The LTC®2418 is a high resolution, 24-bit ΔΣ ADC with 5ppm INL and 5μV offset. Channel selection is programmed through a simple serial interface. Since there is no latency, each conversion is valid, even after a change in input channel.
DC2026C - Linduino One Isolated USB Demo Board: An Arduino- and QuikEval-Compatible Code Development Platform