ADUM141E0BRQZ Grounding Isolation


I have a system that uses ADUM141E0BRQZ isolators on all digital outputs to isolate our system ground from digital IO ground. We have a potential customer that will use the system in a way that will basically tie GND1 and GND2 together. Does anyone know if that will cause an issue with the ADUM141? I'm trying to avoid testing it just to find out and possibly damaging a system.

Thank you

  • +1
    •  Analog Employees 
    on Sep 18, 2020 4:58 PM 2 months ago


    The isolator itself doesn't care if GND1 and GND2 tied together. It will signal away happily. However, any safety function the galvanic isolation offered, or comms signal integrity advantage of breaking the ground loop will disappear when the GNDx pins are externally shorted.