hi ADI engineer:
i found a problem when using AD5791, when initialing AD5791, the output voltage is VREFN, i hope the output voltage is not VREFN when intialization. can you provibe me some methods?
thank you very much!
Upon power-up, the output is tri-stated through a 6kohm resistor to ground. If you remove the tristate by clearing the DACTRI and OPGND bits, the output will automatically go to VREFN as the default DAC registers is "00000".
If you want to initialize at a different value other than VREFN, you should program the DAC registers first before clearing DACTRI and OPGND.
thank you very much！
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