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external circuit components needed to reliably connect USB voltage to an ADC input
Are additional external circuit components needed to reliably connect USB voltage to an ADC input, besides a voltage divider that brings 5V down to 3.3V?
Amel NASRIBest answer
ST Technical Moderator
Mar 10, 2021 12:54 PM UTC
Hi @FAdar.1 ,
The USB implementation is not the same for all STM32 products. So, the required hardware setup will depend on the product you selected.
There are several Hardware guidelines for USB implementation detailed in AN4879 that covers power setup, clock setting and several others.
Have a look to it, I believe it will help you. If you think that there are some missing details for this application note, just keep me informed so that it can be considered in a future update of this document.
-Amel
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