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ISO1211: Frequency carrier across the barrier and radiation emission

Joselito Go
Intellectual 2970 points
Part Number: ISO1211

Hi Experts,

Good day.

May we know what is the frequency of the carrier through the isolation barrier? and is there any data about radiated emission (electric field)?

Keep safe.

Regards,

Josel

  • +1
    TI__Expert 8030 points

    Hi Joselito,

    Thanks for reaching out.

    The frequency of the carrier through the isolation barrier is 450 MHz. 

    We have not tested radiated emissions for the ISO1211, but we do expect radiated emissions test data for this device to be similar to the radiated emissions test data for the ISO77xx. Here is radiated emissions test data for the ISO77xx:

    Regards,

    Kenneth

  • 0 in reply to Kenneth Arnold
    TI__Intellectual 2970 points

    Hi Kenneth,

    Could you confirm that ISO1211 doesn't incorporate advanced circuit techniques to minimize the radiated
    emissions due to the high-frequency carrier and IO buffer switching, unlike the ISO77xx? If so, we might expect higher radiated emissions.

    Keep safe.

    Regards,

    Josel

  • 0 in reply to Joselito Go
    TI__Expert 8030 points

    Hi Joselito,

    Both the ISO1211 and the ISO77xx incorporate the same techniques to minimize radiated emissions. This includes techniques such as Spread Spectrum Modulation.

    Regards,

    Kenneth