TMP122

TMP124

SBOS272B – JUNE 2003 – REVISED DECEMBER 2003

www.ti.com

DESCRIPTION

The TMP122 and TMP124 are SPI-compatible temperature

sensors available in SOT23-6 and SO-8 packages. Requir-

ing only a pull-up resistor for complete function, the TMP122

and TMP124 temperature sensors are capable of measuring

temperatures within 2

°C of accuracy over a temperature

range of –40

°C to +125°C, with operation up to 150°C.

Programmable resolution, programmable set points and shut

down function provide versatility for any application. Low

supply current and a supply range from 2.7V to 5.5V make

the TMP122 and TMP124 excellent candidates for low-

power applications.

The TMP122 and TMP124 are ideal for extended thermal

measurement in a variety of communication, computer, con-

sumer, environmental, industrial, and instrumentation appli-

cations.

FEATURES

q DIGITAL OUTPUT: SPI-Compatible Interface

q PROGRAMMABLE RESOLUTION:

9- to 12-Bits + Sign

q ACCURACY:

±1.5°C from –25°C to +85°C (max)

±2.0°C from –40°C to +125°C (max)

q LOW QUIESCENT CURRENT: 50

µA

q WIDE SUPPLY RANGE: 2.7V to 5.5V

q TINY SOT23-6 AND SO-8 PACKAGES

q OPERATION TO 150

°C

q PROGRAMMABLE HIGH/LOW SETPOINTS

Copyright © 2003, Texas Instruments Incorporated

1.5

°C Accurate Programmable

Digital Temperature Sensors

with SPI™ Interface

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

APPLICATIONS

q POWER-SUPPLY TEMPERATURE MONITORING

q COMPUTER PERIPHERAL THERMAL PROTECTION

q NOTEBOOK COMPUTERS

q CELL PHONES

q BATTERY MANAGEMENT

q OFFICE MACHINES

q THERMOSTAT CONTROLS

q ENVIRONMENTAL MONITORING and HVAC

q ELECTROMECHANICAL DEVICE TEMPERATURE

Diode

Temp.

Sensor

∆Σ

A/D

Converter

OSC

Control

Logic

Serial

Interface

Config

and Temp

Register

TMP122

Temperature

GND

ALERT

1

2

3

6

5

4

V+

SO/I

CS

SCK

SPI is a registered trademark of Motorola. All other trademarks are the property of their respective owners.

Diode

Temp.

Sensor

∆Σ

A/D

Converter

OSC

Control

Logic

Serial

Interface

Config

and Temp

Register

TMP124

Temperature

SCK

SO/I

1

2

3

8

7

6

NC

V+

CS

NC

45

GND

ALERT

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.