LM95234

www.DataSheet4U.com LM95234 Quad Remote Diode and Local Temperature Sensor with SMBus Interface and TruTherm Technology ADVANCE INFORMATION August 2006 LM95234 Quad Remote Diode and Local Temperature Sensor with SMBus Interface and TruTherm™ Technology General Description LM95234 is an 11-bit digital temperature sensor with a 2-wire System Management Bus (SMBus) interface that can monitor the temperature of four remote diodes as well as its own temperature. The LM95234 can be used to very accurately monitor the temperature of up to four external devices such as microprocessors, graphics processors or diodeconnected 2N3904s. The LM95234’s TruTherm technology allows sensing of 90nm or 65nm process thermal diodes accurately. The LM95234 reports temperature in two different formats for +127.875˚C/–128˚C range and 0˚C/255˚C range. The LM95234 TCRIT1, TCRIT2 and TCRIT3 outputs are triggered when any unmasked channel exceeds its corresponding programmable limit and can be used to shutdown the system, to turn on the system fans or as a microcontroller interrupt function. The current status of the TCRIT1, TCRIT2 and TCRIT3 pins can be read back from the status registers. Mask registers are available for further control of the TCRIT outputs. Two LM95234 remote temperature channels have programmable digital filters while the other two remote channels utilize a fault-queue to minimize unwanted TCRIT events when temperature spikes are encountered. For optimum flexibility and accuracy, ...