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The LM35 datasheet specifies that this ICs 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-grade scaling. The LM35 does not require any external calibration or trimming to provide typical accuracies of ±1⁄4˚C at room temperature and ±3⁄4˚C over a full −55 to +150˚C temperature range.

lm35 pin configuration

LM35 Features

  • Calibrated directly in o Celsius (Centigrade)
  • Linear + 10.0 mV/oC scale factor
  • 0.5oC accuracy guaranteeable (at +25oC)
  • Rated for full −55o to +150oC range
  • Suitable for remote applications
  • Low cost due to wafer-level trimming
  • Operates from 4 to 30 volts
  • Less than 60 µA current drain
  • Low self-heating, 0.08oC in still air
  • Nonlinearity only ±1⁄4oC typical
  • Low impedance output, 0.1 Ω for 1 mA load


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