Oscillator

EEPROM

Power-On Reset

Input/Output

I/O1

I/O2

ALERT1

ALERT2

V+

GND

R1

R2

Digital Controls

Temperature

Sensor

ALERT

100 k



100 k



Thermal

Path

TMP107

SBOS716B – MAY 2015 – REVISED SEPTEMBER 2015

www.ti.com

7 Detailed Description

7.1 Overview

The TMP107 is a digital temperature sensor that is optimal for thermal monitoring of large areas over long

distances. The robust UART-compatible SMAART wire interface transfers data over a single wire at distances of

up to 1000 feet (300 meters) between consecutive devices in the chain, and is capable of communicating in a

daisy-chained configuration with up to 32 devices on a single bus.

The TMP107 supports individual commands to a specific device in the daisy chain, and also supports global

commands that allow multiple TMP107s in the chain to respond to a single command.

7.2 Functional Block Diagram

NOTE: The temperature sensor of the TMP107 is the silicon chip. Thermal paths run through the package leads. The

lower thermal resistance of metal enables the leads to provide the primary thermal path.

10

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