The LM95221 is a dual remote diode temperature sensor inan 8-lead MSOP package. The 2-wire serial interface of theLM95221 is compatible with SMBus 2.0. The LM95221 cansense three temperature zones, it can measure the temperatureof its own die as well as two diode connected transistors.The diode connected transistors can be a thermal diodeas found in Pentium and AMD processors or can simply be adiode connected MMBT3904 transistor. The LM95221 resolutionformat for remote temperature readings can be programmedto be 10-bits plus sign or 11-bits unsigned. In theunsigned mode the LM95221 remote diode readings canresolve temperatures above 127°C. Local temperature readingshave a resolution of 9-bits plus sign.
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