This data acquisition add-on module for Arduino UNO microcontrollers features an Analog Devices AD7689 ADC. It supports 8 unipolar channels or 4 pseudo-differential channels, with a resolution of 16 bits, and maximum acquisition speed of 250 kS/s. The module is designed to be used with the internal 2.5V or 4.096V reference voltages. An analog supply voltage of 5V is generated on board. All inputs are ESD protected and 5V tolerant.
The ADC uses SPI (Arduino UNO pins 11 - 13) with Slave Select connected to pin 10. A library for the Arduino ecosystem is available.