Texas Instruments LM35 Precision Temperature Sensor IC, SOIC-8, 0°C to 100°C

The Texas Instruments LM35DM/NOPB is a precision integrated-circuit temperature sensor providing an output voltage that is linearly proportional to the Celsius temperature. It eliminates the need for subtracting a large constant voltage from the output, a common requirement with sensors calibrated in Kelvin, offering a more convenient and straightforward scaling directly in degrees Celsius.

This sensor delivers high accuracy without requiring any external calibration or trimming. It provides typical accuracies of ±1/4°C at room temperature and ±3/4°C over a full -55°C to 150°C range. With its low-output impedance and linear output, interfacing with readout or control circuitry is exceptionally simple.

The device operates with single power supplies or with plus and minus supplies. It draws only 60μA from the supply, resulting in very low self-heating of less than 0.1°C in still air, ensuring minimal impact on measurement accuracy. Key features include a calibrated scale factor of 10mV/°C, low non-linearity, and a robust 0.1Ω low-impedance output suitable for driving loads up to 1mA.

Constructed as a green product with no antimony or bromine (Sb/Br), it meets stringent environmental standards and carries a military rating, making it suitable for the most demanding applications. Its combination of precision, low power consumption, and ease of use makes it an ideal choice for a wide array of temperature sensing needs.