Please see attached picture of ADuM240D waveforms as C1(yellow):input and C2(blue):output. It seems that the duty cycle is changed and the high level is also changed from 3.4V to 3.2V. Its frequency is 50kHz and ADuM240D must be available between DC to 150Mbps. Could you please give me any information to improve?
Good power supply quality is very important for isolator to work properly. Another point i would suggest is the connection of DISABLE pin. although there is pull down inside, but its strength is weak. Short it to GND1 is a better choice.
Thank you very much for your support. It have been improved by shorting DISABLE pi to GND1 pin. The customer would like to know why it have been done and the inside equivalent schematic around DISABLE pin. Could you please let us know?