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?
Sorry for my mistake.
When these pins are pulled down, the case temperature rise up to 120degC. On the other hand, when pulled up, it is 25degC
One possible reason is that customer is using ADuM240D1. with this part, the internal oscillator circuit works when input is logic low. this will increase the power consumption, especially C and D channel are always low.