperature drift. This ADC operates on a single 5V analogue supply. The gain of the analogue front-end for all input ranges is accurately trimmed to ensure a high dc precision. The input range selection is software-programmable and independent for each channel. The ADC offers a 1MR constant resistive input impedance irrespective of the selected input range. The ADC offers a simple SPI-compatible serial interface to the digital host and also support daisy-chaining of multiple devices. The digital supply operates from 1.65V to 5.25V, enabling direct interface to a wide range of host controllers.