1FEATURES

234· ±1°C REMOTE DIODE SENSOR

· ±1°C LOCAL TEMPERATURE SENSOR

· PROGRAMMABLE NON-IDEALITY FACTOR

· PROGRAMMABLE SERIES RESISTANCE

CANCELLATION

· ALERT FUNCTION

· PROGRAMMABLE RESOLUTION: 9 to 12 Bits

· PROGRAMMABLE THRESHOLD LIMITS

· TWO-WIRE/SMBus™ SERIAL INTERFACE

· MINIMUM AND MAXIMUM TEMPERATURE

MONITORS

· MULTIPLE INTERFACE ADDRESSES

· ALERT PIN CONFIGURATION

· DIODE FAULT DETECTION

APPLICATIONS

· LCD/DLP®/LCOS PROJECTORS

· SERVERS

· INDUSTRIAL CONTROLLERS

· CENTRAL OFFICE TELECOM EQUIPMENT

· DESKTOP AND NOTEBOOK COMPUTERS

· STORAGE AREA NETWORKS (SAN)

· INDUSTRIAL AND MEDICAL EQUIPMENT

· PROCESSOR/FPGA TEMPERATURE

MONITORING

DESCRIPTION

The TMP400 is a remote temperature sensor monitor

with a built-in local temperature sensor. The 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 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 program the alarm thresholds and to read

temperature data.

The TMP400 is customizable with programmable:

series resistance cancellation, non-ideality factor,

resolution, and threshold limits. Other features are:

minimum and maximum temperature monitors, wide

remote temperature measurement range (up to

+127.9375°C), diode fault detection, and temperature

alert function.

The TMP400 is available in a QSSOP-16 package.