On Wed, Jan 26, 2011 at 1:24 PM, Olin Lathrop <olin_piclist@embedinc.com>wr=
ote:

> Since this is a one-off, a easy answer is to split the battery pack.  I
> didn't check what supply range the AD620 needs, but you can use 4 AA to
> make
> +6V and another 4 AA to make -6V.  That's a bit klunky, but for a one off
> that shouldn't be much of a issue.
>
> Check the AD620 and see what supply rails it needs.  Maybe you can use
> +-4.5V (3 cells each side) or less.
>
>
This is what the datasheet says: Wide power supply range (=B12.3 V to =B118=
 V)

So i'll just use a Li-ion on each side.
--=20
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