ADC Reference Voltage - How To Supply It Without A Reference Chip - Simply Put
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- Опубликовано: 11 сен 2024
- Setting the reference voltage for an ADC (such as the analog pins on an Arduino Uno) is important to maximize the precision and accuracy of your readings, and if you're trying to use something like a voltage divider instead of a proper reference voltage chip or zener diode regulator, there are a few extra considerations to account for.
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great explanation as usual, thank you.
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Hii plz make a video on over voltage protection circuit for Arduino ADC
very helpful, thanks.
If in doubt, use an op amp :)
nice!!
Excellent concept and demonstration! However, I measured my Arduino Nano, the resistance at Aref pin is around 2.978M ohms, not 32k as you said in the video.
dumbass
i missed the capacity mention, is it in NF region? will it mess up with the op amp at higher freq?
It takes about 100 microseconds to do an analog read on an Arduino, so that's only about 10kHz at absolute maximum, and that's assuming you spend no time at all actually doing anything with the number you read. So probably any op-amp and capacitor would be able to handle it, but you could tweak it if necessary.
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