Dear Specialists,
My customer is considering DAC60508 and has a question.
I would be grateful if you could advise.
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I'd like to use an external REF(3.3V)
(1) When the device powers up, CONFIG Resister bit[8] is 0, this means internal reference is connected and external reference is supplied.
Is there any problem?
(2) When voltage (3.3V) is applied to the REF pin before the device power up, it seems to exceed the absolute maximum rating.(-0.3V ~ Vdd+0.3V)
Is it correct?
If so, does the circuit need to connect the REF pin to an external reference after the device on.
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I appreciate your great help in advance.
Best regards,
Shinichi