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ADC Voltage reference doubt

Question asked by Sergi Hernandez on Nov 30, 2017
Latest reply on Nov 30, 2017 by waclawek.jan



I'm working with a STM32L053R8 and I want to use some ADC pins. I have a doubt about the input voltage range. 


Does the ADC have an independent power supply? 

Which is the input voltage range of the ADC?


For example:


Let's suppose that I am supplying the STM with 3.3 V, and I am using 12 bits from the ADC.


That means that...?


- The input voltage range goes from 0V to 3.3V?

- The step-quantization is 3.3/(2^12-1)?