Post Go back to editing

ADuM4401 isolator chip power down at VDD2 pin

Thread Summary

The user experiences a voltage drop at VDD2 (pin 16) of the ADuM4401 Isolator when grounding the input pins (pin 11 and pin 9). The support engineer suggests that VID is a high impedance input and should not affect VDD2, and asks if the issue is seen on multiple devices and if VOD (pin 6) follows VID.
AI Generated Content

we use ADuM4401 Isolator chip with 3.3V power supply at VDD2 pin 16, when we short the input to ground pin 11& pin 9 ... the power supply at VDD2 pin 16 is pulling down to 2.8 v and gradually increasing back to 3.3 V. Why is this happening? anyone there to help?

Before You Switch


Switching languages will make ADI Explorer unavailable. Resume your session by switching back to English and reopening ADI Explorer.