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.
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.