TMP107-Q1 Datasheet, PDF (11/39 Pages) Texas Instruments – TMP107-Q1 Automotive Grade, ±0.4°C Temperature Sensor with Daisy-Chain UART, EEPROM, and Alert Function

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8 Detailed Description
TMP107-Q1
SBOS726A – OCTOBER 2015 – REVISED OCTOBER 2015
8.1 Overview
The TMP107-Q1 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-Q1 supports individual commands to a specific device in the daisy chain, and also supports global
commands that allow multiple TMP107-Q1s in the chain to respond to a single command.
8.2 Functional Block Diagram
V+
R1 R2
Oscillator
100 k 
100 k 
EEPROM
Power-On Reset
Digital Controls
ALERT
ALERT1
ALERT2
I/O1
Input/Output
I/O2
Temperature
Sensor
Thermal
Path
GND
NOTE: The temperature sensor of the TMP107-Q1 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.
Copyright © 2015, Texas Instruments Incorporated
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