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.
--- 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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