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AD7091R-4 offset

Question asked by Terumasa on Feb 3, 2015
Latest reply on Feb 22, 2015 by KarenNE

Hello

 

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

 

Regards,

Terumasa

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