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OPT3001: I2C data speed

Gene Qiu
Intellectual 1720 points
Part Number: OPT3001

Hi Team

Q1:As i notice on datasheet, there is 400khz/2.6MHz for I2C clock frequency,  then what is the maximum data speed of real I2C output frequency?  Based on my understanding, the clock is fast, but conversion needs 100ms/800ms to deal with the data inside the chip, that makes the real output data speed like 100ms/800ms?

Q2: What specific things does chip do in 100ms and 800ms?

Q3: For reducing 50Hz/60Hz light bulb effect, what was the "average filtering" in it? Or what we specificly do to make the 50/60Hz light bulb not matter

Best regards

Gene

  • 0
    TI__Mastermind 25815 points

    Hi Gene,

    1. That is correct. Data rate determined by device conversion time

    2. I'm not sure I understand the question here, but this from datasheet may help

    Total integration time(5) spec on page 5 and the footnote

    (5) The conversion time, from start of conversion until the data are ready to be read, is the integration time plus 3 ms

    3. This is due to the integration time being much longer than the 50/60 Hz

    Best,

    Alex