DS1721U+T&R

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Temperature is an important physical quantity that has an impact on our daily lives and activities. To ensure accurate and controlled temperature measurement, temperature sensors are necessary. Temperature sensors are classified into two major categories, namely analog and digital output. This article discusses the application field and working principle of DS1721U+T&R, a digital temperature sensor.

DS1721U+T&R is a low-cost, high-performance, digital temperature-to-voltage converter. It utilizes dual-slope thermal and electrical sensing technology to measure temperature accurately and over a wide temperature range, making it suitable for a variety of applications. DS1721U+T&R includes a 10-bit A/D converter, a dual-slope 13-bit temperature-to-voltage converter, and a programmable range selector.

The application field of DS1721U+T&R includes monitoring and adjusting industrial processes, temperature control in aeronautics and aerospace, and temperature management in medical systems. It is also used in chemical reaction monitoring, remote transmitters, home security and temperature sensing systems, and many other industries. Furthermore, the device converts temperatures to digital codes so that the measured temperature can be monitored and recorded with logging instruments.

The working principle of DS1721U+T&R is based on dual-slope thermal and electrical sensing technology. The device consists of two parts: the temperature converter and the A/D converter. The temperature converter uses an input voltage to measure the temperature across two perpendicular surfaces. This voltage is then compared with two reference voltages to determine the temperature. Once the temperature has been determined, the A/D converter then converts the temperature into a digital code.

The temperature converter uses two voltage levels to convert temperatures. The upper voltage represents the highest temperature that can be measured, while the lower voltage represents the lowest temperature. The temperature converter then determines the temperature by comparing the voltage level with these two reference voltages. When the voltage level falls between the upper and lower limits, the temperature converter reads the temperature accurately.

The A/D converter then converts the measured temperature into a 10-bit digital code. The range selector is then used to adjust the measured temperature range. This range selector is programmed to measure temperatures from a range of negative fifty degrees centigrade to positive 125 degrees centigrade. This ensures that accurate temperature measurements are made across a wide temperature range.

In summary, DS1721U+T&R is a digital temperature sensor that utilizes dual-slope thermal and electrical sensing technology to measure temperature accurately and over a wide temperature range. It is applicable in a variety of industries including monitoring and adjusting industrial processes, temperature control in aeronautics and aerospace, and temperature management in medical systems. The device also includes a 10-bit A/D converter, a dual-slope 13-bit temperature-to-voltage converter, and a programmable range selector providing accurate temperature measurements across a wide temperature range.

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