dc1718a DC1718A DC1718A LTC2471 Selectable 208sps/833sps, 16-Bit I2C Delta Sigma ADCs with 10ppm/C Max Precision Reference (Requires DC590B) DC1718A: Demo Board for the LTC2471 Selectable 208sps/833sps, 16-Bit I2C ΔΣ ADCs with 10ppm/°C Max Precision Reference.