piclist 2003\05\09\111454a >
Thread: Decoupling Aref when using AVcc on ADC
www.piclist.com/techref/io/atod.htm?key=adc
flavicon
face BY : Dave VanHorn email (remove spam text)



At 08:17 AM 5/9/2003 -0700, John Pearson wrote:
>Refering to the MEGA8 ADC reference voltage, two sources mention
>decoupling Aref pin with a capacitor when using AVcc as the voltage reference.
>
>I am unable to find what capacitor value or how to install.

That's because it's up to you, and the right answer depends on your system
noise.

>So can I assume I use a .1uF mono tant. between AVcc and ground?

Sure.
I also put a 10 ohm resistor in series with AVCC, and a local bypass there.

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.
<5.2.0.9.2.20030509101328.01215be8@mail.cedar.net>

In reply to: <000c01c3163e$1e96f960$11313fd1@xero>
See also: www.piclist.com/techref/io/atod.htm?key=adc
Reply You must be a member of the piclist mailing list (not only a www.piclist.com member) to post to the piclist. This form requires JavaScript and a browser/email client that can handle form mailto: posts.
Subject (change) Decoupling Aref when using AVcc on ADC

month overview.

new search...