STS21 Sensors, Transducers

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The STS21 Family of Temperature Sensors are designed to measure temperature ranges from -45°C to 125°C and outputs either digital or analog signals in response to the sensed temperature.

The range of the STS21 is customizable to meet the needs of various applications. The STS21 is available in two versions, one with a 4-20mA analog output and the other with a 10-bit digital output. The device has a low output resistance of 500Ω, making it easy to integrate into an existing system. The STS21 is controlled using a 4-wire interface with a bidirectional signal. This feature allows for calibration, temperature reading, and status information all to be transmitted through a single signal.

The working principle for the STS21 family of temperature sensors is based on a thermistor. A thermistor is an electronic device that displays a resistance to electric current that changes in relation to the ambient temperature. This means that the resistance measured by the thermistor is directly proportional to the temperature being measured.

The STS21 includes a one-wire serial control interface that allows for the temperature to be read from and adjusted for accuracy. The device also includes a non-volatile memory for storing calibration data, as well as two 8-bit registers for calibration. By using these registers, the device can accurately measure temperatures in both the Celsius and Fahrenheit scales.

The STS21 also includes an adjustable microcontroller, allowing for user-defined settings. This is beneficial in applications that require the ability to adjust the operating parameters of the device without having to open it up and make physical adjustments.

The STS21 is ideal for applications where temperature measurement is required, such as in consumer applications, medical devices, air conditioning systems, industrial automation and building safety systems. The device offers both accuracy and versatility, making it an ideal choice for any application.

In conclusion, the STS21 is a highly reliable and accurate temperature sensing device that can output either digital or analog signals based on the temperature being sensed. The device features a comprehensive range of features, including calibration registers, a one-wire serial control interface, and adjustable microcontroller, making it ideal for a variety of applications. With its robust design and exceptional performance, the STS21 is a great choice for any temperature sensing application.

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