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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
● DIGITAL OUTPUT: SPI-Compatible Interface
● PROGRAMMABLE RESOLUTION:
9- to 12-Bits + Sign
● ACCURACY:
±1.5°C from –25°C to +85°C (max)
±2.0°C from –40°C to +125°C (max)
● LOW QUIESCENT CURRENT: 50µA
● WIDE SUPPLY RANGE: 2.7V to 5.5V
● TINY SOT23-6 AND SO-8 PACKAGES
● OPERATION TO 150°C
● 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
● POWER-SUPPLY TEMPERATURE MONITORING
● COMPUTER PERIPHERAL THERMAL PROTECTION
● NOTEBOOK COMPUTERS
● CELL PHONES
● BATTERY MANAGEMENT
● OFFICE MACHINES
● THERMOSTAT CONTROLS
● ENVIRONMENTAL MONITORING and HVAC
● 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.
