Datasheet > LM32CIMTX

LM32CIMTX

更新时间： 2024-11-11 21:53:47

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
24页	336K
描述
Dual Thermal Diode Temperature Sensor with SensorPath Bus

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数据手册

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LM32CIMTX 数据手册

May 2004

LM32

Dual Thermal Diode Temperature Sensor with

™

SensorPath Bus

n 2 remote diode temperature sensor zones

n Internal local temperature zone

n 0.5 ˚C resolution

n Measures temperatures up to 140 ˚C

n 14-lead TSSOP package

General Description

The LM32 is a digital temperature sensor that measures 3

temperature zones and has a single-wire interface compat-

ible with National Semiconductor’s SensorPath bus. Sensor-

Path data is pulse width encoded, thereby allowing the LM32

to be easily connected to many general purpose micro-

controllers. Several National Semiconductor Super I/O prod-

ucts include a fully integrated SensorPath master, that when

connected to an LM32 can realize a hardware monitor func-

tion that includes limit checking for measured values, au-

tonomous fan speed control and many other functions.

Key Specifications

n Temperature Sensor Accuracy

n Temperature Range:

— LM32 junction

3 ˚C (max)

0 ˚C to +85 ˚C

— Remote Temp Accuracy

0 ˚C to +100 ˚C

+3.0 V to +3.6 V

0.5 mA (typ)

The LM32 measures the temperature of its own die as well

as two external devices such as a processor thermal diode

or a diode connected transistor. The LM32 can resolve tem-

peratures up to 255˚C and down to -256˚C. The operating

temperature range of the LM32 is 0˚C to +125˚C. The ad-

dress programming pin allows two LM32s to be placed on

one SensorPath bus.

n Power Supply Voltage

n Average Power Supply Current

n Conversion Time (all Channels)

22.5ms to 1456ms

Applications

n Microprocessor based equipment

(Motherboards, Video Cards, Base-stations, Routers,

ATMs, Point of Sale, …)

n Power Supplies

Features

SensorPath Interface

— 2 hardware programmable addresses

Typical Application

20071101

™

SensorPath is a trademark of National Semiconductor Corporation

DS200711

www.national.com

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