Please don't shout!

You can adjust the Vref+ of the PIC to improve your resolution somewhat, but
not to a value as low as 1 volt. You will need an external opamp.

Bob Ammerman
RAm Systems
(contract development of high performance, high function, low-level
software)


----- Original Message -----
From: "MATTHEWS, DEAN (D.)" <dmatth14@FORD.COM>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Thursday, September 27, 2001 4:31 AM
Subject: Re: [PIC]: SCALING A/D CONVERTER


> I AM PROPOSING TO USE THE 40PIN 16F877.  I HOPE TO USE THE ONBOARD AD
CONVERTER TO PROCESS A VARYING DC ANALOGUE SIGNAL RANGING BETWEEN 0 AND
1VOLT.  DOES THE PIC HAVE A FUNCTION THAT WOULD ENABLE ME TO SCALE THIS
VOLTAGE OR DO I NEED AN EXTERNAL AMPLIFIER TO AMPLIFY THE SIGNAL TO ARROUND
4VOLTS TO GET BETTER RESOLUTION.
>
> Dean Matthews
> Reliability Engineering
> Ford Engine Plant Bridgend
> South Wales, U.K
> Tel No:(01656)672597
> Fax No:(01656)672558
> Email: dmatth14@ford.com
> ` Please consider your environmental responsibility before printing this
e-mail
>
> --
> http://www.piclist.com#nomail Going offline? Don't AutoReply us!
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>
>

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