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LM35
SNIS159H – AUGUST 1999 – REV...
Description
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LM35
SNIS159H – AUGUST 1999 – REVISED DECEMBER 2017
LM35 Precision Centigrade Temperature Sensors
1 Features
1 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 V to 30 V Less Than 60-μA Current Drain Low Self-Heating, 0.08°C in Still Air Non-Linearity Only ±¼°C Typical Low-Impedance Output, 0.1 Ω for 1-mA Load
2 Applications
Power Supplies Battery Management HVAC Appliances
3 Description
The LM35 series are precision integrated-circuit temperature devices with an output voltage linearlyproportional to the Centigrade temperature. The LM35 device 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 device 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. Lower cost is assured by trimming and calibration at the wafer level. The low-output impedance, linear output, and precise inherent calibration of the LM35 device makes interfacing to readout or control circuitry especially easy. The device is used with single power supplie...
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