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ISO7221B: ISO7221B internal oscillator

Yuta Nishie
Genius 3430 points
Part Number: ISO7221B
Other Parts Discussed in Thread: ISO6721, ISO7721

What is the frequency of the ISO7221B Internal oscillator?

  • 0
    TI__Guru 53115 points

    Hi Yuta,

    I am assuming you are referring to the oscillator block shown in the block diagram under section 8.2 of ISO7221B datasheet. The frequency of this oscillator is ~100kHz. Let me know if there is any concern that customer has on this internal clock.

    ISO7221B is one of our older family of digital isolators. I would recommend customer to use the latest generation of digital isolators to offer much better overall performance. ISO7721 and ISO6721 are our equivalent latest digital isolator devices that are pin-compatible to ISO7221B. Thanks.

    Regards,
    Koteshwar Rao

  • 0 in reply to Koteshwar Rao
    Genius 3430 points

    Hi koteshwar,

    Thank you for your reply.
    I am referring to the block diagram under section 9.2 of ISO7221B datasheet.

    I understand that the frequency is 100kHz.

    I will consider ISO 7721 or ISO6721, too.

    Best Regards,

    Nishie