LM86CIMM

• Accurate sensory death at remote IC or diode junction temperature
• The offset register allows the induction of thermal diodes to be variously accurate
• Local temperature sensing on the plate
• 10-bit plus signed remote diode temperature data format with 0.125°C resolution
• T_CRIT_A# Output system shutdown is useful
• ALERT# outputs support SMBus for the 2.0 protocol
• SMBus 2.0 compatible interface with TIMEOUT support
• 8-pin MSOP and SOIC packages

illustrate

The LM86 is an 11-bit 2-wire System Management Bus (SMBus) serial interface digital temperature sensor. The LM86 accurately measures its own temperature as well as the temperature of external devices, such as the processor's thermal diode or the transistor connected to the 2N3904 diode. Any ASIC temperature can be accurately determined using a dedicated diode (semiconductor junction) at the target to die at the available long LM86. The LM86's remote sensor accuracy ± 0.75°C factory trim for 1.008 typical non-ideal mobile Pentium III™ thermal diode factor. The LM86 has an offset register that allows for continuous measurements without the need for additional diodes managed by the software. Contact hardware.monitor.team@nsc.com to get the latest data on the new processors.

When the ALERT# output is activated, any temperature increase occurs outside the high or low temperature limit registers set in the pre-programmed window or exceed T_CRIT temperature limit. Activate # on T_CRIT_A when the temperature exceeds T_CRIT any programming limits. The LM86's pins and registers are compatible with analog device ADM1032 and Maxim MAX6657/8.

Key specifications:

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