stm32f429-Disc1

[harry123]

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

[AScha.3]

GND -- VDDA .

0V --- 3,3V

[harry123]

Minimum and maximum  voltage that adc can take as input

[AScha.3 · Accepted solution]

0V  -- 3,3V .

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

[Imen.D]

Hello @harry123 and welcome to the Community 🙂

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

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

Imen

[Imen.D]

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

[harry123]

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]

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.