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How to tone down a signal in ST board?

Question asked by Vincenzo Di Matteo on Aug 24, 2017
Latest reply on Aug 24, 2017 by KIC8462852 EPIC204278916

Hi community,

A lot of sensors output go from 0 to 5V. But the ADCs on Nucleo Boards have a 0-3.3V range. The solution is to use some external resistors to reduce the input of the ADC.

Is there another solution without external resistors? I think using 5V tollerant pin, then route the signal somewhere that could tone down the signa and then enter in ADC. Is it possible?

I think about OPAMP but I notice that I can only amplify the signal.

What do you think?

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