Not really.  10-bit ADC =3D 1024 steps, so you've got a ~1V range if each=20
ADC step =3D 1mV.  Note that there is no guarantee of "nearest" millivolt=20
with this setup.  And I assume you want to measure over the whole=20
battery range, from full (whatever that is - you don't say and it is=20
important, it could be anything from 1.2V to 12V) to zero (if higher=20
than zero for "battery is dead stop measuring" is OK, that gives more=20
design choices.)

You sure you need to a millivolt?  That seems like overkill, unless=20
you're trying to do something special.  What's the application?

If say 2 or 5mV is good enough I think a simple circuit with a PIC can=20
be made.  More details are needed.

J

V G wrote:
> Hi all,
>
> I want to construct a simple device for plotting discharge curves for
> batteries. I want to be able to measure voltage to the nearest
> millivolt.
>
> How would I go about doing this? Would an ADC on a PIC suffice?
--=20
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