Awesome board this ltc1859.
I am using ethernet udp on the ethernet shield and they work fine alone but together the ethernet shield reports the wrong IP and wrong port.
The 16 bit adc board apparently works ok
Without the ethernet shield the 16 bit adc reports different voltages than with the ethernet connected.
At this point I didnt test with voltage sources connected but reporting different voltages may raise a red flag too.
Gentlemen! Any ideas?