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MSPM0G1506: the VREF+ pin Connection issue

Xinjian Xiong
Prodigy 120 points
Part Number: MSPM0G1506

Hi Team, my customer is using MSPM0G1506 in new project. customer meet inquiry below, please help to reply soon, thanks- Jerry

'Please help to suggest about the VREF+ whether need to connect VDD when use ADC function  , I check MSPM0G series EVM development guide, it seems no need connect to external reference voltage'

age,

  • 0
    TI__Mastermind 28070 points

    Hi Jerry,

    If using the internal VREF module to generate 2.5V or 1.4V, you do not want to connect the VREF+ pin to VDD or any other voltage.

    If you want to use VDD as VREF, then putting VDD into VREF+ can get you lower noise results than using the internal VDDA path. 

    Best Regards,
    Brandon Fisher