LM82CIMQA

更新时间： 2024-01-28 16:11:11

品牌	Logo	应用领域
美国国家半导体 - NSC		二极管传感器温度传感器
页数	文件大小	规格书
17页	345K
描述
Remote Diode and Local Digital Temperature Sensor with Two-Wire Interface

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中文翻译

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数据手册
替代型号

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LM82CIMQA 数据手册

January 2000

LM82

Remote Diode and Local Digital Temperature Sensor

with Two-Wire Interface

n On-board local temperature sensing

General Description

n SMBus and I²C compatible interface, supports

The LM82 is a digital temperature sensor with a 2 wire serial

SMBus 1.1 TIMEOUT

interface that senses the voltage and thus the temperature of

n Two interrupt outputs: INT and T_CRIT_A

a remote diode using a Delta-Sigma analog-to-digital con-

verter with a digital over-temperature detector. The LM82 ac-

curately senses its own temperature as well as the tempera-

n Register readback capability

n 7 bit plus sign temperature data format, 1 ˚C resolution

ture 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 di-

ode (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.

n 2 address select pins allow connection of 9 LM82s on a

single bus

Key Specifications

Supply Voltage

Supply Current

3.0V to 3.6V

0.8mA (max)

Local Temp Accuracy (includes quantization error)

0˚C to +85˚C

3.0˚C (max)

Remote Diode Temp Accuracy (includes quantization

The host can program as well as read back the state of the

T_CRIT register and the 2 T_HIGH registers. Three state

logic inputs allow two pins (ADD0, ADD1) to select up to 9

SMBus address locations for the LM82. The sensor powers

up with default thresholds of 127˚C for T_CRIT and all

T_HIGHs. The LM82 is pin for pin and register compatible

with the LM84, Maxim MAX1617 and Analog Devices

ADM1021.

error)

+25˚C to +100˚C

0˚C to +125˚C

3˚C (max)

4˚C (max)

Applications

n System Thermal Management

n Computers

Features

n Electronic Test Equipment

n Office Electronics

n HVAC

n Accurately senses die temperature of remote ICs, or

diode junctions

Simplified Block Diagram

DS101297-1

™

SMBus is a trademark of the Intel Corporation.

Pentium II^®is a registered trademark of the Intel Corporation.

C^®is a registered trademark of the Philips Corporation.

DS101297

www.national.com

12 3 4 5 6 7...17

中文翻译

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LM82CIMQA 替代型号

型号	品牌	替代类型	描述	数据表
LM82CIMQA/NOPB	TI	功能相似	具有 SMBus 和 I2C 接口的远程和本地温度传感器 \| DBQ \| 16 \| -40
LM82CIMQAX/NOPB	TI	功能相似	具有 SMBus 和 I2C 接口的远程和本地温度传感器 \| DBQ \| 16 \| -40

与LM82CIMQA相关器件

型号	品牌	获取价格	描述	数据表
LM82CIMQA/NOPB	TI	获取价格	具有 SMBus 和 I2C 接口的远程和本地温度传感器 \| DBQ \| 16 \| -40
LM82CIMQAX	NSC	获取价格	Remote Diode and Local Digital Temperature Sensor with Two-Wire Interface
LM82CIMQAX/NOPB	TI	获取价格	具有 SMBus 和 I2C 接口的远程和本地温度传感器 \| DBQ \| 16 \| -40
LM83	NSC	获取价格	Triple-Diode Input and Local Digital Temperature Sensor with Two-Wire Interface
LM83	TI	获取价格	具有 SMBus 和 I2C 接口且兼容 ACPI 的三路远程和本地温度传感器
LM8300	TI	获取价格	LM8300/LM8500 Four Wire Resistive Touchscreen Controller with Brownout
LM8300	NSC	获取价格	Four Wire Resistive Touchscreen Controller with Brownout
LM8300HLQ9	NSC	获取价格	Four Wire Resistive Touchscreen Controller with Brownout
LM8300HLQ9/NOPB	TI	获取价格	SPECIALTY CONSUMER CIRCUIT, QCC44, LLP-44
LM8300HMT9	NSC	获取价格	Four Wire Resistive Touchscreen Controller with Brownout

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