analog in pins

Using Arduino Project Guidance
1

Hello, im using Arduino Mega 2560. If i give 5V to the analog in pins what will be the current on those pins?

thank you,

2

Very very little. Input impedance is > 1Mohm.

XY problem, why do you think you need to know?

3

Because i want to connect it to MKS 247D and i dont want the MKS 247D will be destroyed.

its less than 1mA?

thanks,

4

Way less :slight_smile:

5

Datasheet says 1uA (microAmp) max.

6

It depends.

If the Mega is ON, and you connect 0-5volt to an input pin, there is (almost) no current flowing.
It the Mega is OFF, and you connect 5volt to an input pin, that voltage will try to power the Mega through the input protection diodes.
Then >60mA could be flowing into the input pin if the device attached is able to supply that.
If there is a chance of that happening, you should use a current limiting resistor between device and input pin.
Leo..