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ADS8634: Minimum SCLK frequency

Hirotaka Matsumoto
Guru 27585 points
Part Number: ADS8634

Hi all

Would you mind if we ask ADS8634?
How much is the minimum SCLK frequency?
Or, is there the regulation for the minimum SCLK?

Kind regards,

Hirotaka Matsumoto

  • 0
    TI__Mastermind 25020 points
    Hello,

    Looking at the datasheet, I can see why there is confusion as to the limit on SCLK. The frequency is listed based on the DVDD used, either 16Mhz for 1.8V or 20Mhz otherwise. The pulse duration, in seconds, is also listed for SCLK, which is not consistent with these numbers.
    I would suggest using the more conservative parameters, which would be frequency parameter.
    Meanwhile I will look into this and clarify.
    Regards
    Cynthia
  • 0 in reply to Cynthia
    Guru 27585 points

    Cynthia san

    Thank you for your reply.
    We need the minimum value of it, so we wait for your reply.

    Kind regards,

    Hirotaka Matsumoto

  • 0 in reply to Cynthia
    Guru 27585 points

    Cynthia san

    By this weekend, Could give us the reply how much the minimum SCLK is? 
    If it is difficult to give us the reply with exact value, could you let us know approx value?

    Kind regards,

    Hirotaka Matsumoto

  • 0 in reply to Hirotaka Matsumoto
    TI__Mastermind 25020 points

    Hirotaka san

    Apologies for the late response, it seems that this data was not readily available and we had to do some digging. If you would like, we can take this ofline to speak about your specific application and provide support. We could run simulations with your desired clock frequency to provide a clearer answer of device performance.

    But to provide an answer to your question, after speaking with the designers, concider a minimum of 1Mhz.

    Regards

    Cynthia

  • 0 in reply to Cynthia
    Guru 27585 points

    Cynthia

    Thank you so much for your reply.
    Ok, we consider that  a minimum is 1Mhz.

    Kind regards,

    Hirotaka Matsumoto