LM35

更新时间： 2024-02-24 06:23:09

品牌	Logo	应用领域
美国国家半导体 - NSC		传感器温度传感器
页数	文件大小	规格书
13页	306K
描述
Precision Centigrade Temperature Sensors

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LM35 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
包装说明：	WAFER	Reach Compliance Code：	compliant
风险等级：	5.67	最大精度（摄氏度）：	0.4 Cel
线性度（Cel）：	0.3 Cel	最高工作温度：	150 °C
最低工作温度：	-55 °C	最大输出电压：	1.5 V
最小输出电压：	-0.55 V	封装等效代码：	WAFER
电源：	4/30 V	传感器/换能器类型：	TEMPERATURE SENSOR,ANALOG,VOLTAGE OUTPUT
子类别：	Other Sensors	最大供电电压：	30 V
最小供电电压：	4 V	技术：	BIPOLAR
温度系数：	POSITIVE ppm/ °C	Base Number Matches：	1

LM35 数据手册

November 2000

LM35

Precision Centigrade Temperature Sensors

aged in hermetic TO-46 transistor packages, while the

LM35C, LM35CA, and LM35D are also available in the

plastic TO-92 transistor package. The LM35D is also avail-

able in an 8-lead surface mount small outline package and a

plastic TO-220 package.

General Description

The LM35 series are precision integrated-circuit temperature

sensors, whose output voltage is linearly proportional to the

Celsius (Centigrade) temperature. The LM35 thus has an

advantage over linear temperature sensors calibrated in

˚ Kelvin, as the user is not required to subtract a large

constant voltage from its output to obtain convenient Centi-

Features

n Calibrated directly in ˚ Celsius (Centigrade)

n Linear + 10.0 mV/˚C scale factor

n 0.5˚C accuracy guaranteeable (at +25˚C)

n Rated for full −55˚ to +150˚C range

n Suitable for remote applications

n Low cost due to wafer-level trimming

n Operates from 4 to 30 volts

grade scaling. The LM35 does not require any external

calibration or trimming to provide typical accuracies of

⁄

4˚C

at room temperature and

⁄ ˚C over a full −55 to +150˚C

temperature range. Low cost is assured by trimming and

calibration at the wafer level. The LM35’s low output imped-

ance, linear output, and precise inherent calibration make

interfacing to readout or control circuitry especially easy. It

can be used with single power supplies, or with plus and

minus supplies. As it draws only 60 µA from its supply, it has

very low self-heating, less than 0.1˚C in still air. The LM35 is

rated to operate over a −55˚ to +150˚C temperature range,

while the LM35C is rated for a −40˚ to +110˚C range (−10˚

with improved accuracy). The LM35 series is available pack-

n Less than 60 µA current drain

n Low self-heating, 0.08˚C in still air

n Nonlinearity only

⁄4˚C typical

n Low impedance output, 0.1 Ω for 1 mA load

Typical Applications

DS005516-4

DS005516-3

Choose R = −V /50 µA

=+1,500 mV at +150˚C

= +250 mV at +25˚C

= −550 mV at −55˚C

OUT

FIGURE 1. Basic Centigrade Temperature Sensor

(+2˚C to +150˚C)

FIGURE 2. Full-Range Centigrade Temperature Sensor

DS005516

www.national.com

12 3 4 5 6 7...13

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