Overview

The TMP102 is a very small (surface-mount) low-power digital semiconductor temperature sensor. As the datasheet says, "the temperature sensor in the TMP102 is the chip itself." Data can be read from the sensor using I2C. A breakout board is available from Sparkfun which includes accompanying filtering capacitors and pull-up resistors.

Features

  • Small size
  • Two-wire serial interface
  • Accuracy: 0.5C (-25C to +85C)
  • 12-bit, 0.0625C resolution
  • Low Power
  • 1.4V to 3.6VDC supply range
  • 10A Active (max)
  • 1A Shutdown (max)

Datasheet

Texas Instrument's product page and datasheet.

Sources

TMP102 + Breakout Board - Sparkfun - $5.95

The Part

Pinout and breakout board from Sparkfun:

Schematic

From the datasheet:

Schematic for Sparkfun's breakout board:

Circuit

The following image shows the circuit needed to connect the TMP102 on the Sparkfun breakout board to an Arduino (via Bildr Blog):

Code

TMP102 example code via Bildr Blog

References

Bildr Blog

Keywords

Temperature, Thermometer, Hot, Heat, Cold, Cool, Farenheit, Celsius, Degrees, Weather, Environment, Digital, I2C