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ISO7821: Is there any data for common-mode noise test ?

Hung Ching Hsu
Expert 3086 points
Part Number: ISO7821

Hi Team

My customer is using ISO7821FDWWR with THVD1551DGKR (RS485 interface). 

The customer wants to know if TI did common-mode noise test for ISO7821FDWWR, and if yes, is it possible to provide the test method and the test result?

I only found CMTI parameter in the datasheet, which is 100kV/us, is this value help us to explain the common-mode noise behavior?

Thanks. 

  • 0
    TI__Mastermind 49445 points

    Hi Hung,

    Yes, CMTI is one of the common-mode noise tests that we perform at device level and its test method as well as the results are provided in the datasheet.

    Common-mode noise is a generic term used to referred to various kinds of interference and disturbance many of which are tested as part of customer end product EMC testing. If customer is specifically referring to any EMC test, please do let us know which test are they looking at and what are their pass requirements. Thanks.

    Regards,
    Koteshwar Rao