مشخصات:

• جریان 60 میکرو آمپر
• دقت 0.4 +/- 0.8 +/-
• ولتاژ کاری 4 تا 30 ولت
• مقیاس اندازه گیری .0.1V/oC
• کار بر مبنای درجه سلسیوس

کاربرد ها:

• سیستم‌های کنترل دما در تجهیزات صنعتی
• مانیتورینگ دما در سیستم‌های HVAC
• اندازه‌گیری دمای محیط در تجهیزات پزشکی
• کاربردهای الکترونیکی قابل حمل و دستگاه‌های باتری‌محور
• کنترل و پایش دمای موتور و تجهیزات خودرویی
• مدارهای اندازه‌گیری و کالیبراسیون آزمایشگاهی

Introduction

The LM35 series are precision integrated-circuit temperature sensors, with an output voltage linearly proportional to the Centigrade temperature. Thus the LM35 has an advantage over linear temperature sensors calibrated in Kelvin, as the user is not required to subtract a large constant voltage from the output to obtain convenient Centigrade scaling. The LM35 does not require any external calibration or trimming to provide typical accuracies of ±¼°C at room temperature and ±¾°C over a full -55°C to +150°C temperature range. The low output impedance, linear output, and precise inherent calibration of the LM35 make interfacing to readout or control circuitry especially easy. The device is used with single power supplies, or with plus and minus supplies. As the LM35 draws only 60 µA from the supply, it has a very low self-heating of less than 0.1°C in still air.

Specification

Calibrated Directly in ° Celsius (Centigrade)
Linear + 10 mV/°C Scale Factor
0.5°C Ensured Accuracy (at +25°C)
Rated for Full −55°C to +150°C Range
Suitable for Remote Applications
Low Cost Due to Wafer-Level Trimming
Operates from 4 to 30 V
Less than 60-μA Current Drain
Low Self-Heating, 0.08°C in Still Air
Nonlinearity Only ±¼°C Typical
Low Impedance Output, 0.1 Ω for 1 mA load