I'm using the ADUM1401 in an application where VDD1 is up long before VDD2. VID is pulled up to VDD2 and when I monitor this signal during startup I can see it following VDD2 as expected.
When looking at VOD, this signal is high when VDD2 is unpowered. But during the ramp up of VDD2, a short (5-10 µs) glitch occurs on VOD, which is undesired, because this goes into a falling-edge triggered circuit. What is the cause of this glitch and is there any way to prevent this?