Product details

Local sensor accuracy (Max) (+/- C) 1 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) 40 Temp resolution (Max) (bits) 12 Features ALERT Remote channels (#) 1 Addresses 1 Rating Catalog
Local sensor accuracy (Max) (+/- C) 1 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) 40 Temp resolution (Max) (bits) 12 Features ALERT Remote channels (#) 1 Addresses 1 Rating Catalog
WSON (DQF) 8 4 mm² 2 x 2
  • ±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
  • ±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

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.

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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Design & development

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

Evaluation board

TMP451EVM — TMP451 1.7-V remote and local temperature sensor evaluation module

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 (...)
Driver or library

LM90SW-LINUX — Linux Driver for LM90

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:

  • (...)
Support software

TMP451EVM Software

SBOC436.ZIP (124329 KB)
Support software

TMP451EVM Source Code

SBOC437.ZIP (288 KB)
Simulation model

TMP451 IBIS Model

SBOM836.ZIP (59 KB) - IBIS Model
Reference designs

TIDA-00737 — Capacitor Bank Control and HMI Subsystem Reference Design for Automatic Power Factor Controller

This reference design demonstrates the working of various functional blocks of an automatic power factor controller (PFC) used in MV/LV electrical distribution. This includes accurate measurement and computation of voltages, currents, power and power factor, display of measured parameters (...)
Schematic: PDF
Package Pins Download
WSON (DQF) 8 View options

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