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Original question:

ISO7721-Q1: What is the working frequency

ISO7721-Q1: Frequency of intern Oscillator

Falko Eildermann
Prodigy 20 points
Part Number: ISO7721-Q1

Hi,

we are working on improving our PCB Layout in terms of electro magnetic compability. Therefore we are writing a list with all frequencies genereated by electrical parts. In the datasheet an oscillator is mentioned. What is the frequency of this oscillator?

Greetings

  • 0
    TI__Mastermind 49445 points

    Hi Falko,

    Thank you for reaching out to us with your question.
    The internal oscillator frequency in ISO7721-Q1 is ~450MHz. This internal oscillator is used as a carrier to transmit data across the isolation barrier due to which the power levels of this carrier is going to be significantly low. We usually do not expect this to be an issue for most applications.

    Could you please share more details about your application so that I understand the situation better? Thanks.

    Regards,
    Koteshwar Rao