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LM82,datasheet,pdf(Remote Diod
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大小:551 |
2009-10-20
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The LM82 is a digital temperature sensor with a 2 wire serial
interface that senses the voltage and thus the temperature of
a remote diode using a Delta-Sigma analog-to-digital converter
with a digital over-temperature detector. The LM82
accurately senses its own temperature as well as the temperature
of external devices, such as Pentium II® Processors
or diode connected 2N3904s. The temperature of any
ASIC can be detected using the LM82 as long as a dedicated
diode (semiconductor junction) is available on the die.
Using the SMBus interface a host can access the LM82’s
registers at any time. Activation of a T_CRIT_A output occurs
when any temperature is greater than a programmable
comparator limit, T_CRIT. Activation of an INT output occurs
when any temperature is greater than its corresponding
programmable comparator HIGH limit.
interface that senses the voltage and thus the temperature of
a remote diode using a Delta-Sigma analog-to-digital converter
with a digital over-temperature detector. The LM82
accurately senses its own temperature as well as the temperature
of external devices, such as Pentium II® Processors
or diode connected 2N3904s. The temperature of any
ASIC can be detected using the LM82 as long as a dedicated
diode (semiconductor junction) is available on the die.
Using the SMBus interface a host can access the LM82’s
registers at any time. Activation of a T_CRIT_A output occurs
when any temperature is greater than a programmable
comparator limit, T_CRIT. Activation of an INT output occurs
when any temperature is greater than its corresponding
programmable comparator HIGH limit.
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