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AD7280a Cell/AUX ADC value incorrect

Question asked by aks on Mar 9, 2017
Latest reply on Apr 27, 2017 by Cman

We are developing a prototype of Li-ion[12Cell] Balancer using AD7280a for one of our customer.

 

Initially we used fixed resistors to generate cell voltage, so voltage on each cell wrt to lower cell is 1.80V

When reading cell/aux adc register, we see varying and incorrect values like 1558,687,0,3584,2078....

We tried using Li-ion cell stack and also tried by changing Cell1 fixed resistor to pot, but result is same.

 

I have attached the code and the schematic.

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