> -----Original Message-----
> From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On
Behalf
> Of Apptech
> Sent: 21 May 2008 13:42
> To: Microcontroller discussion list - Public.
> Subject: Re: [PIC] Low cost temperature sensing
> 
> > I've been using some US Sensors parts for high accuracy
> > and
> > interchangability (0.1c) applications recently with great
> > success.
> 
> > These puppies cost about USD5.0. But your specs can be
> > done for about
> > a buck; including the passives. :)
> 
> "Within a few degrees" over a 160 C range with no
> calibration may be pushing things for some values of few.

The OP mentions a 160 degree Fahrenheit range, about 89 degrees C.  A
few degrees C accuracy should be achievable, but probably not by the
very low cost devices that have a very loose tolerance on nominal
resistance and beta.

Regards

Mike

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