(ADuM3210/1)Do you have any concern to insert ferrite beads?

Hi !

I have a question for ADuM321x.

Our customer is thinking to insert ferrite beads to improve EMC tolerance.

Do you have any concern to insert ferrite beads?

The value of the ferrite is not fixed yet.

Best regards.

Kawa

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  • 0
    •  Analog Employees 
    on Feb 24, 2017 2:37 AM

    Hi Kawa,

    Ferrites aren't required for the standard data isolators but no harm in experimenting. Good bypassing is needed for data integrity though. Can they keep the bypass capacitors closest to the ADuM3210/11 and not have the ferrites in the traces from cap to VDD and GND?

    The ADuM3210/11 have strong output buffers. They could experiment with RC filters on the VOA and VOB pins to slow the edges if they are operating at lower data rates.

    Regards,

    Jason

Reply
  • 0
    •  Analog Employees 
    on Feb 24, 2017 2:37 AM

    Hi Kawa,

    Ferrites aren't required for the standard data isolators but no harm in experimenting. Good bypassing is needed for data integrity though. Can they keep the bypass capacitors closest to the ADuM3210/11 and not have the ferrites in the traces from cap to VDD and GND?

    The ADuM3210/11 have strong output buffers. They could experiment with RC filters on the VOA and VOB pins to slow the edges if they are operating at lower data rates.

    Regards,

    Jason

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