LM35 Temperature Sensor

LM35 is a temperature measuring device having an analog output voltage proportional to the temperature.It provides output voltage in Centigrade (Celsius). It does not require any external calibration circuitry.The sensitivity of LM35 is 10 mV/degree Celsius. As temperature increases, output voltage also increases.It is a 3-terminal sensor used to measure surrounding temperature ranging from -55 °C to 150 °C.LM35 gives temperature output which is more precise than thermistor output. 
LM35 Temperature Sensor Pinout:

• VCC: Supply Voltage (4V – 30V)
• Out: It gives analog output voltage which is proportional to the temperature (in degree Celsius).
• GND: Ground 

Specification of LM35 Temperature Sensor:

• Operating Voltage: 4 V to 30 V
• Output Voltage: 10mV/°C
• Sensitivity: 10mV/°C
• Linearity Error: ±1°C (for 0°C to +100°C)
• Operating Temperature: -55°C to +150°C
• Output Impedance: 100 Ω
• Power Consumption: 60 μA (typical)
• Package Type: TO-92, TO-220, SOIC
• Output Type: Analog
• Accuracy: ±1°C (typical)

Alternate options for LM35 Sensor:

• TMP36
• DHT11
• DS18B20
• LM34
• RTD PT100