The LM50CIM3 from Texas Instruments is an exceptional precision integrated-circuit temperature sensor.

• Output: Output voltage linearly proportional to the Celsius (Centigrade) temperature
• Temperature Range: -55°C to +130°C
• Accuracy: ±2.0°C @ room temperature, and ±3.0°C over the full -55°C to +130°C temperature range
• Calibration: Does not require an external calibration
• Scale Factor: Provides a 10mV/°C scale factor
• Operating Voltage: Operates over a 2.7V to 10V range
• Output Impedance: Low-output impedance, linear output, and precise inherent calibration
• Package: Space-saving SOT-23 surface-mount package
• Self-Heating: Very low self-heating effect, less than 0.1°C in still air
• Supply Current: Low supply current of 130µA (max)