TSSOP (DBT)-38-62.08 mm² 9.7 x 6.4

The ADS8688AT is an 8-channel, integrated data acquisition system based on a 16-bit successive approximation (SAR) analog-to-digital converter (ADC), operating at a throughput of up to 500 kSPS. The device features integrated analog front-end circuitry for each input channel with up to ±20-V overvoltage protection, an 8-channel multiplexer with automatic and manual scanning modes, and an integrated 4.096-V reference with low temperature drift.

Operating on a single 5-V analog supply, each input channel can support multiple true bipolar as well as unipolar input ranges. Each input range is software-programmable and independent for each channel, enabling maximum system flexibility. The analog front-end gain is accurately trimmed to ensure high dc precision for all input ranges. The device offers a 1-MΩ constant resistive input impedance for any selected input range, enabling direct sensor connection to the device.

The ADS8688AT offers a simple SPI-compatible serial interface to the digital host and also supports daisy-chaining of multiple devices. The digital supply operates from 1.65 V to 5.25 V, enabling direct interface to a wide range of host controllers.