LM90 Datasheet (National Semiconductor) - Remote Diode and Local Digital Temperature Sensor

LM90, Remote Diode and Local Digital Temperature Sensor

The LM90 is an 11-bit digital temperature sensor with a 2-wire System Management Bus (SMBus) serial interface.

The LM90 accurately measures its own temperature as well as the temperature of an external device, such as processor thermal diode or diode connected transistor such as the 2N3904.

The temp

LM90 Features

* n Accurately senses die temperature of remote ICs or diode junctions n Offset register allows sensing a variety of thermal diodes accurately n On-board local temperature sensing n 10 bit plus sign remote diode temperature data format, 0.125 ˚C resolution n Diode fault detection circuitry n T_CRIT_A