STMicroelectronics LM135Z

of LM135Z The LM135Z is a precision temperature sensor. It is designed for a variety of applications that require accurate temperature measurement. The device outputs a voltage proportional to the temperature in degrees Kelvin, making it easy to interface with analog circuits. Its precision and low drift make it suitable for use in medical, automotive, and industrial applications. Functions - Temperature Measurement: Provides a linear output voltage that is a function of the temperature. - Temperature Range: Operates typically over a temperature range of -40°C to +100°C with a maximum of +125°C. - Voltage Output: Output voltage is typically 10 mV/°K, which translates to 10 mV for each Kelvin increase in temperature. - High Accuracy: Offers high accuracy with minimal drift over time and temperature. Applications - Industrial Temperature Sensing: Used in manufacturing and process control systems. - Medical Equipment: Suitable for temperature monitoring in diagnostic and therapeutic devices. - HVAC Systems: Utilized for environmental controls in heating, ventilation, and air conditioning systems. - Consumer Electronics: Used in devices that require temperature measurements to ensure optimal performance. Alternative Parts If you're looking for alternatives to the LM135Z, here are some other temperature sensors you might consider: - LM34: A temperature sensor with a voltage output proportional to Fahrenheit temperatures. - LM75: A digital temperature sensor with I2C interface, suitable for digital applications. - TMP36: An analog temperature sensor that outputs a voltage proportional to the Celsius temperature. Embedded Modules While the LM135Z itself is an integrated circuit, you may find embedded modules that incorporate similar temperature sensing capabilities. Look for modules that use: - I2C or SPI Communication: These might include temperature sensors with built-in digital interfaces. - Similar Analog Temperature Sensors: Some breakout boards feature LM34 or TMP36 with associated circuitry for easier integration. Related Q&A 1. Q: What is the output voltage of the LM135Z at 25°C? A: At 25°C, the LM135Z outputs 250 mV because it produces 10 mV per degree Kelvin, and 25°C corresponds to approximately 298 K. 2. Q: Can the LM135Z be used in a digital circuit? A: The LM135Z outputs an analog voltage. To use it in a digital circuit, you can connect it to an ADC (Analog-to-Digital Converter) to convert the voltage output into a digital signal. 3. Q: What are the main advantages of using LM135Z over a thermistor? A: The main advantages of the LM135Z include its linear voltage output, high accuracy, lower drift, and simple interfacing compared to thermistors, which may require more complex signal conditioning. 4. Q: Is the LM135Z suitable for automotive applications? A: Yes, the LM135Z is suitable for automotive applications due to its wide temperature range and high precision, making it appropriate for monitoring engine temperatures and environmental conditions. 5. Q: How should I mount the LM135Z for optimal performance? A: For optimal performance, the LM135Z should be mounted in a manner that ensures good thermal contact with the medium being measured, minimizes thermal lag, and avoids exposure to direct sunlight or drafts that can skew measurements.