AnsweredAssumed Answered

zero code error and offset error of AD5620

Question asked by dchan on Mar 2, 2018
Latest reply on Mar 7, 2018 by isantos

I am using AD5620, the expected Vout should be 0.8V according to the equation: Vout = 2 x Vrefout x (D/2^N), where D=1310, but I measured the Vout is around 0.84-0.85V. And I measured the zero code error is around 0.3V.

 I checked the datasheet where the zero code error can be as high as 8mV, offset error can be as high as +/-9mV. To my application, it is quite high.

 

So I want to know if there is any simple method, rather than changing to another part with smaller error, to compensate these zero code and offset errors?

 

Thanks!

Danny

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