Hello,
my question isn't new, but I need some additional information.
TMP275 has an accuracy of 0.5 °C in the temperatur range from +10°C to +85°C.
I need a specification for a temperature range from -30°C to +10 °C.
Is the accuracy generally better when the temperature is lower ?
Is there no change of accuracy over the years ?
I have to specify this for our new product, so I hope you can help me.
Thanks and best regards
Hermann
Hello Hermann,
Thanks for posting your questions on E2E. Yes, the accuracy of Temp sensors is generally better at lower temperatures.
You can notice from the above graph of TMP275 that between -30°C and +10 °C the temperature error ranges around +/-0.125 at an operating voltage of 5V. TMP275 has undergone 1000 hours of life cycle test at 125°C which translates to > 15 years at regular operating conditions. This mean that the worst-case measurement error will not exceed the Max temperature error/accuracy numbers specified in the table at Page 3, Row 1 of the data sheet.
Best Regards,
Abhi Muppiri
Applications Engineer
AIP- Sensing Products
Texas Instruments
