AVR-Chat

On Thu, 24 Feb 2005 17:35:08 +0100 you wrote:

>
>Yes, that part I got, but in the table there's differential inputs with
>(one example) ADC0 in both positive and negative column. I was sort of
>hoping I could use it as I would a single ended input but with the gain
>available. I've now tried and can't get it to work so I'm mostly curious
>why those combinations are in the table in the first place, and not
>marked out as unusable or something...

I have wondered about that a bit myself. I suspect that it could provide a high
speed amplified indication of changes in the input but haven't tested it.
For an amplified single ended measurement I just use 2 channels and ground the
negative input but it could go to a reference.
--
Ralph Hilton
http://www.ralphhilton.org
C-Meter: http://www.cmeter.org
FZAOINT http://www.fzaoint.net