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LM35 is one of the most widely used temperature sensor.
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Operates at 5V , it draws less current ( 60 µA).
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It is more accurate & linear than thermistor.
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It produces 10mV per °C.
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It doesn’t require any external calibrator & operates within -55°C to 150°C.
Operating principle:
Operating principle is similar to that of RTD, where resistance of material changes with temperature .
Advantages:
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No calibration required, directly calibrated in terms of °C.
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Low power consumption.
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Low cost.
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Easy interface with µ-contoller/processor.
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Good accuracy and good resolution.
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Linear.
Disadvantages:
- Low operating temperature.
Applications:
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As sensor in room temperature controller.
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Machine temperature sensors.
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Battery temperature monitoring.
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Electronic board temperature measurement.