- Location
- SA
- First Name
- Bill
- Drive
- 2000 Galant Type-V
1997 MK Triton GLS [6G74 conversion]
2019 i30 N-Line
Correct, ATmega also has the same protection, but I've killed an input so put additional protection infront and provide local capacitance for the 5v rail too.
The diodes internally will dump excess votlage/current internally to vcc within the chip. Let it be a last resort.
As Tony said, a resistor in series to current limit. cos the ADC is such high impedence, it shouldnt have much of a voltage drop across it.
The diodes internally will dump excess votlage/current internally to vcc within the chip. Let it be a last resort.
As Tony said, a resistor in series to current limit. cos the ADC is such high impedence, it shouldnt have much of a voltage drop across it.