TMP421AIDCNT

FEATURES

• SOT23-8 PACKAGE

±1°C REMOTE DIODE SENSOR (MAX)

±1.5°C LOCAL TEMPERATURE SENSOR (MAX)

• SERIES RESISTANCE CANCELLATION

• n-FACTOR CORRECTION

• TWO-WIRE/SMBus™ SERIAL INTERFACE

• MULTIPLE INTERFACE ADDRESSES

• DIODE FAULT DETECTION

• RoHS COMPLIANT AND NO Sb/Br

APPLICATIONS

• PROCESSOR/FPGA TEMPERATURE MONITORING

• LCD/DLP®/LCOS PROJECTORS

• SERVERS

• CENTRAL OFFICE TELECOM EQUIPMENT

• STORAGE AREA NETWORKS (SAN)

DESCRIPTION

The TMP421, TMP422, and TMP423 are remote temperature sensor monitors 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  configure the device.

The TMP421, TMP422, and TMP423 include series resistance cancellation, programmable non-ideality factor, wide remote temperature measurement range (up to +150°C), and diode fault detection. The TMP421, TMP422, and TMP423 are all available in a SOT23-8 package.

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