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AD3514R Output issue

Category: Hardware
Product Number: AD3541R

Hi,

I am experiencing an issue with the output of the AD3514R DAC. 

No matter what value I write to the DAC input register the output always goes to the negative rail. My desired output is +/- 5V and all I can get out the DAC is -5 V. When I change the range to 0-5 V the output goes to -3.8V. At power up before setting a DAC value the output is 0 V. 

Is the output stage broken? If so what can can be a likely cause? As far as I can tell it hasn't suffered any short circuits or over voltage incidents. 

Many thanks for any assistance.

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