Product details

Local sensor accuracy (max) 0.35 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) 13 Remote channels (#) 8 Addresses 4 Rating Catalog
Local sensor accuracy (max) 0.35 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) 13 Remote channels (#) 8 Addresses 4 Rating Catalog
DSBGA (YFF) 16 3.24 mm² 1.8 x 1.8 VQFN (RGT) 16 9 mm² 3 x 3
  • 8-Channel Remote Diode Temperature Sensor Accuracy: ±0.75°C (Maximum)
  • Local and Remote Diode Accuracy: ±0.75°C (Maximum)
  • Local Temperature Sensor Accuracy for the DSBGA Package: ±0.35°C (Maximum)
  • Temperature Resolution: 0.0625°C
  • Supply and Logic Voltage Range: 1.7 V to 3.6 V
  • 67-µA Operating Current (1 SPS, All Channels Active)
  • 0.3-µA Shutdown Current
  • Remote Diode: Series Resistance Cancellation,
    η-Factor Correction, Offset Correction, and Diode Fault Detection
  • Register Lock Function Secures Key Registers
  • I2C or SMBus™ Compatible Two-Wire Interface With Pin-Programmable Address
  • 16-Bump DSBGA and 16-Pin VQFN Packages
  • 8-Channel Remote Diode Temperature Sensor Accuracy: ±0.75°C (Maximum)
  • Local and Remote Diode Accuracy: ±0.75°C (Maximum)
  • Local Temperature Sensor Accuracy for the DSBGA Package: ±0.35°C (Maximum)
  • Temperature Resolution: 0.0625°C
  • Supply and Logic Voltage Range: 1.7 V to 3.6 V
  • 67-µA Operating Current (1 SPS, All Channels Active)
  • 0.3-µA Shutdown Current
  • Remote Diode: Series Resistance Cancellation,
    η-Factor Correction, Offset Correction, and Diode Fault Detection
  • Register Lock Function Secures Key Registers
  • I2C or SMBus™ Compatible Two-Wire Interface With Pin-Programmable Address
  • 16-Bump DSBGA and 16-Pin VQFN Packages

The TMP468 device is a multi-zone, high-accuracy, low-power temperature sensor using a two-wire, SMBus or I2C compatible interface. Up to eight remote diode-connected temperature zones can be monitored simultaneously in addition to the local temperature. Aggregating the temperature measurements across a system allows improved performance through tighter guard bands and can reduce board complexity. A typical use case is for monitoring the temperature across different processors, such as MCUs, GPUs, and FPGAs in complex systems such as servers and telecommunications equipment. Advanced features such as series resistance cancellation, programmable non-ideality factor, programmable offset, and programmable temperature limits are included to provide a robust thermal monitoring solution with improved accuracy and noise immunity.

Each of the eight remote channels (and the local channel) can be programmed independently with two thresholds that are triggered when the corresponding temperature is exceeded at the measured location. In addition, there is a programmable hysteresis setting to avoid constant toggling around the threshold.

The TMP468 device provides high accuracy (0.75°C) and high resolution (0.0625°C) measurement capabilities. The device supports low voltage rails (1.7 V to 3.6 V), common two-wire interfaces, and is available in a small, space efficient package (3 mm × 3 mm or 1.6 mm × 1.6 mm) for easy integration into computing systems. The remote junction supports a temperature range from –55°C to +150°C.

The TMP468 device is a multi-zone, high-accuracy, low-power temperature sensor using a two-wire, SMBus or I2C compatible interface. Up to eight remote diode-connected temperature zones can be monitored simultaneously in addition to the local temperature. Aggregating the temperature measurements across a system allows improved performance through tighter guard bands and can reduce board complexity. A typical use case is for monitoring the temperature across different processors, such as MCUs, GPUs, and FPGAs in complex systems such as servers and telecommunications equipment. Advanced features such as series resistance cancellation, programmable non-ideality factor, programmable offset, and programmable temperature limits are included to provide a robust thermal monitoring solution with improved accuracy and noise immunity.

Each of the eight remote channels (and the local channel) can be programmed independently with two thresholds that are triggered when the corresponding temperature is exceeded at the measured location. In addition, there is a programmable hysteresis setting to avoid constant toggling around the threshold.

The TMP468 device provides high accuracy (0.75°C) and high resolution (0.0625°C) measurement capabilities. The device supports low voltage rails (1.7 V to 3.6 V), common two-wire interfaces, and is available in a small, space efficient package (3 mm × 3 mm or 1.6 mm × 1.6 mm) for easy integration into computing systems. The remote junction supports a temperature range from –55°C to +150°C.

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Technical documentation

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Type Title Date
* Data sheet TMP468 9-Channel (8-Remote and 1-Local), High-Accuracy Temperature Sensor datasheet (Rev. B) PDF | HTML 16 Jun 2017
Application note How to Read and Interpret Digital Temperature Sensor Output Data PDF | HTML 12 Apr 2024
Application note Remote Temperature Transistor Sensor Selection Guide PDF | HTML 24 Mar 2021
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 TMP468EVM and TMP468QFNEVM User's Guide (Rev. B) 24 Jul 2019

Design & development

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

Evaluation board

TMP468EVM — TMP468EVM 8 Channel Remote and 1 Local Temperature Sensor Evaluation Board

The TMP468 device is a high-accuracy, low-power, 8-channel remote temperature sensor 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 (...)

User guide: PDF
Support software

SBOC479 TMP468EVM Software

Supported products & hardware

Supported products & hardware

Products
Digital temperature sensors
TMP468 ±0.75⁰C High-Accuracy Multi-channel Remote and Local Temperature Sensor
Hardware development
Evaluation board
TMP468EVM TMP468EVM 8 Channel Remote and 1 Local Temperature Sensor Evaluation Board
Simulation model

TMP468 IBIS Model (Rev. A)

SBOMAC6A.ZIP (42 KB) - IBIS Model
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
Package Pins CAD symbols, footprints & 3D models
DSBGA (YFF) 16 Ultra Librarian
VQFN (RGT) 16 Ultra Librarian

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  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

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