LM86 datasheet(1/21 Pages) NSC

部件名	LM86

功能描述	짹0.75째C Accurate, Remote Diode and Local Digital Temperature Sensor with Two-Wire Interface

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制造商	NSC [National Semiconductor (TI)]

网页	http://www.national.com

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LM86

±0.75˚C Accurate, Remote Diode and Local Digital

Temperature Sensor with Two-Wire Interface

General Description

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 non-ideality factor of the mobile Pen-

tium™

III thermal diode. The LM86 has an Offset

register

to

allow

measuring

other

diodes

without

requiring

continuous

software

management.

Contact

hardware.monitor.team@nsc.com to obtain the latest data for

new processors.

Activation of the ALERT output occurs when any tempera-

ture 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.

Features

n

Accurately senses die temperature of remote ICs or

diode junctions

n

Offset register allows sensing a variety of thermal

diodes accurately

n

On-board local temperature sensing

n

10 bit plus sign remote diode temperature data format,

0.125 ˚C resolution

n

T_CRIT_A output useful for system shutdown

n

ALERT output supports SMBus 2.0 protocol

n

SMBus 2.0 compatible interface, supports TIMEOUT

n

8-pin MSOP and SOIC packages

Key Specifications

j Supply Voltage

3.0V to 3.6V

j Supply Current

0.8mA (typ)

j Local Temp Accuracy (includes quantization error)

T

A=25˚C to 125˚C

±3.0˚C (max)

j Remote Diode Temp Accuracy (includes quantization

error)

T

A=30˚C, TD=80˚C

±0.75˚C (max)

T

A=30˚C to 50˚C, TD=60˚C to 100˚C

±1.0˚C (max)

T

A=0˚C to 85˚C, TD=25˚C to 125˚C

±3.0˚C (max)

Applications

n

Computer System Thermal Management

(e.g. Laptop, Desktop, Workstations, Server)

n

Electronic Test Equipment

n

Office Electronics

Simplified Block Diagram

10130301

Pentium™ is a trademark of Intel Corporation.

April 2003

DS101303

www.national.com

类似零件编号 - LM86

制造商	部件名	数据表	功能描述
Texas Instruments	LM86	1Mb / 33P	짹0.75째C Accurate, Remote Diode and Local Digital Temperature Sensor With Two-Wire Interface
	LM86	1,012Kb / 38P	±0.75°C Accurate, Remote Diode and Local Digital Temperature Sensor With Two-Wire Interface REVISED MARCH 2013
	LM86CIM	1Mb / 33P	짹0.75째C Accurate, Remote Diode and Local Digital Temperature Sensor With Two-Wire Interface
	LM86CIM	1,012Kb / 38P	±0.75°C Accurate, Remote Diode and Local Digital Temperature Sensor With Two-Wire Interface REVISED MARCH 2013
	LM86CIM.A	1,012Kb / 38P	±0.75°C Accurate, Remote Diode and Local Digital Temperature Sensor With Two-Wire Interface REVISED MARCH 2013

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