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The out of AD7989-5 is wrong

Question asked by Lghwd on Jun 24, 2018
Latest reply on Jun 24, 2018 by Gnib

The power of ad7989-5 must be 2.5V? i use 3.3V, and then i use single mode directly ,the result is that if ain+ is under 2.0v, the adc out is wrong,  how to solve the problem on pcb board?, 3.3V or  single mode?