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ad5421 outputs a lower current

Question asked by orchiddew on Sep 25, 2013
Latest reply on Sep 30, 2013 by orchiddew



I write the DAC register 0x0000 it outputs a 2.8mA current and when write 0xffff it outputs a 19,2mA current, and 0x8000 it outputs 10.8mA.

the circuit is recommended. and I test the Ref1out=2.5V,Ref2out=1.21V.I can reads the faults register and found Vloop 12V bit and Vloop 6V bit set high. the question is I measured the Vloop voltage =0.5V. but my input voltage=20V


what's the problem may happen and why?


Best wishes