1FEATURES

234• SOT23-8 Package

• ±1°C Remote Diode Sensor (Max)

• ±2.5°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)

SUPPORTS DEFENSE, AEROSPACE AND

MEDICAL APPLICATIONS

• Controlled Baseline

• One Assembly/Test Site

• One Fabrication Site

• Available in Military (–55°C to 125°C)

Temperature Range(1)

• Extended Product Life Cycle

• Extended Product-Change Notification

• Product Traceability

DESCRIPTION

The TMP422 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 configure the device.

The TMP422 includes series resistance cancellation, programmable non-ideality factor, wide remote temperature

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

The TMP422 is available in a SOT23-8 package.