TMP442_15 Datasheet, PDF (1/29 Pages) Texas Instruments – TMP451-Q1 ±1°C Remote and Local Temperature Sensor with η-Factor and Offset Correction, Series-Resistance Cancellation, and Programmable Digital Filter

TMP441
TMP442
www.ti.com .............................................................................................................................................. SBOS425A – DECEMBER 2008 – REVISED MARCH 2009
±1°C TEMPERATURE SENSOR
with Automatic Beta Compensation,
Series-R, and η-Factor in a SOT23-8
FEATURES
1
•234 SOT23-8 PACKAGE
• ±1°C REMOTE DIODE SENSOR (MAX)
• ±1°C LOCAL TEMPERATURE SENSOR (MAX)
• AUTOMATIC BETA COMPENSATION
• SERIES RESISTANCE CANCELLATION
• η-FACTOR CORRECTION
• TWO-WIRE/SMBus™ SERIAL INTERFACE
• MULTIPLE INTERFACE ADDRESSES
• DIODE FAULT DETECTION
• RoHS-COMPLIANT AND NO Sb/Br
• TRANSISTOR AND DIODE MODEL
OPERATION
APPLICATIONS
• PROCESSOR/FPGA TEMPERATURE
MONITORING
• LCD/DLP^®/LCOS PROJECTORS
• SERVERS
• CENTRAL OFFICE TELECOM EQUIPMENT
• STORAGE AREA NETWORKS (SAN)
DESCRIPTION
The TMP441 and TMP442 are remote temperature
monitors with a built-in local temperature sensor.
Remote temperature sensor diode-connected
transistors are typically low-cost, NPN- or PNP-type
transistors or diodes that are an integral part of
microcontrollers,
microprocessors,
or
field-programmable gate arrays (FPGAs).
Remote accuracy is ±1°C for multiple IC
manufacturers, with no calibration needed. The
Two-Wire serial interface accepts SMBus write byte,
read byte, send byte, and receive byte commands to
configure the device.
The TMP441 has a single remote temperature
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
resistance cancellation, programmable non-ideality
factor (η-factor), wide remote temperature
measurement range (up to +150°C), and diode fault
detection.
The TMP441 and TMP442 are both available in an
8-lead, SOT23 package.
+5V
TMP441
1
DXP
2
DXN
3
A1
4
A0
1 Channel Local
1 Channel Remote
TMP442
1
DXP1
2
DXN1
3
DXP2
4
DXN2
1 Channel Local
2 Channels Remote
8
V+
7
SCL
6
SDA
GND
5
SMBus
Controller
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.
DLP is a registered trademark of Texas Instruments.
2
SMBus is a trademark of Intel Corporation.
3
All other trademarks are the property of their respective owners.
4
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2008–2009, Texas Instruments Incorporated