STMicroelectronics LM335DT Precision Temperature Sensor

The LM335DT is a precision temperature sensor manufactured by STMicroelectronics that provides a direct Celsius temperature measurement. This analog sensor is part of the LMx35 series, which is known for its ease of use, accuracy, and low cost. The device operates as a two-terminal zener and has a breakdown voltage directly proportional to absolute temperature at 10mV/°K. With its wide operating temperature range and stable output, the LM335DT is an ideal choice for a variety of temperature sensing applications.

Key Features:

• Direct Celsius Scaling: The output voltage of the LM335DT is directly proportional to the temperature in Kelvin, allowing for easy conversion to Celsius with simple arithmetic. This feature simplifies the integration of the sensor into systems that require temperature data in Celsius.
• Calibrated Directly in Kelvin: The LM335DT comes calibrated with a typical error of ±1°C at room temperature and ±3°C over a full −40 to +100°C temperature range. This calibration ensures accurate readings without the need for additional calibration in most applications.
• Wide Operating Voltage Range: The sensor can be powered with a supply voltage between 4V and 30V, making it versatile for use in various circuits without the need for complex power supply arrangements.
• Low Impedance Output: The LM335DT offers a low impedance output, which improves performance and reduces errors due to load conditions.
• Operational Range: It has an operational temperature range from -40°C to +100°C, allowing it to be used in environments with a wide range of temperatures.
• TO-220 Package: The sensor is available in a TO-220 package, which is suitable for standard PCB mounting and provides good thermal conduction paths for heat dissipation.

Applications:

The LM335DT is suitable for a diverse range of applications, including:

• Temperature monitoring in consumer electronics
• Industrial temperature control systems
• Environmental monitoring
• Automotive systems
• Data logging and temperature compensation circuits

With its straightforward interface and accurate temperature measurement, the LM335DT from STMicroelectronics is a reliable choice for designers and engineers who require a dependable and cost-effective temperature sensing solution.