Post Go back to editing

About AD5671R


As is shown above,when Vlogic and VDD supplies of 3.3 V,all the channels can output correctly except the maximum voltage is 3.2 V.However,when Vlogic and VDD supplies of 5 V,only some of the channels can output from 3 V to 4.9 V.When I send data byte smaller than 0x99f0,which try to make the channel output the voltage lower than 3V,I failed and cannot control  AD5671R again. 

Is there anything wrong in my circuit?

Best Regards