TMP451 Datasheet芯片手册
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D+
D
SCL
SDA
THERM
GND
V+
ALERT / THERM2
Processor or
ASIC
SMBus
Controller
1
2
3
4
5
8
7
6
TMP451
1.7 V to 3.6 V
Built-in Thermal
Transistor/Diode
Overtemperature Shutdown
1.7 V to 3.6 V
TMP451
www.ti.com
SBOS686 –JUNE 2013
±1°C Remote and Local Temperature Sensor with η-Factor and Offset Correction,
Series Resistance Cancellation, and Programmable Digital Filter
Check for Samples: TMP451
1
FEATURES
DESCRIPTION
The TMP451 is a high-accuracy, low-power remote
23
• ±1°C Accuracy for Local and Remote Diode
temperature sensor monitor with a built-in local
Sensors
temperature sensor. The remote temperature sensors
• 0.0625°C Resolution for Local and Remote
are typically low-cost discrete NPN or PNP
Channels
transistors, or substrate thermal transistors or diodes
that are integral parts of microprocessors,
• 1.7-V to 3.6-V Supply and Logic Voltage Range
microcontrollers, or FPGAs. The temperature is
• 27-µA Operating Current, 3-µA Shutdown
represented as a 12-bit digital code for both the local
Current
and the remote sensors, giving a resolution of
• Series Resistance Cancellation
0.0625°C. The temperature accuracy is ±1°C (max) in
the typical operating range for the local and the
• η-Factor and Offset Correction
remote temperature sensors. The two-wire serial
• Programmable Digital Filter
interface accepts the SMBus communication protocol.
• Diode Fault Detection
Advanced features such as series resistance
• Two-Wire and SMBus™ Serial Interface
cancellation, programmable nonideality factor (η-
• 8-Lead WSON (WDFN) Package
factor), programmable offset, programmable
temperature limits, and a programmable digital filter
APPLICATIONS
are combined to provide a robust thermal monitoring
solution with improved accuracy and noise immunity.
• Processor/FPGA Temperature Monitoring
The TMP451 is ideal for high-accuracy temperature
• Smartphones and Tablets
measurements in a variety of consumer, computing,
• Servers, Desktops, and Notebooks
industrial, automotive, and communications systems.
• Telecom Equipment and Storage Area
It is specified for operation over a supply voltage
Networks (SAN)
range of 1.7 V to 3.6 V and a temperature range of
–40°C to +125°C.
• Automotive and Embedded Systems
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.
2SMBus is a trademark of Intel Corporation.
3All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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