Could you give me your advice about value of offset error of AD7091R-4 ?
Datasheet says +-1.5mV offset error at internal reference.
What is value of offset error at 5V external reference ?
As the result of test, offset error is about 1LSB at 2.5V external reference on evaluation board.
But offset error is about ~6LSB at 5V external reference on evalaution board.
(External power supply unit is used as reference).
Please let me know your advice