TMP422-EP Datasheet, PDF (1/31 Pages) Texas Instruments – ±1°C REMOTE TEMPERATURE AND ±2.5°C LOCAL TEMPERATURE SENSOR IN SOT23-8

TMP422-EP
www.ti.com
SBOS577 – SEPTEMBER 2011
±1°C REMOTE TEMPERATURE AND ±2.5°C LOCAL
TEMPERATURE SENSOR IN SOT23-8
Check for Samples: TMP422-EP
FEATURES
1
•234 SOT23-8 Package
• ±1°C Remote Diode Sensor (Max)
• ±2.5°C Local Temperature Sensor (Max)
• Series Resistance Cancellation
• n-Factor Correction
• Two-Wire/ SMBus™ Serial Interface
• Multiple Interface Addresses
• Diode Fault Detection
• RoHS Compliant and NO Sb/Br
APPLICATIONS
• Processor/FPGA Temperature Monitoring
• LCD/ DLP^®/LCOS Projectors
• Servers
• Central Office Telecom Equipment
• Storage Area Networks (SAN)
SUPPORTS DEFENSE, AEROSPACE AND
MEDICAL APPLICATIONS
• Controlled Baseline
• One Assembly/Test Site
• One Fabrication Site
• Available in Military (–55°C to 125°C)
Temperature Range⁽¹⁾
• Extended Product Life Cycle
• Extended Product-Change Notification
• Product Traceability
+5V
1
DX1
2
DX2
8
V+
7
SCL
6
SDA
SMBus
Controller
3
DX3
4
DX4
1 Channel Local
2 Channels Remote
GND
5
(1) Additional temperature ranges available - contact factory
DESCRIPTION
The TMP422 is a remote temperature sensor monitor with a built-in local temperature sensor. The remote
temperature sensor diode-connected transistors are typically low-cost, NPN- or PNP-type transistors or diodes
that are an integral part of microcontrollers, microprocessors, or FPGAs.
Remote accuracy is ±1°C for multiple IC manufacturers, with no calibration needed. The two-wire serial interface
accepts SMBus write byte, read byte, send byte, and receive byte commands to configure the device.
The TMP422 includes series resistance cancellation, programmable non-ideality factor, wide remote temperature
measurement range (up to 150°C), and diode fault detection.
The TMP422 is available in a SOT23-8 package.
1
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.
DLP is a registered trademark of Texas Instruments.
2
SMBus is a trademark of Intel Corporation.
3
All other trademarks are the property of their respective owners.
4
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2011, Texas Instruments Incorporated