lm35 - LM35 V S R1 V OUT J V S LM35 V S(4 V to 20 V OUTPUT...

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LM35 +V S R1 V OUT J V S LM35 +V S (4 V to 20 V) OUTPUT 0 mV + 10.0 mV/°C Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM35 SNIS159D –AUGUST 1999–REVISED OCTOBER 2013 LM35 Precision Centigrade Temperature Sensors 1 FEATURES DESCRIPTION The LM35 series are precision integrated-circuit 2 Calibrated Directly in ° Celsius (Centigrade) temperature sensors, with an output voltage linearly Linear + 10 mV/°C Scale Factor proportional to the Centigrade temperature. Thus the 0.5°C Ensured Accuracy (at +25°C) LM35 has an advantage over linear temperature sensors calibrated in ° Kelvin, as the user is not Rated for Full 55°C to +150°C Range required to subtract a large constant voltage from the Suitable for Remote Applications output to obtain convenient Centigrade scaling. The Low Cost Due to Wafer-Level Trimming LM35 does not require any external calibration or trimming to provide typical accuracies of ±¼°C at Operates from 4 to 30 V room temperature and ±¾°C over a full 55°C to Less than 60- μ A Current Drain +150°C temperature range. Low cost is assured by Low Self-Heating, 0.08°C in Still Air trimming and calibration at the wafer level. The low output impedance, linear output, and precise inherent Nonlinearity Only ±¼°C Typical calibration of the LM35 make interfacing to readout or Low Impedance Output, 0.1 Ω for 1 mA Load control circuitry especially easy. The device is used with single power supplies, or with plus and minus supplies. As the LM35 draws only 60 μ A from the supply, it has very low self-heating of less than 0.1°C in still air. The LM35 is rated to operate over a 55°C to +150°C temperature range, while the LM35C is rated for a 40°C to +110°C range ( 10° with improved accuracy). The LM35 series is available packaged in hermetic TO transistor packages, while the LM35C, LM35CA, and LM35D are also available in the plastic TO-92 transistor package. The LM35D is also available in an 8-lead surface-mount small- outline package and a plastic TO-220 package. Figure 1. Basic Centigrade Temperature Sensor (+2°C to +150°C) Choose R 1 = –V S / 50 μA V OUT = 1500 mV at 150°C V OUT = 250 mV at 25°C V OUT = –550 mV at –55°C Figure 2. Full-Range Centigrade Temperature Sensor 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 1999–2013, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
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