The LM86 is an 11-bit digital temperature sensor with a 2-wire System Management Bus
(SMBus) serial interface. The LM86 accurately measures its own temperature as well as the
temperature of an external device, such as processor thermal diode or diode connected transistor
such as the 2N3904. The temperature of any ASIC can be accurately determined using the LM86 as long
as a dedicated diode (semiconductor junction) is available on the target die. The LM86 remote
sensor accuracy of ±0.75°C is factory trimmed for the 1.008 typical nonideality factor of the
mobile Pentium III thermal diode.
The LM86 has an Offset register to allow measuring other diodes without requiring continuous
software management. Contact firstname.lastname@example.org to obtain the latest data for new
Activation of the ALERT output occurs when any temperature goes
outside a preprogrammed window set by the HIGH and LOW temperature limit registers or exceeds the
T_CRIT temperature limit. Activation of the T_CRIT_A occurs when any
temperature exceeds the T_CRIT programmed limit. The LM86 is pin and register compatible with the
the Analog Devices ADM1032 and Maxim MAX6657/8.
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