TMP451_V01中文資料德州儀器數(shù)據(jù)手冊PDF規(guī)格書

1 Features

1? ±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

2 Applications

? Processor and FPGA Temperature Monitoring

? Smart Phones and Tablets

? Servers, Desktops, and Notebooks

? Telecom Equipment and Storage Area Networks

(SANs)

3 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.