AnsweredAssumed Answered

AD7124 Wrong Read Problem

Question asked by beraicli on Mar 20, 2018
Latest reply on Apr 9, 2018 by JellenieR



I am driving an AD7124-8 with given driving pattern for RTD measurment in the datasheet. I can reach each register. I both verified the flow from testbench and oscilloscope. Besides, I can observe the excitation current I set on the card.


As I can reach any registers, however, I am also reaching and reading something at the "Data Register". The data I obtain is wrong and changes everytime as I hard reset the device. I am sure that I write at PGA, but changing PGA does not change the output of the "Data Register.


What might be wrong with that?


Thanks in advance,