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Is AD5761R allow using a unipolar +21V supply to output 0 to 20V precisely?

Question asked by Hanpeng on Jul 26, 2017
Latest reply on Aug 11, 2017 by musach



I am trying to design a system that needs 0 to 20V precise output span. I just get confused that do we need 1V headroom on the negative supply when outputing a unipolar voltage? The datasheet uses +6V/-1V supplies for the testing of +5V span. So in my case, do I need +21V/-1V supplies or a +21V/0V unipolar supply will be enough?


Thanks a lot,