LM90 Datasheet | National Semiconductor

LM90 ±3˚C Accurate, Remote Diode and Local Digital Temperature Sensor with Two-Wire Interface February 2002 ±3˚C Accurate, Remote Diode and Local Digital Temperature Sensor with Two-Wire Interface General Description 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 temperature of any ASIC can be accurately determined using the LM90 as long as a dedicated diode (semiconductor junction) is available on the target die. The LM90 remote sensor...