LM95231CIMM-2

• Accurate temperature at the junction of sensory death remote IC or diode
• TruTherm technology uses "thermal diode" precision temperature measurement
• A thermal diode simulates the input stage of filtering
• Digital filtering of thermal diodes
• The 90nm process Intel Pentium 4 processor or 2N3904 is not ideal
• Remote diode fault detection
• Local temperature sensing
• Remote temperature readings without digital filtering:
• LSb of a comet 0.125°
• 10-bit plus sign bit or 11-bit programmable resolution
• 11 bits address temperatures above 127°C
• Remote temperature readings and digital filtering:
• 0.03125°C LSB with filtration
• 12 bits plus sign bits or 13 bits of programmable resolution
• The 13-bit solution is above 127°C
• Local temperature reading:
• 0.25℃
• 9-bit plus
• Status register support
• Programmable slew rate allows the user to optimize power consumption
• Shutdown mode one-time conversion control
• SMBus 2.0 compatible interface that supports timeouts
• 8-pin MSOP package

illustrate

The LM95231 is a precision dual remote diode temperature sensor (Rapid Diagnostic Detection Method) using National Semiconductor's TruTherm technology. The LM95231 with a 2-wire serial interface is compatible with SMBus 2.0. The LM95231 can sense three temperature zones, which measure the temperature of its own die and the transistors connected by two diodes. The LM95231 includes digital filtering and an advanced input stage including analog filtering and TruTherm technology to reduce non-ideal processor-to-processor propagation. Diode-connected transistors can be found in Intel and AMD processors as a "thermal diode" or MMBT3904 transistor diodes can simply be connected. TruTherm technology can accurately measure "thermal diodes" for small geometries and 90nm and below. The LM95231 supports user-selectable thermal diodes that are not ideal using the Pentium ® 4 processor, 90nm process or 2N3904.

The LM95231 remote temperature reading resolution format can be programmed with 11-bit signed or unsigned digital filtering. When the resolution of the filtering function is increased to 13 bits with signed or unsigned. In sign mode, LM95231 remote diode readings can address temperatures above 127°C. Local temperature readings have a 9-bit plus resolution.

Main specifications

apply

• Processor/computer system thermal management (e.g. laptops, desktops, workstations, servers)
• Electronic test equipment
• Office electronics