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Query on temp sensors

I was wondering if anyone is aware of chips which have onboard temp sensors, of the 8 pin variety. I haven't found any. I don't really think that we'll find one with the 0.5-1.0C accuracy that we are looking for either, but that's just me.

Barring that, has anyone tried the Nat. Semi 1626 ? This looks reasonably small and should work well with a 8 pin PIC (w/ onboard ADC). The application if fairly simple, but we do need a fairly high accuracy of under 1 deg C. All suggestions, nonsolictations, and experiences welcome.

Thanks!

IITM

Reply to
Insane Inthe Membrane
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Try DS1620, DS1820 from (formerly Dallas) MAXIM semiconductors. The 1620 and the 1820 will give you 0.1 deg resolution with a conversion rate of 2/sec

regards /jan

Insane Inthe Membrane schrieb in im Newsbeitrag: snipped-for-privacy@posting.google.com...

Reply to
Jan Homuth

I don't quite see why a simple Dallas temperature sensor like the DS1820 family or similar wouldn't fulfill this requirement --- but that may well be caused by the requirement being rather vague...

So: what kind of "chip" are you asking for? Your way of speaking about it "having" an onboard sensors seems strange --- maybe what you're really looking for is a chip that *is* a PCB-mountable temperature sensor in a 8-pin housing?

--
Hans-Bernhard Broeker (broeker@physik.rwth-aachen.de)
Even if all the snow were burnt, ashes would remain.
Reply to
Hans-Bernhard Broeker

For example, Analog Devices AD7415.

If you'd like also humidity, try SHT-11 from Sensirion ().

HTH

Tauno Voipio tauno voipio @ iki fi

Reply to
Tauno Voipio

Others have recommended to Dallas/Maxim parts. The Dallas/Maxim DS18B20 claims to be accurate to +-0.5C over -10 to +85C, but it is spec'ed to report -55C to +125C with reduced accuracy in the extremes. What temperature range do you need?

Thad

Reply to
Thad Smith

Have you looked at the LM92?

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
Reply to
Spehro Pefhany

Resolution is not the same as accuracy, their accuracy is about 2 degrees.

[snip]

Mostafa

------------------------------------------------------ Mostafa Kassem

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Reply to
Mostafa Kassem

I have used the LM34 for about 15 years for remote energy products, analog output fed into a PIC, works for me...

The Dallas 1620 series are digital types.

need more info to peg it down....

hth jay

Reply to
j.b. miller

conversion

degrees.

Most of the 18x20's claim .5C accuracy, the 1821claims 1C.

michael brown

Reply to
Anthony Fremont

I like the LM75, see

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It has I2C interface, I am reading 8 of them on the same bus, via the PC parallel port (see also
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Reply to
Hans Summers

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