LM35H

The LM35H is a precision temperature sensor manufactured by Texas Instruments. It is designed to provide an accurate and linear output voltage that is directly proportional to the temperature in degrees Celsius. The device is particularly notable for its ease of use and high accuracy, making it a popular choice in various applications, including industrial, automotive, and consumer electronics.

Key Features:

1. Temperature Range: The LM35H can measure temperatures from -55°C to +150°C, making it suitable for a wide range of environments and applications.

2. Output Voltage: The sensor outputs a voltage of 10 mV per degree Celsius. For example, at 25°C, the output voltage would be 250 mV. This linear relationship simplifies the interfacing with analog-to-digital converters (ADCs) and microcontrollers.

3. Accuracy: The LM35H boasts a typical accuracy of ±0.5°C at room temperature, which can be critical in applications requiring precise temperature measurements.

4. Low Self-Heating: The device has a low self-heating characteristic, which means it does not significantly affect the temperature of the environment it is measuring. This feature is essential for accurate readings, especially in sensitive applications.

5. Package Options: The LM35H is available in various package types, including TO-46 metal can and surface-mount options, allowing for flexibility in design and integration into different systems.

6. Power Supply: It operates on a wide supply voltage range, typically from 4V to 30V, which provides versatility in various circuit designs.

7. Temperature Coefficient: The temperature coefficient of the LM35H is typically 0.01 V/°C, ensuring a consistent and predictable output across its operating range.

Applications:

The LM35H is widely used in applications such as:

• Environmental Monitoring: For measuring ambient temperature in weather stations and HVAC systems.
• Industrial Process Control: In systems that require precise temperature regulation and monitoring.
• Consumer Electronics: In devices like thermostats and temperature-controlled appliances.
• Automotive: For monitoring engine temperatures and cabin climate control.

Conclusion:

The LM35H from Texas Instruments is a robust and reliable temperature sensor that offers high accuracy, a wide temperature range, and ease of integration into various electronic systems. Its linear output and low self-heating characteristics make it an ideal choice for applications where precise temperature measurement is critical.