AVR-Chat

Hi Jim,

I have an inductor in series with the main 5V supply with a 0.1uF cap either
side of the inductor so there is a bypass on Vref. I use this same exact
setup with the isolated ADC I also have on the design and any other design I
use and it works well. AVcc is fed from the same point.

I don't have a stable reference as I need ratiometric measurement. 

Dave...

-----Original Message-----
From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On Behalf
Of Jim Wagner
Sent: 26 October 2012 22:49
To: AVR-Chat@yahoogroups.com
Subject: Re: [AVR-Chat] Apparent non-linear output from ADC

How have you supplied AVcc? What are you using for reference? Does the
reference have a bypass capacitor?

Jim Wagner
Oregon Research Electronics