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From: Robert Baer on 10 Mar 2010 01:43
John Walliker wrote:
> On 9 Mar, 09:12, Robert Baer <robertb...(a)localnet.com> wrote:
>> Be advised that every manufacturer has their own design; there are at
>> least 3 different circuits being used.
>> The TI design is completely different than the ST design.
>
> Thanks. That is very useful to know. I will bench test with all
> makes that are likely to get used in production. Do you know whether
> TI are shipping two different designs or just specifying them in
> different ways?
>
> John
I do not KNOW if the designs are different, but i believe it is safe
to say it is solely specsmanship.
National has different TC specs depending on temperature range;
looking at their curves (when you can find them) indicates the overall
curve from lowest temp to highest temp looks like a parabola with a max
at some temperature.
Take that curve and slice off a large part of the upper end and some
of the lower end,then run a line thru the net average on this new curve
and wa-la; the TC has improved maybe an order of magnitude.
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