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TMP461

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High accuracy remote and local temperature sensor with pin-programmable bus address

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Data sheet

TMP461

ACTIVE
Data sheet Order now

Product details

Local sensor accuracy (max) 1 Type Remote Operating temperature range (°C) -40 to 125 Supply voltage (min) (V) 1.7 Interface type I2C, SMBus Supply voltage (max) (V) 3.6 Features ALERT Supply current (max) (µA) 375 Temp resolution (max) (bps) 12 Remote channels (#) 1 Addresses 9 Rating Catalog
Local sensor accuracy (max) 1 Type Remote Operating temperature range (°C) -40 to 125 Supply voltage (min) (V) 1.7 Interface type I2C, SMBus Supply voltage (max) (V) 3.6 Features ALERT Supply current (max) (µA) 375 Temp resolution (max) (bps) 12 Remote channels (#) 1 Addresses 9 Rating Catalog
WQFN (RUN) 10 4 mm² 2 x 2
  • Remote Diode Temperature Sensor Accuracy: ±0.75°C
  • Local Temperature Sensor Accuracy: ±1°C
  • Resolution for Local and Remote Channels: 0.0625°C
  • Supply and Logic Voltage Range: 1.7 V to 3.6 V
  • 35-µA Operating Current (1 SPS),
    3-µA Shutdown Current
  • Series Resistance Cancellation
  • η-Factor and Offset Correction
  • Programmable Digital Filter
  • Diode Fault Detection
  • Two-Wire and SMBus™ Serial Interface Compatible with Pin-Programmable Address
  • 10-Lead WQFN Package
  • Remote Diode Temperature Sensor Accuracy: ±0.75°C
  • Local Temperature Sensor Accuracy: ±1°C
  • Resolution for Local and Remote Channels: 0.0625°C
  • Supply and Logic Voltage Range: 1.7 V to 3.6 V
  • 35-µA Operating Current (1 SPS),
    3-µA Shutdown Current
  • Series Resistance Cancellation
  • η-Factor and Offset Correction
  • Programmable Digital Filter
  • Diode Fault Detection
  • Two-Wire and SMBus™ Serial Interface Compatible with Pin-Programmable Address
  • 10-Lead WQFN Package

The TMP461 device is a high-accuracy, low-power remote temperature sensor monitor with a built-in local temperature sensor. The remote temperature sensors are typically low-cost discrete NPN or PNP transistors, or substrate thermal transistors or diodes that are integral parts of microprocessors, microcontrollers, or field-programmable gate arrays (FPGAs). Temperature is represented as a 12-bit digital code for both local and remote sensors, giving a resolution of 0.0625°C. The two-wire serial interface accepts the SMBus communication protocol with up to nine different pin-programmable addresses.

Advanced features [such as series resistance cancellation, programmable nonideality factor (η-factor), programmable offset, programmable temperature limits, and a programmable digital filter] are combined to provide a robust thermal monitoring solution with improved accuracy and noise immunity.

The TMP461 is ideal for multi-location, high-accuracy temperature measurements in a variety of communication, computing, instrumentation, and industrial applications. The device is specified for operation over a supply voltage range of 1.7 V to 3.6 V, and a temperature range of –40°C to 125°C.

The TMP461 device is a high-accuracy, low-power remote temperature sensor monitor with a built-in local temperature sensor. The remote temperature sensors are typically low-cost discrete NPN or PNP transistors, or substrate thermal transistors or diodes that are integral parts of microprocessors, microcontrollers, or field-programmable gate arrays (FPGAs). Temperature is represented as a 12-bit digital code for both local and remote sensors, giving a resolution of 0.0625°C. The two-wire serial interface accepts the SMBus communication protocol with up to nine different pin-programmable addresses.

Advanced features [such as series resistance cancellation, programmable nonideality factor (η-factor), programmable offset, programmable temperature limits, and a programmable digital filter] are combined to provide a robust thermal monitoring solution with improved accuracy and noise immunity.

