External Voltage Reference for Analog Read

mejrissi · ‎2014-04-02

Posted on April 02, 2014 at 12:32

Hey everyone. I am using a STM32F4 - Discovery board to read an analog value from a pressure sensor to convert it into depth. My problem is that the sensor that I need works with 0-5V and my STM32F4 works only with 3.3V. Is there any way to make the analog read module's reference an external 5V that I provide?

#adc---external-voltage

Nickname14663_O · ‎2014-04-02

Posted on April 02, 2014 at 17:22

Hello,

You are facing an issue that is more related to the discovery kit capabilities.

If possible, I recommend you to post your question to the microcontroller forum. And especially in the STM32 evaluation tools category.

Here is a shortlink :

https://my.st.com/public/STe2ecommunities/mcu/Lists/STM32Discovery

If you need op-amps or comparators in your designs, in addition to STM32 you can also think to the wide ST analog portfolio.

Thanks and regards,

Sylvain

mejrissi · ‎2014-04-07

Posted on April 07, 2014 at 10:51

Thank you for your reply :)