LM95241CIMM

• Accurate sensory death temperature at the junction of remote ICs or diodes
• Precision temperature measurement using "thermal diodes" TruTherm technology
• The thermal diode analogs the input stage of the filter
• Digital filtering of thermal diodes
• Intel processors with 65nm or 90nm processes or 2N3904 are not ideal
• Remote diode fault detection
• Local temperature sensing
• Remote temperature readings without digital filtering:
• LSb of a comet at 0.125 °
• 10-bit plus symbol bit or 11-bit programmable resolution
• 11-bit resolution for temperatures above 127°C
• Remote temperature readings with digital filtering:
• 0.03125°C LSB with filtration
• 12-bit plus symbol bit or 13-bit programmable resolution
• 13-bit resolution for temperatures above 127°C
• Local temperature readings:
• 0.25℃
• 9-digit plus
• Status register support
• Programmable slew rate that allows users to optimize power consumption
• Shutdown mode one-time transition control
• SMBus 2.0 compatible interface with support for timeouts
• 8-pin MSOP package

illustrate

LM95241 is an accurate dual remote diode temperature sensor (rapid diagnostic detection method) using National Semiconductor's TruTherm technology. The 2-wire serial interface is LM95241 compatible with SMBus 2.0. LM95241 can sense three temperature zones, which can measure the temperature of its own die and the transistor connected by two diodes. LM95241 includes digital filtering and an advanced input stage that includes analog filtering and TruTherm technology to reduce processor-to-processor propagation. Diode-connected transistors can be found in Intel and AMD processors with a "thermal diode" or can simply be connected to MMBT3904 transistor diodes. TruTherm technology can accurately measure "thermal diodes" found in geometries as small as 90nm and 65nm. LM95241 support for user-selectable thermal diodes is not ideal, whether in Intel 90nm or 65nm processes or 2N3904 processors.

LM95241 remote temperature readout resolution format can be programmed as an 11-bit signed or unsigned digital filtering function. When the resolution of the filtering function is increased to 13 bits, signed or unsigned. In symbol mode, LM95241 remote diode readings can resolve temperatures above 127°C. The local temperature readings have a 9-digit plus resolution.

Key specifications:

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• Processor/computer system thermal management

• (e.g. laptops, desktops, workstations, servers)
• Electronic test equipment
• Office electronics