The LM35H series are precision integrated-circuit temperature sensors, developed by Texas Instruments (TI) to provide a high level of accuracy and linearity when measuring temperature. With an ability to operate over a temperature range of -55°C to 150°C, the LM35H is particularly well-suited for high-temperature applications.

Key Features

• Calibrated Directly in Celsius: The LM35H provides a linear output that is directly proportional to the Celsius temperature, eliminating the need for additional calibration to interpret the readings.
• Low Operating Voltage: It operates effectively at voltages from 4V to 30V, making it versatile for various circuits and applications.
• Low Current Draw: This sensor draws a minimal amount of current, typically 60 µA, which helps in energy-sensitive systems by reducing the overall power consumption.
• High Accuracy: The LM35H offers impressive accuracy levels, with typical deviations of ±0.4°C at room temperature and ±0.8°C over the full -55°C to 150°C temperature range.
• Non-Linearity: Exhibits a near-zero non-linearity of ±0.1°C within the range, simplifying temperature-to-voltage conversion.

Applications

The LM35H temperature sensor is widely used in a variety of applications due to its robustness and precision. It is ideal for:

• Environmental controls
• Power supplies
• HVAC systems
• Battery management systems
• Automotive electronics
• Temperature monitoring systems within industrial equipment

Advantages

Compared to other temperature sensors, the LM35H does not require any external calibration to provide typical accuracies. Its low output impedance, linear output, and precise inherent calibration make it easy to interface with readout or control circuitry. Moreover, the sensor's low power consumption makes it an excellent choice for battery-powered applications.

Overall, the LM35H from Texas Instruments stands out as a reliable and cost-effective solution for temperature sensing needs, providing high precision and ease of use in a wide array of high-temperature environments.