TMP464

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5-Channel (4-Remote and 1-Local) High-Accuracy Remote and Local Temperature Sensor

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Product details

Parameters

Local sensor accuracy (Max) (+/- C) 0.75 Operating temperature range (C) -40 to 125 Supply voltage (Min) (V) 1.7 Supply voltage (Max) (V) 3.6 Device type Remote Interface I2C, SMBus, 2-Wire Supply current (Max) (uA) 375 Temp resolution (Max) (bits) 13 Features ALERT Remote channels (#) 4 Addresses 4 Rating Catalog Approx. price (US$) 0.70 | 1ku open-in-new Find other Digital temperature sensors

Package | Pins | Size

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

Features

  • 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

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Description

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
* Datasheet TMP464 High-Accuracy 5-Channel (4-Remote and 1-Local) Temperature Sensor datasheet (Rev. C) Oct. 21, 2019
Technical articles How to choose the right thermistor for your temperature sensing application Feb. 12, 2020
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
Technical articles How sensor technology is evolving to meet cold chain needs Jun. 18, 2018
Selection guides Temperature sensing for TVs Mar. 13, 2018

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$499.00
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)

Design tools & simulation

SIMULATION MODELS Download
SBOMAE2.ZIP (42 KB) - IBIS Model
GERBER FILES Download
SBOC594A.ZIP (695 KB)

CAD/CAE symbols

Package Pins Download
VQFN (RGT) 16 View options

Ordering & quality

Support & training

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Videos

Remote Temperature Sensing with TMP464, TMP468, and Arduino

This video shows how to interface the TMP464 and TMP468 digital remote temperature sensors with the Arduino Platform.

Posted: 11-Jan-2018
Duration: 09:37

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