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TMP461
D+
D-
SCL
SDA
THERM
GND
V+
ALERT /
THERM2
Processor or
ASIC
SMBus
Controller
1
2
3
4 6
9
8
7
1.7 V to 3.6 V 1.7 V to 3.6 V
Built-in Thermal
Transistor/Diode
Over-Temperature Shutdown
10
5
A1
A0
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TMP461
SBOS742 –JUNE 2015
TMP461 High-Accuracy Remote and Local Temperature Sensor with Pin-Programmable
Bus Address
1 Features 3 Description
The TMP461 device is a high-accuracy, low-power
1
• ±0.75°C Remote Diode Temperature Sensor
remote temperature sensor monitor with a built-in
Accuracy
local temperature sensor. The remote temperature
• ±1°C Local Temperature Sensor Accuracy
sensors are typically low-cost discrete NPN or PNP
• ±0.8°C Accuracy for Local and Remote Diode
transistors, substrate thermal transistors, or diodes
that are integral parts of microprocessors,
Sensors
microcontrollers, or FPGAs. The temperature is
• 0.0625°C Resolution for Local and Remote
represented as a 12-bit digital code for both the local
Channels
and the remote sensors providing a resolution of
• 1.7-V to 3.6-V Supply and Logic Voltage Range
0.0625°C. The two-wire serial interface accepts the
• 35-µA Operating Current (1 SPS), 3-µA Shutdown SMBus communication protocol with up to 9 different
pin-programmable addresses.
Current
• Series Resistance Cancellation
Advanced features such as series resistance
cancellation, programmable nonideality factor (η-
• η-Factor and Offset Correction
factor), programmable offset, programmable
• Programmable Digital Filter
temperature limits, and a programmable digital filter
• Diode Fault Detection
are combined to provide a robust thermal monitoring
solution with improved accuracy and noise immunity.
• Two-Wire and SMBus™ Serial Interface with Pin-
Programmable Address
The TMP461 is ideal for multi-location, high-accuracy
• 10-Lead WQFN Package
temperature measurements in a variety of
communication, computing, instrumentation, and
industrial applications. The device is specified for
2 Applications
operation over a supply voltage range of 1.7 V to
• Processor Temperature Monitoring
3.6 V, and a temperature range of –40°C to 125°C.
• Telecommunication Equipment
Device Information
• Servers and Personal Computers
PART NUMBER PACKAGE BODY SIZE (NOM)
• Precision Instruments
TMP461 WQFN (10) 2.00 mm × 2.00 mm
• Test Equipment
• LED Lighting Thermal Control
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCT PREVIEW Information. Product in design phase of
development. Subject to change or discontinuance without notice.
