LM20BI MDC

Series:	--
Part Status:	Obsolete
Sensor Type:	Analog, Local
Sensing Temperature - Local:	-55°C ~ 130°C
Sensing Temperature - Remote:	--
Output Type:	Analog Voltage
Voltage - Supply:	2.4 V ~ 5.5 V
Resolution:	11.77mV/°C
Features:	Shutdown Mode
Accuracy - Highest (Lowest):	±1.5°C (±2.5°C)
Test Condition:	25°C ~ 30°C (-55°C ~ 130°C)
Operating Temperature:	-55°C ~ 130°C
Mounting Type:	Surface Mount
Package / Case:	Die
Supplier Device Package:	--

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Introduction

Temperature sensors are used to measure temperature and output the readings in the form of analog and digital output signals. The LM20BI MDC application field and working principle is an advanced and reliable temperature sensor technology that is used in various applications.

Application Fields

The LM20BI temperatures sensing technology has wide applications in industrial, automotive, consumer and commercial applications. The following are some of the key applications where the sensor can be used:

• Automotive - engine cooling and temperature sensing and monitoring in air-conditioners, transmission systems, engines and headlights.
• Industrial - temperature sensing for industrial control, industrial processes, industrial heaters, chemical processes and refrigeration.
• Consumer and commercial - temperature sensing for food and beverage packaging, monitoring ovens, fryers, microwave ovens, commercial buildings, homes and other consumer and commercial applications.

Working Principle

The temperature sensor works on the principle of resistance to temperature. The sensor consists of a stainless steel casing, a positive temperature coefficient (PTC) thermistor, a negative temperature coefficient (NTC) thermistor, and an analog or digital output.The sensing element in the temperature sensor is the PTC thermistor. This is an electrical resistor which is made from ceramic materials with a high resistance to temperature. When the temperature rises, the PTC thermistor’s resistance increases in direct proportion to the temperature. This will cause a change in the output voltage from the sensor. The NTC thermistor works on a similar principle and operates inversely to the PTC thermistor. When the temperature drops, the NTC thermistor’s resistance increases in an inverse proportion to the decrease in temperature. This will also cause a change in the output voltage from the sensor. The LM20BI sensor will generate an analog or digital output depending on the application. The analog output is usually in the form of voltage or current depending on the type of sensor used. The digital output is usually in the form of digital signals which are processed by the micro controller of the system.

Conclusion

The LM20BI is an advanced, reliable and accurate temperature sensors designed for use in a wide range of applications. It implements the principles of resistance to temperature to measure temperature and output analog or digital signals based on the application. It is used in automotive, industrial, consumer and commercial applications and provides high performance and reliable results.

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