LM35 Temperature Sensor

Description

The LM35 is a precision integrated-circuit temperature sensor that outputs a linear analog voltage directly proportional to the temperature in degrees Celsius. It requires no external calibration, provides a scale factor of \(10 \text{ mV}/^\circ\text{C}\), and measures temperatures between \(-55^{\circ }\text{C}\) and \(150^{\circ }\text{C}\). [1, 2, 3]

Key Features

• Linear Output: \(10 \text{ mV}\) output change per \(1^{\circ }\text{C}\) rise in temperature (e.g., \(250 \text{ mV} = 25^\circ\text{C}\)).
• Accuracy: Typically \(\pm 0.5^{\circ }\text{C}\) at room temperature.
• Low Power: Operates on \(4 \text{ V}\) to \(30 \text{ V}\) and draws less than \(60 \mu\text{A}\).
• Easy Interfacing: Connects seamlessly to microcontrollers (like Arduino) via analog-to-digital converters (ADC) without requiring extra signal conditioning. [1, 2, 3, 4]

You can read more about its specifications and technical implementation in the Texas Instruments LM35 Datasheet. [1]

If you are working on a project, let me know:

• What microcontroller are you using (e.g., Arduino, Raspberry Pi, ESP32)?
• Do you need code examples for reading the sensor?

I can help you write the script or calculate the correct voltage-to-temperature conversion formulas for your setup. [1, 2]