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ADE7880 - Questions on neutral current mismatch feature

Question asked by karens on Oct 29, 2014
Latest reply on Oct 31, 2014 by dlath



I have a questions on ADE7880 neutral current mismatch feature.


Is ISUM register the 24 bits or 28 bits register?


On the data sheet, revB, page 37, it shows register ISUM is 28 bits, bit27 is the sign bit, then the real data should be 27 bits. But on page 88, registers list, it indicates that ISUM is 24 bits signed register, I assume bit 23 is the sign bit, real data then should be 23 bits. Which one is correct?