LM71CISD

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Temperature sensing is an integral part of any application in which precision monitoring of temperature is required. The LM71CISD temperature sensor device is one of a family of sensors that offers application-specific signal conditioning with an analog and digital output. This sensor has a wide range of use cases, making it a versatile choice for many tasks.

Overview

The LM71CISD is a precision integrated temperature sensor designed for use in a variety of applications. It is packaged in a miniature 6-pin SOT-23 package and features an internal signal conditioning circuit that provides a linearized temperature independent output. This sensor operates from a 2.7V to 5.5V supply and draws only 550μA of current. The device has an integrated thermal diode with an accuracy of ±1°C, providing precise temperature measurements in a variety of applications. An on-chip temperature compensation circuitry ensures flexibility for different operating conditions. The LM71CISD is recommended for use in consumer, automotive, industrial, medical and applications.

Features and Benefits

• High accuracy of ±1°C
• Wide range of operating voltage from 2.7V to 5.5V
• Low current consumption of only 550μA
• Integrated thermal diode
• Built-in temperature compensation circuitry
• 6-pin SOT-23 package

Application Field

The LM71CISD is an excellent choice for high precision temperature measurement applications. It is perfect for use in a wide range of applications including consumer, automotive, industrial, medical, and others. The device is particularly well-suited for applications where temperature accuracy is essential such as:

• Computer and server temperature monitoring.
• Cooling, heating, and ventilation systems.
• Temperature control circuits in domestic appliances.
• Temperature monitoring and controllers in medical applications.
• Temperature controllers for industrial machines and processes.
• Temperature sensors for automotive and aviation.

Working Principle

The LM71CISD utilizes an integrated thermal diode to measure temperature. The internal signal conditioning circuitry provides a linearized output voltage that is a precise indication of temperature as measured by the thermal diode. The device also features an integrated temperature compensation circuit that is used to calibrate the output to ensure accuracy over a wide temperature range.

The output voltage of the LM71CISD is directly proportional to temperature and can be monitored using a microcontroller. The microcontroller can read the output of the sensor and convert the voltage to a temperature value using the linearizing equation. The LM71CISD also offers a digitally accessible output via an I2C/SMBus interface for easy integration into systems that require a digital output.

Conclusion

The LM71CISD temperature sensor device is a versatile and accurate temperature sensing solution for a variety of applications. Its small size, low power requirements, and linearized analog and digital output make it an ideal choice for temperature sensing applications where precise temperature readings are required.

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