LM335 Temperature Sensor

LM335 Temperature Sensor 

The LM335 is a precision analog temperature sensor that operates like a temperature-dependent Zener diode, with an output voltage linearly proportional to absolute temperature (in Kelvin). It provides 10 mV per Kelvin (10 mV/K), making it easy to measure temperature using simple analog or ADC circuits.

The LM335 is factory calibrated and can be easily adjusted with a single external resistor for higher accuracy. It is widely used in temperature measurement, compensation, and control circuits, as well as in weather stations, laboratory instruments, and industrial electronics.

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Applications

• Microcontroller and ADC-based temperature measurement
• Temperature monitoring and control systems
• Weather stations and environmental monitoring
• Power supply temperature compensation
• Battery chargers and thermal protection circuits
• Industrial instrumentation and laboratory equipment

Features

• Type: Precision analog temperature sensor
• Output scale: 10 mV per Kelvin (10 mV/K)
• Operates like a temperature-dependent Zener reference
• High accuracy and good linearity
• Can be calibrated with one external resistor
• Low self-heating
• Low cost and easy to use
• Simple 3-pin interface
• Package options: TO-92 / TO-46 (depending on variant)