LM35 Regulator Features:

• Minimum and Maximum Input Voltage is 35V and -2V respectively. Typically 5V.
• Can measure temperature ranging from -55°C to 150°C 
• Output voltage is directly proportional (Linear) to temperature (i.e.) there will be a rise of 10mV (0.01V) for every 1°C rise in temperature.
• ±0.5°C  Accuracy
• Drain current is less than 60uA  
• Low cost temperature sensor
• Small and hence suitable for remote applications
• Available in TO-92, TO-220, TO-CAN and SOIC package

How to use LM35 Temperature Sensor:

LM35 is a precession Integrated circuit Temperature sensor, whose output voltage varies, based on the temperature around it. It is a small and cheap IC which can be used to measure temperature anywhere between -55°C to 150°C. It can easily be interfaced with any Microcontroller that has ADC function or any development platform like Arduino.

Power the IC by applying a regulated voltage like +5V (V_S) to the input pin and connected the ground pin to the ground of the circuit. Now, you can measure the temperate in form of voltage as shown below.