ADuM110N is suggested as a pin2pin replacement for ADuM1100.
The first one seems to have a feature which is not mentioned in the second's DS: fail-safe output.
Does ADuM1100 provides any mechanism of setting the outputs to a certain value…
Also Weidong, the ADuM1100/1200 are older generation products. The latest generation is ADuM110N (1-ch) and ADuM120N (2-ch). They are more cost-effective and have better performance and robustness.
It looks like a reflection on the line could be causing the eye diagram to fail,
The reflection is measured on the HDMI output which would lead me to believe the issue is at the connection from the isolators to the HDMI output connector, rather…