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Precision Centigrade Temperature Sensor

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Precision Centigrade Temperature Sensor Analog Serial 2 Wire 3 Pin


The LM35 series 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 Centigrade scaling. The LM35 does not require any external calibration or trimming to provide typical accuracies of ±1/4°C at room temperature and ±¾°C over a full -55 to +150°C temperature range. Low cost is assured by trimming and calibration at the wafer level. The LM35's low output impedance, linear output, and precise inherent calibration make interfacing to readout or control circuitry especially easy. It can be used with single power supplies, or with plus and minus supplies. As it draws only 60 uA from its supply, it has very low self-heating, less than 0.1°C in still air. The LM35 is rated to operate over a -55° to +150°C temperature range, while the LM35C is rated for a -40° to +110°C range (±10° with improved accuracy).


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

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  • Specification Value
    Supplier PackageTO-92 3
    Interface Type2-Wire
    Output TypeAnalog
    FunctionTemp Sensor
    Sensor Gain10mV/°C
    Minimum Operating Supply Voltage4V
    Typical Operating Supply Voltage5V, 9V, 12V, 15V, 18V, 24V
    Maximum Operating Supply Voltage30V
    Minimum Operating Temperature0°C
    Maximum Operating Temperature100°C
    MountingThrough Hole
    Product Width4.19mm(Max)
    Product Height5.2mm(Max)
    Product Length5.2mm(Max)
    Product TypeTemperature Sensor

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