1

FEATURES

DESCRIPTION

APPLICATIONS

TMP441

TMP442

+5V

1ChannelLocal

1ChannelRemote

1ChannelLocal

2ChannelsRemote

SCL

GND

SDA

V+

SMBus

Controller

8

5

7

6

DXP

DXN

A1

A0

1

2

3

4

DXP1

DXN1

DXP2

DXN2

1

2

3

4

TMP441

TMP442

±1°C TEMPERATURE SENSOR

with Automatic Beta Compensation,

Series-R, and

η-Factor in a SOT23-8

234

• SOT23-8 PACKAGE

The TMP441 and TMP442 are remote temperature

monitors with a built-in local temperature sensor.

• ±1°C REMOTE DIODE SENSOR (MAX)

Remote

temperature

sensor

diode-connected

• ±1°C LOCAL TEMPERATURE SENSOR (MAX)

transistors are typically low-cost, NPN- or PNP-type

• AUTOMATIC BETA COMPENSATION

transistors or diodes that are an integral part of

• SERIES RESISTANCE CANCELLATION

microcontrollers,

microprocessors,

or

field-programmable gate arrays (FPGAs).

• η-FACTOR CORRECTION

Remote

accuracy

is

±1°C

for

multiple

IC

• TWO-WIRE/SMBus™ SERIAL INTERFACE

manufacturers, with no calibration needed. The

• MULTIPLE INTERFACE ADDRESSES

Two-Wire serial interface accepts SMBus write byte,

• DIODE FAULT DETECTION

read byte, send byte, and receive byte commands to

• RoHS-COMPLIANT AND NO Sb/Br

configure the device.

• TRANSISTOR AND DIODE MODEL

The TMP441 has a single remote temperature

OPERATION

monitor with address pins. The TMP442 has dual

remote temperature monitors, and is available with

two different interface addresses. All versions include

automatic beta compensation (correction), series

• PROCESSOR/FPGA TEMPERATURE

resistance cancellation, programmable non-ideality

MONITORING

factor

(

η-factor),

wide

remote

temperature

measurement range (up to +150°C), and diode fault

• SERVERS

detection.

• CENTRAL OFFICE TELECOM EQUIPMENT

The TMP441 and TMP442 are both available in an

• STORAGE AREA NETWORKS (SAN)

8-lead, SOT23 package.

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

DLP is a registered trademark of Texas Instruments.

3

SMBus is a trademark of Intel Corporation.

4

All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2008–2009, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.