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DAC80508: DAC80508MC

user6260564
Prodigy 20 points
Part Number: DAC80508

Hi:

 The IC what i used is DAC80508MC.After power on, no action is taken, the output voltage is 0v instead of 1.25v.What is the problem？

thanks!

  • 0
    TI__Genius 14220 points

    Hello,

    Welcome to E2E and thank you for your query. I am guessing that there is a violation of the power supply headroom required for the reference. If you are using a 3.3V VDD, you need to have the REF_DIV bit set to 1. Please look at the REFERENCE INPUT part of the section 7.3 in the datasheet.

    Hope that answers your question. Let me know if you have further questions.

    Regards,

    Uttam Sahu

    Applications Engineer, Precision DAC