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Product details

Parameters

Local sensor accuracy (Max) (+/- C) 1 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) 40 Temp resolution (Max) (bits) 12 Features ALERT Remote channels (#) 1 Addresses 1 Rating Catalog Approx. price (US$) 0.46 | 1ku open-in-new Find other Digital temperature sensors

Package | Pins | Size

WSON (DQF) 8 4 mm² 2 x 2 open-in-new Find other Digital temperature sensors

Features

  • ±1°C Accuracy for Local and Remote Diode Sensors
  • 0.0625°C Resolution for Local and Remote Channels
  • 1.7-V to 3.6-V Supply and Logic Voltage Range
  • 27-µA Operating Current, 3-µA Shutdown Current
  • Series Resistance Cancellation
  • η-Factor and Offset Correction
  • Programmable Digital Filter
  • Diode Fault Detection
  • Two-Wire and SMBus™ Serial Interface
  • 8-Lead WSON (WDFN) Package
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Description

The TMP451 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 FPGAs. The temperature is represented as a 12-bit digital code for both the local and remote sensors, giving a resolution of 0.0625°C. The temperature accuracy is ±1°C (maximum) in the typical operating range for the local and the remote temperature sensors. The two-wire serial interface accepts the SMBus communication protocol.

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 TMP451 device is ideal for high-accuracy temperature measurements in multiple locations and in a variety of automotive subsystems. 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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Download

Technical documentation

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
Description
The TMP451EVM is an evaluation module that is used to fully evaluate the TMP451, a 1.8V remote temperature sensor. The TMP451 has the capability of measuring remote temperatures and on-chip temperatures. The TMP451 is an integrated circuit that provides 1˚C accuracy temperature measurement with (...)
Features
  • Enables full evaluation of TMP451
  • Programmable Non-Ideality Factor
  • Series Resistance Cancellation
  • 12 Bit Resolution

Software development

DRIVERS & LIBRARIES Download
Linux Driver for LM90
LM90SW-LINUX The Linux driver supports the LM90 series of Remote and Local Temp Sensors. The Linux driver supports communication through the I2C bus and interfaces with the Hardware Monitoring sub-system.

 

Linux Mainline Status

Available in Linux Main line: Yes
Available through git.ti.com: N/A

Supported Devices:

  • lm90 (...)
SUPPORT SOFTWARE Download
SBOC436.ZIP (124329 KB)
SUPPORT SOFTWARE Download
SBOC437.ZIP (288 KB)

Design tools & simulation

SIMULATION MODELS Download
SBOM836.ZIP (59 KB) - IBIS Model
GERBER FILES Download
SBOC594A.ZIP (695 KB)

Reference designs

REFERENCE DESIGNS Download
Capacitor Bank Control and HMI Subsystem Reference Design for Automatic Power Factor Controller
TIDA-00737 The TIDA-00737 TI design demonstrates working of various functional blocks of an Automatic Power Factor Controller used in MV/LV electrical distribution including – Accurate measurement and computation of voltages, currents, power and power factor; Display of measured parameters using 4 digit (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
WSON (DQF) 8 View options

Ordering & quality

Support & training

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If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

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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