At 06:08 PM 6/5/02 +0530, you wrote:
>Somehow after I received mail from Pete (though the List) I got
>automatically unsubscribed.
>  So in case any body else answered my mail, I have not received it. So
>please can send you it again, may be to my address??
>
>I did try out just the ADC using friend's programmer. I got about 6 digit
>fluctuation. I assumed that, that was because I was using a general purpose
>PCB, and once I get proper PCB, I should get better than 2 digit.
>
>It is surprsing that I donot see any project using PIC14000.

PIC14000 was Microchip's first attempt at doing high resolution A/D and
they did some stupid things like putting the analog ground and digital
ground on the same pin. This makes it pretty much useless for many
applications. It was aimed at smart battery charger applications with
the crude D/A on chip, but is a bit expensive for that kind of app.

I suspect, as Olin says, it is an orphan and also that someday Real
Soon Now Microchip will play catch up with the competition by offering
some up-to-date 16-24 bit delta-sigma converters on-chip.

In the meantime you may be better off by using an off-chip A/D, making
your own slope converter using the capture compare modules and perhaps
comparator modules on a PIC, or (bite my tongue) going over to the 8051
for this project.

Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the reward"
speff@interlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com
9/11 United we Stand

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