I have an inquiry about the 1.1 internal ref of the arduino nano please!

Official Hardware Nano Family Classic Nano
1

Hi guys I' m trying to use arduino nano for some project, I'm using the 1.1 v ref to sense current but sometimes because of the setup of the circuit 5 v appear at the analog pins, will that damage the board or the analog pins even though they are rated for 5v anyway?

2

No.

3

Thank you !

4

Using 1.1 V for the VREF pin of the ADC Module states that the input analog voltage should be <= 1.1 V. Any input voltage >= 1.1V will force the ADC to produce 1023 (0x03FF) without causing any elactronic harm to the ADC circuitry. The circuit of Fig-1 might give additional information.

adc328p
adc328p670Ă—563 6.53 KB

Figure-1:

5

Thanks for this deatailed reply, this is what I wanted to know I mean it makes sense that no damage should be done to the analoge pins but I read somewhere that it could damage them and this is why I wanted to make sure... Thanks again regards!