Product details

Local sensor accuracy (Max) (+/- C) 0.75 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 Supply current (Max) (uA) 375 Temp resolution (Max) (bits) 13 Features ALERT Remote channels (#) 4 Addresses 4 Rating Catalog
Local sensor accuracy (Max) (+/- C) 0.75 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 Supply current (Max) (uA) 375 Temp resolution (Max) (bits) 13 Features ALERT Remote channels (#) 4 Addresses 4 Rating Catalog
VQFN (RGT) 16 9 mm² 3 x 3
  • 4-Channel Remote Diode Temperature Sensor
  • Local and Remote Accuracy: ±0.75°C (Maximum)
  • Temperature Resolution: 0.0625°C
  • Supply and Logic Voltage Range: 1.7 V to 3.6 V
  • 43-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-pin VQFN Package
  • 4-Channel Remote Diode Temperature Sensor
  • Local and Remote Accuracy: ±0.75°C (Maximum)
  • Temperature Resolution: 0.0625°C
  • Supply and Logic Voltage Range: 1.7 V to 3.6 V
  • 43-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-pin VQFN Package

The TMP464 device is a high-accuracy, low-power temperature sensor using a two-wire, SMBus or I2C compatible interface. Up to four 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 four 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 TMP464 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) for easy integration into computing systems. The remote junction supports a temperature range from –55°C to +150°C. The TMP464 has a preprogrammed temperature limit of 125°C.

The TMP464 device is a high-accuracy, low-power temperature sensor using a two-wire, SMBus or I2C compatible interface. Up to four 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 four 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 TMP464 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) for easy integration into computing systems. The remote junction supports a temperature range from –55°C to +150°C. The TMP464 has a preprogrammed temperature limit of 125°C.

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Technical documentation

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Type Title Date
* Data sheet TMP464 High-Accuracy 5-Channel (4-Remote and 1-Local) Temperature Sensor datasheet (Rev. C) 21 Oct 2019
Application note Improving System Reliability in Auto and Ind. Cameras w/ AccurateTemp. Sensing 03 Jan 2022
Application note Remote Temperature Transistor Sensor Selection Guide 24 Mar 2021
Application note How to Boost Your CPU, GPU, and SoC Performance Through Thermal Accuracy 22 Sep 2020
Technical article How to choose the right thermistor for your temperature sensing application 13 Feb 2020
Technical article How to enable thermal safety for automotive infotainment and cluster systems 15 Oct 2019
Technical article Driving industrial innovation with small-size sensors 12 Sep 2019
Technical article How to select a temperature sensor probe 18 Feb 2016

Design & development

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Evaluation board

TMP468QFNEVM — 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 (...)
Simulation model

TMP464 IBIS Model

SBOMAE2.ZIP (42 KB) - IBIS Model
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VQFN (RGT) 16 View options

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