The TMP461 is ideal for multi-location, high-accuracy temperature measurements in a variety of communication, computing, instrumentation, and industrial applications. The device is specified for operation over a supply voltage range of 1.7 V to 3.6 V, and a temperature range of –40°C to 125°C.
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Technical documentation

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Type Title Date
* Data sheet TMP461 High-Accuracy Remote and Local Temperature Sensor with Pin-Programmable Bus Address datasheet (Rev. B) PDF | HTML 18 Aug 2016
Application note How to Read and Interpret Digital Temperature Sensor Output Data PDF | HTML 12 Apr 2024
Application brief Improving System Reliability in Auto and Ind. Cameras w/ AccurateTemp. Sensing PDF | HTML 03 Jan 2022
Application note Remote Temperature Transistor Sensor Selection Guide PDF | HTML 24 Mar 2021
Technical article Interface to sensors in seconds with ASC Studio PDF | HTML 12 Nov 2020
Application note How to Boost Your CPU, GPU, and SoC Performance Through Thermal Accuracy PDF | HTML 22 Sep 2020
Application note Optimizing Remote Diode Temperature Sensor Design (Rev. A) 18 Dec 2019
EVM User's guide TMP461EVM User’s Guide and Software Tutorial (Rev. A) 11 Sep 2019
EVM User's guide TMP461EVM-CVAL User's Guide and Software Tutorial 25 Sep 2017
EVM User's guide TMP461EVM User’s Guide and Software Tutorial 08 Jul 2015

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

TMP461EVM — TMP461 Temp Sensor Evaluation Module

The TMP461 device is a high-accuracy, low-power remote temperature sensor monitor with a built-in local temperature sensor. The remote temperature sensors are typically low-cost discrete NPN or PNP transistors, or substrate thermal transistors or diodes that are integral parts of microprocessors, (...)

User guide: PDF
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GUI for evaluation module (EVM)

SBOC453 — TMP461EVM GUI Software

Supported products & hardware

Supported products & hardware

Products
Digital temperature sensors
TMP461 — High accuracy remote and local temperature sensor with pin-programmable bus address
Hardware development
Evaluation board
TMP461EVM — TMP461 Temp Sensor Evaluation Module TMP461EVM-CVAL — Radiation Hardness Assured (RHA) High-Accuracy Remote and Local Temperature Sensor Evaluation Module
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IDE, configuration, compiler or debugger

ASC-STUDIO-TMP461 — ASC studio for configuring all aspects of the TMP461 temperature sensor

SysConfig can be used to help simplify configuration challenges and accelerate software development with the TMP461 temperature sensor.
Supported products & hardware

Supported products & hardware

Products
Digital temperature sensors
TMP461 — High accuracy remote and local temperature sensor with pin-programmable bus address
Launch
Simulation model

TMP461 and TMP461-SP IBIS MODEL

SLAM269.ZIP (53 KB) - IBIS Model
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Calculation tool

SBOC594 — Remote Temperature Sensor Calibration Tool

Supported products & hardware

Supported products & hardware

Products
Digital temperature sensors
TMP400 — Remote and Local Temperature Sensor with N-Factor and Series-R Correction in QSSOP-16 TMP411 — Remote and Local Temperature Sensor with N-Factor and Series-R Correction in MSOP-8 TMP421 — Remote and Local Temperature Sensor with N-Factor and Series-R Correction in WCSP TMP422 — Dual Remote and Local Temperature Sensor with N-Factor and Series-R Correction in WCSP TMP423 — Triple Remote and Local Temperature Sensor with N-Factor and Series-R Correction TMP431 — Remote and Local Temperature Sensor with Automatic Beta, N-Factor and Series-R Correction TMP432 — Dual Remote and Local Temp Sensor with Automatic Beta, N-Factor and Series-R Correction TMP441 — Multi-Address Remote and Local Temp Sensor with Auto Beta, N-Factor and Series-R Correction in SOT23 TMP451 — 1.7-V remote and local temperature sensor with N-factor, filtering and series-R correction TMP461 — High accuracy remote and local temperature sensor with pin-programmable bus address TMP464 — 5-Channel (4-Remote and 1-Local) High-Accuracy Remote and Local Temperature Sensor TMP468 — ±0.75⁰C High-Accuracy Multi-channel Remote and Local Temperature Sensor
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WQFN (RUN) 10 Ultra Librarian
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