AD8403AR1-REEL

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Data acquisition often refers to the obtaining of data from any type of sensor, and can involve a wide variety of technology. Digital potentiometers are a specific type of data acquisition utilized to measure resistance in electrical circuits. Of these, the AD8403AR1-REEL has become a popular option for its small size and improved accuracy. This article looks at the application field and working principle of this potentiometer.

The AD8403AR1-REEL is well suited to a wide range of data acquisition applications, especially those which need accurate resistance measurement. It is commonly used in industrial process control, where the resolution and speed of operation are important parameters. It is also ideal for applications such as pressure and temperature sensing, where the reliability of the device is a major consideration.

The AD8403AR1-REEL is a dual digital potentiometer. This means that it has two channels which measure completely independent resistance values. Each channel has its own access terminal and is accompanied by a reference voltage terminal. The resistance values can be adjusted by using the resistor ends to communicate between the access and reference terminals.

The working principle of the AD8403AR1-REEL is simple. In each channel, one side of the resistor is connected to the access terminal and the other side to the reference terminal. When a voltage is applied to either of the access terminals, current flows through the resistor, producing a voltage drop across the resistor that is proportional to the resistance value. This voltage drop is then measured by the potometer\'s converter and its output is converted into a numerical value which is displayed on the potometer\'s indicator.

To adjust the sensitivity of the AD8403AR1-REEL, the maximum resistance value of each channel must be specified before operation. This can be done by connecting one end of the resistor to a supply voltage, while the other end is connected to the reference voltage terminal. The resulting voltage drop across the resistor will be used to determine the maximum resistance value for that channel.

Once the sensitivity is set, the voltages applied to each access terminal can be adjusted to measure a specific value of resistance. This is done by adjusting the voltages applied to each access terminal until the desired resistance values are achieved. It is important to note that the maximum resistance of each channel cannot be exceeded, so care must be taken when setting the sensitivity.

The AD8403AR1-REEL is highly accurate and offers a wide range of operation. It is ideal for those applications which need accurate and reliable resistance measurement over a wide range of conditions. As such, it has become a popular choice for industrial process control and other data acquisition applications.

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