Hi Andrew
One way to get a good accuracy is to do a
calibration.
Svenn :-)
----- Original Message -----From: Andrew LimSent: Tuesday, November 02, 2004 6:49 AMSubject: [AVR-Chat] ADC accuracy in ATmega8535Hi there,
I'm using ADC interrupt mode in my prototype board. Everything is running now but I'm facing accuracy problem. Can someone help me? I need my accuracy to be +/- 0.5%.
1. I have my AVCC connected to Vcc.
2. Aref not connected.
3.Set free running mode
4.REFS1 = 0 , REFS0 = 0 (Choosed AVCC with external cap at Aref) -> what if I dun have caps coupled between AVCC and Aref? Will it affect the accuracy?
Thanks.
Andrew
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