On 28/02/2013 20:16, YES NOPE9 wrote:
> Looking for recommendations for the best temp sensor that meets the follo=
wing criteria ( listed in order of importance )
>=20
> Accuracy is .5C  + or - .25 C
> Range is - 20C to 75C
> Long term stability
> simple interface such as  i2c, SPI , voltage , current , resistance .....=
 simpler is better
> Low price
> no external parts
> no calibration

You're asking for a lot there, especially with the low price.  The
Sensiron ones are nice and very easy to interface, but you do need
decoupling and a pullup resistor (unless your micro has this built in).

Google for the SHT10 or SHT15, same part but with varying typical accuracy.

David

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