TMP102 Digital Temperature Sensor Hookup Guide

Contributors: Alex the Giant
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Board Overview

Let's go over the TMP102 Breakout in detail.

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TMP102 Details:

  • Uses the I2C interface
  • 12-bit, 0.0625°C resolution
  • Typical temperature accuracy of ±0.5°C
  • Supports up to four TMP102 sensors on the I2C bus at a time

Pull-up Resistors

This breakout board has built-in 4.7 kΩ pull up resistors for I2C communications. If you're hooking up multiple I2C devices on the same bus, you may want to disable/enable the pull-up resistors for one or more boards. On the TMP102, the pull-ups are enabled by default. To disable them, simply use a hobby knife to cut the traces connecting the left and right pads of the jumper labeled I2C PU on the back of the board. This will disconnect the resistors from VCC and from the I2C bus.