The LM35 is a temperature sensor integrated circuit that outputs an analog voltage proportional to the temperature it senses. With its compact and versatile design, it has become a popular choice for various temperature measurement applications. The LM35 features three pins, which provide easy access to its functionality. Pin 1 is the VCC pin, which is connected to the positive supply rail. Pin 2 is the output pin, which delivers an analog voltage proportional to the temperature being measured. Finally, pin 3 is the ground pin, which is connected to the negative supply rail. One of the key advantages of the LM35 is its wide temperature range, which allows it to be used in both low-temperature and high-temperature applications. Additionally, it offers high accuracy and linearity, making it suitable for precise temperature measurement requirements. The small size of the LM35, along with its low power consumption, makes it ideal for use in portable and battery-operated devices. It can be easily interfaced with microcontrollers and other digital systems, providing temperature data for various control and monitoring applications. Overall, the LM35 is a reliable and versatile temperature sensor that offers accurate and precise temperature measurement capabilities in a compact and easy-to-use package.