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Some questions for your AD7792/AD7793s

Question asked by Kaos on Mar 18, 2013
Latest reply on Mar 20, 2013 by Kaos

Dear Sir/Madam,


I just have some questions for your AD7792/7793s.


Question-A: As for status register SR6(ERR) bit,


1)Do you have any explanations except for over range/under range of input?
  eg. Fail Analo to Digital coversion though there is the input within the range.
      Broken ADC.....


2)When it is zero-calibration or full scale-calibration, can I set up this bit SR6?
  If so, SR6=1, does this mean calibration fail, correct?
  And should I do calibration many times before SR6=0(reset)?


Question-B:As for your offset register and full scale register,


1)I can write any data at first time. How can I deside the write-data? Do you have a good instruction? I would like to know the affecti for convertion data.


Question-C:As for not used pins,


1)I will not use REFIN(+)/AIN3(+), and REFIN(-)/AIN(-) pins. These pins will connect to GND, correct? Or put more than 0.1V?


Thanks Kaos