The LM35 is a precision integrated-circuit temperature sensor, 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 ±0.25°C at room temperature and ±0.75°C over the full 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.
Features:
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Calibrated Directly in ° Celsius (Centigrade)
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Linear +10mV/°C Scale Factor
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0.5°C Ensured Accuracy (at +25°C)
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Rated for (-40+110)°C Range
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Suitable for Remote Applications
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Operates from 4 to 30V
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Less than 60μA Current Drain
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Low Self-Heating, 0.08°C in Still Air
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Nonlinearity Only ±0.25°C Typical
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Low Impedance Output, 0.1W for 1mA Load