On Sun, 13 Feb 2011, kstoneevbarm wrote:
>
> Ah, thanks for the clarity... It would seem my board manufacturer doesn't
> calibrate the the ADC... Perhaps OneWire ADC is in order or the max you
> suggested.
Calibrate it yourself?
Which solution really depends on what you want you to do with the ADC.
>
>
>
>
>
>
>
> --- In Jim Jackson <> wrote:
> >
> >
> >
> >
> > On Thu, 10 Feb 2011, kstoneevbarm wrote:
> >
> > > I don't have a TS-7200, but I do have a EP9302 based board that is
> > > similar in many aspects, except for the additional ADC circuitry it
> > > seems.
> > >
> > > There is an 5 channel ADC on-die on the EP9302.
> > >
> > > Is there a reason it's not used in the TS designs?
> >
> > My guess is that the TS7200 board (TS's first arm SBC) initially
> > had an EP9301 (I have one of these boards), and I believe there were
> > issues with the internal ADC in the EP9301 which were probably fixed in
> > later chips in the family.
> >
> > Later the internal ADC on other boards, certainly on the TS7260.
> >
> > The MAX197 is certainly better.
> >
>
>
>
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