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  • TI Thinks Resolved

ISO7741: Carrier signal frequency through barrier

Part Number: ISO7741

Hello,

The customer are facing EMI issue and are looking for the source.

For the investigation, the customer would like to know ISO7741 carrier signal frequency. It would be helpful if we can know it.

Best regards,

Toshihiro Watanabe

  • Hi Toshihiro,

    We generally do not disclose the internal frequencies of our isolators on the public forum. I can contact you via email to discuss this.
    Could you give more details on the EMI issue your customer is seeing? Generally we see very little emissions being generated from the ISO7741, but I understand that even small amounts can have effects for very noise sensitive applications. In our tests we have seen ISO7741 pass CISPR22 Class B.

    Best regards,
    Dan
  • In reply to Dan Kisling:

    This issue is now being handled offline due to discussion of confidential information.
    Dan

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