TMP432_15 Datasheet, PDF (1/42 Pages) Texas Instruments – ±1°C Temperature Sensor with Series-R, η-Factor, and Automatic Beta Compensation

TMP432
TMP431
TMP432
www.ti.com
SBOS441F – SEPTEMBER 2009 – REVISED AUGUST 2013
±1°C Temperature Sensor with Series-R,
η-Factor, and Automatic Beta Compensation
Check for Samples: TMP431, TMP432
FEATURES
1
•234 ±1°C REMOTE DIODE SENSOR
• ±1°C LOCAL TEMPERATURE SENSOR
• AUTOMATIC BETA COMPENSATION
• η-FACTOR CORRECTION
• PROGRAMMABLE THRESHOLD LIMITS
• TWO-WIRE/ SMBus™ SERIAL INTERFACE
• MINIMUM AND MAXIMUM TEMPERATURE
MONITORS
• MULTIPLE INTERFACE ADDRESSES
• ALERT/THERM2 PIN CONFIGURATION
• DIODE FAULT DETECTION
APPLICATIONS
• LCD/DLP^®/LCOS PROJECTORS
• SERVERS
• INDUSTRIAL CONTROLLERS
• CENTRAL OFFICE TELECOM EQUIPMENT
• DESKTOP AND NOTEBOOK COMPUTERS
• STORAGE AREA NETWORKS (SAN)
• INDUSTRIAL AND MEDICAL EQUIPMENT
• PROCESSOR/FPGA TEMPERATURE
MONITORING
DESCRIPTION
The TMP431 and TMP432 are remote temperature
sensor monitors 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
program the alarm thresholds and to read
temperature data. DLP^®
The TMP431/32 include beta compensation
(correction), series resistance cancellation,
programmable non-ideality factor, programmable
resolution, programmable threshold limits, minimum
and maximum temperature monitors, wide remote
temperature measurement range (up to +150°C), and
diode fault detection and temperature alert function.
The TMP431 is available in a VSSOP-8 package and
the TMP432 is available in a VSSOP-10 package.
+5V
+5V
TMP431
1
V+
2
DXP
3 _DXN
4
THERM
5
GND
8
SCL
7
SDA
ALERT/THERM2
6
One Channel Local
One Channel Remote
SMBus
Controller
TMP432
1
V+
2
DXP1
3 _DXN1
10
SCL
9
SDA
4
DXP2
5
DXN2
ALERT/ 8
THERM2
GND
6
7
THERM
One Channel Local
Two Channels Remote
SMBus
Controller
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 © 2009–2013, Texas Instruments Incorporated