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harry123
Associate III
October 11, 2023
Solved

stm32f429-Disc1

What is the minimum and maximum voltage the internal ADC of stm32f429 can measure ?

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    AScha.3
    AScha.3Best answer
    Super User
    October 11, 2023

    0V  -- 3,3V .

    most other people read in ds of cpu , so i recommend this for you also.

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    AScha.3
    AScha.3
    Super User
    October 11, 2023

    GND -- VDDA .

    0V --- 3,3V

     

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    harry123Author
    Associate III
    October 11, 2023

    Minimum and maximum  voltage that adc can take as input

    AScha.3
    AScha.3Best answer
    Super User
    October 11, 2023

    0V  -- 3,3V .

    most other people read in ds of cpu , so i recommend this for you also.

    If you feel a post has answered your question, please click on " Best Answer ".
      Imen.D
      ST Technical Moderator
      October 11, 2023

      Hello @harry123 and welcome to the Community :)

      You mean, input voltage (Vain): Min = GND, max = VREF

      ImenD_0-1697017133545.png

      I advise you to check the ADC electrical characteristics (table 74) in the STM32F429x Datasheet.

      Imen

      In order to give better visibility on the answered topics, please click on 'Best answer' on the reply which solved your issue or answered your question. Thanks
        harry123Author
        Associate III
        October 11, 2023

        If I apply 300mv and check my output the waveform is somewhat distorted and if I apply anything above 1v the waveform is normal

        AScha.3
        AScha.3
        Super User
        October 11, 2023

        i cannot find my big glass ball now, so i cannot see the waveform you talking about . :)

        maybe your source impedance is to high -> use low souce impedance.

        and/or try longer sampling time setting.

        If you feel a post has answered your question, please click on " Best Answer ".
        Imen.D
        ST Technical Moderator
        October 11, 2023

        Hi @harry123,

        I moved for you this post to the right topic STM32 MCUs products (instead of Feedback Forum).

        Thanks again for your contribution.

        Imen

         

         

         

        In order to give better visibility on the answered topics, please click on 'Best answer' on the reply which solved your issue or answered your question. Thanks
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