Martin:
Sounds like the TMP03 in a TO92 package.
Try Analog Devices at:
http://www.analog.com/publications/magazines/Dialogue/30-1/digital.html

- Wayne Foletta
BMI - Saratoga, CA

> ----------
> From:         Martin R. Green[SMTP:elimar@NOSPAMBIGFOOT.COM]
> Reply To:     pic microcontroller discussion list
> Sent:         Wednesday, January 21, 1998 11:09 AM
> To:   PICLIST@MITVMA.MIT.EDU
> Subject:      Digital temp sensors
>
> I know someone can help me on this one.
>
> A while back I ran across some interesting 3 terminal temperature
> sensors, and now that I'm about to design one in, I can't find the WWW
> link to them for design info.
>
> These devices are unique in that the temperature is transmitted via
> the on/off ratio of the pulse train from the 3rd terminal of the
> device.  They are factory calibrated, and I think they come in TO3
> cases.
>
> Anybody recognize these?
>
> TIA - Martin.
>
> Martin R. Green
> elimar@NOSPAMbigfoot.com
>
> To reply, remove the NOSPAM from the return address.
> Stamp out SPAM everywhere!!!
>