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ADS7223, ADS7263 and ADS8363 data-sheet question

Iron Huang
Prodigy 70 points

Hi,

Could you please help me to check the content of datasheet?

Bits[9:0] default value is 1FFh? why 1FFh = 2.5V?


For Midscale - 1LSB, the following is my equation.

    AD8363 : 2.5-(5/65536) = 2.499924, same as datasheet

    AD7263 : 2.5-(5/16384) = 2.499695，not equal to 2.499847

    AD7223 : 2.5-(5/4096)   = 2.498779，not equal to 2.499390

Why?

Thanks.

BR,
Iron.Huang

  • 0
    TI__Mastermind 24940 points
    Hello Iron.Huang
    I am terribly sorry, there does seem to be inaccuracies. Thank you bringing this to our attention; we will get this corrected right away.
    As for your first question, please note this is referring to the DAC configuration; but it should be 3FF, not the listed 1FF.
    For the 1 LSB calculations, again, I am very sorry; but your calculations are correct; it seems that the listed numbers are not accurate.
    These issues will be looked at right away, we are very sorry

    Thank you
    Cynthia