Other Parts Discussed in Thread: REF3425,
The max differential nonlinearity is 1 LSB in the datasheet. Customer tested that, with REF3425 reference, the output is supposed to be 963.90mv with code=9000. But, it is actually 965mv which the code should be 9009. Customer think the nonlinearity is the 9bits which is much higher the 1 LSB differential nonlinearity in datasheet. I think the 9bits should include the offset error. Is it correct? What is the specific definition of differential nonlinearity in datasheet?