quentennis
New Member
Hi all
I'm currently trying to do a ADC with my pic16f877A microcontroller. But when i'm programming and testing it, i always get the same value. So I read several times the datasheet, and I figured out maybe i've forgotten sth on my board.
On the datasheet, it is said : "The maximum recommended impedance for analog sources is 2.5 kΩ." But i don't really understand what this sentence means. Do I have to add a resistance between my analog signal and my AD pin ? Or am I wrong ?
Thank you for your help
I'm currently trying to do a ADC with my pic16f877A microcontroller. But when i'm programming and testing it, i always get the same value. So I read several times the datasheet, and I figured out maybe i've forgotten sth on my board.
On the datasheet, it is said : "The maximum recommended impedance for analog sources is 2.5 kΩ." But i don't really understand what this sentence means. Do I have to add a resistance between my analog signal and my AD pin ? Or am I wrong ?
Thank you for your help