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Remote and Local Temperature Sensor for Thermal System Management

23rd May 2007

ES Admin

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Texas Instruments has announced an integrated +/-1C maximum remote junction temperature sensor and local temperature sensor, designed to monitor thermal diodes found in CPUs, microprocessors, graphics processing units and FPGAs. Unlike other devices, the TMP411 features programmable series resistance cancellation and diode non-ideality correction which simplify and remove the time-consuming process of individual processor resistance calibration commonly associated with remote diode monitoring.

The TMP411 provides thermal system management for a wide range of applications such as industrial controllers, servers, desktop and notebook computers, and medical equipment. Additional applications include central office telecom equipment, LCD/DLPT/LCOS projectors, storage area networks
and processor/FPGA temperature monitoring.

The TMP411 has programmable over- and under-temperature thresholds and alert pins that can be used for immediate response to potentially dangerous thermal environments - preventing system damage and enabling systems to run continuously with minimal interruption. Programmable non-ideality factor
correction can be used for any diode non-ideality factor associated with any processor.

The TMP411 operates on a standard I2C/SMBus compatible, two-wire interface and offers 9- to 12-bit resolution over a temperature range of -40C to 125C, with a remote temperature range of up to 150C. For reduced power consumption, the TMP411 can be put into sleep mode reducing current
consumption to 10uA.

The TMP411 is available now from TI and its authorized distributors in a small MSOP-8 package. It is priced at $1.75 each in 1,000-piece quantities (suggested resale pricing). SO-8 packaging will be available in 2Q07.