TMP468

ACTIVE

±0.75⁰C High-Accuracy Multi-channel Remote and Local Temperature Sensor

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Product details

Parameters

Local sensor accuracy (Max) (+/- C) 0.35 Type Remote Operating temperature range (C) -40 to 125 Supply voltage (Min) (V) 1.7 Interface type I2C, SMBus, 2-Wire Supply voltage (Max) (V) 3.6 Supply current (Max) (uA) 375 Temp resolution (Max) (bits) 13 Features ALERT Remote channels (#) 8 Addresses 4 Rating Catalog open-in-new Find other Digital temperature sensors

Package | Pins | Size

DSBGA (YFF) 16 0 mm² 1.602 x 1.602 VQFN (RGT) 16 9 mm² 3 x 3 open-in-new Find other Digital temperature sensors

Features

  • 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

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Description

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

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 8
Type Title Date
* Datasheet TMP468 9-Channel (8-Remote and 1-Local), High-Accuracy Temperature Sensor datasheet (Rev. B) Jun. 16, 2017
Application note How to Boost Your CPU, GPU, and SoC Performance Through Thermal Accuracy Sep. 22, 2020
Technical articles How to choose the right thermistor for your temperature sensing application Feb. 12, 2020
Application note Optimizing Remote Diode Temperature Sensor Design (Rev. A) Dec. 18, 2019
Technical articles How to enable thermal safety for automotive infotainment and cluster systems Oct. 15, 2019
Technical articles Driving industrial innovation with small-size sensors Sep. 12, 2019
User guide TMP468EVM and TMP468QFNEVM User's Guide (Rev. B) Jul. 24, 2019
Technical articles How sensor technology is evolving to meet cold chain needs Jun. 18, 2018

Design & development

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

Hardware development

EVALUATION BOARD Download
Description

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 microprocessors (...)

Features
  • 8 channel I2C remote temp sensing (Accuracy ±0.75°C)
  • Breakable PCB allows for breadboard compatibility
  • Series resistance cancellation
  • 13-bit resolution (0.0625°C)
EVALUATION BOARD Download
499
Description
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 microprocessors (...)
Features
  • 8-channel I2C remote temp sensing (Accuracy ±0.75°C)
  • Breakable PCB allows for breadboard compatibility
  • Series resistance cancellation
  • 13-bit resolution (0.0625°C)

Software development

SUPPORT SOFTWARE Download
SBOC479.ZIP (178346 KB)

Design tools & simulation

SIMULATION MODEL Download
SBOMAC6A.ZIP (42 KB) - IBIS Model
GERBER FILE Download
SBOC594A.ZIP (695 KB)

CAD/CAE symbols

Package Pins Download
DSBGA (YFF) 16 View options
VQFN (RGT) 16 View options

Ordering & quality

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  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

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