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AD5620 or AD5640- Using Vfb to control the DAC output

Question asked by FreddyS on Dec 2, 2014
Latest reply on Dec 2, 2014 by musach

 

Hello,

Using the AD5620 or AD5640 with Vref=1.25v.

1- According to the datasheet Vref pin must be shorted with Vout and it gives a maximum output voltage of 2xVref with resolution of 2xVref/2^N.

Question: Is there a possibility of connecting Vfb to GND or unconnected or any other option for getting maximum output voltage of Vref with resolution of Vref/2^N?

 

Thanks

 

F. 

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