AnsweredAssumed Answered

STM32 ADC protection diode

Question asked by prieur.jean on Sep 18, 2013
Latest reply on Sep 19, 2013 by prieur.jean

I want to protect my ADCs from overvoltage and ESD, and limiting the input to 3.3V.

This is my schematic:

There is a voltage divisor to convert 5V >  3.3V.  The top resistor is also used as the diode resistor.

There is a lot of special diodes in the market: TVS, zener... Do you know a part number which can fit for my application ?

Thanks !