LM35 Temperature Sensor - Temperature Sensors - Xbotics View larger

LM35 Temperature Sensor - Temperature Sensors - Xbotics

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LM35 is an integrated analog temperature sensor whose electrical output is proportional to Degree Centigrade. LM35 Sensor does not require any external calibration or trimming to provide typical accuracies. The LM35’s low output impedance, linear output, and precise inherent calibration make interfacing to readout or control circuitry especially easy.

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As such no extra components required to interface LM35 to ADC as the output of LM35 is linear with 10mv/degree scale. It can be directly interfaced to any 10 or 12 bit ADC. But if you are using an 8-bit ADC like ADC0808 or ADC0804 an amplifier section will be needed if you require to measure 1°C change.

LM35 can also be directly connected to Arduino. The output of LM35 temperature can also be given to comparator circuit and can be used for over temperature indication or by using a simple relay can be used as a temperature controller.

Features:

  1. Calibrated directly in Degree Celsius (Centigrade)
  2. Linear at 10.0 mV/°C scale factor
  3. 0.5°C accuracy guarantee-able (at a25°C)
  4. Rated for full -55°C to a 150°C range
  5. Suitable for remote applications
  6. Low cost due to wafer-level trimming
  7. Operates from 4 to 30 volts
  8. Less than 60 mA current drain
  9. Low self-heating, 0.08°C in still air
  10. Non-linearity only 0.25°C typical
  11. Low impedance output, 0.1Ωfor 1 mA load

SPECIFICATION:

Package/Case

TO-92-3

Mounting Style

Through Hole

Sensor Type

Temperature Sensor

Output Type

Analog Voltage

Maximum Supply Voltage

30 V

Minimum Supply Voltage

4V

Operating Temperature Range

-55ºC to +150ºC

* Product Images are shown for illustrative purposes only and may differ from actual product.

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