MCP4641T-104E/ST

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Digital potentiometers are devices used for converting electronic signals into an analog output. They are commonly used in data acquisition and control applications such as industrial process control and instrumentation. MCP4641T-104E/ST digital potentiometer is one of the latest potentiometers released. This technical sheet discusses the application field, working principle of the potentiometer.

Application Field

MCP4641T-104E/ST digital potentiometer is a single-channel, volatile high-precision device with a 0.1% resolution that makes it ideal for various applications. Examples of some of its major applications include:

• Voltage and current regulation in various industrial and consumer electronics
• Controlling servo motors and other motorized equipment
• Brightness and contrast control in TVs and monitors
• Calibrating sensors and transducers
• Storing calibration values in the non-volatile memory

MCP4641T-104E/ST digital potentiometers feature three terminals, ground, wiper, and reference electrode and one port for external connection. The ground and reference electrode are connected to the respective input lines, while the wiper is connected to the output line. The device can be programmed to set a wide rage of output values by either setting the reference voltage or manually adjusting the wiper with a screwdriver.

Working Principle

MCP4641T-104E/ST digital potentiometers use an electrostatic mechanism to produce a voltage proportional to the wiper position. This voltage is then converted into an analogue output voltage by a voltage-to-current converter. The converter produces a current that is proportional to the wiper position which is then applied to the output line. The output voltage is then calculated by measuring the current flowing through the resistor.

The device can be programmed to set a wide range of output voltages through the following method. First, the reference voltage is set by adjusting the reference electrode. This reference voltage can then be used to set the output voltage by adjusting the wiper with a screwdriver. As the wiper is adjusted, the output voltage is changed. Additionally, the device is equipped with an internal voltage reference that ensures an accurate output voltage even when an external reference voltage is not available.

In conclusion, the MCP4641T-104E/ST digital potentiometer is an ideal device for applications that require precise and accurate voltage regulation. With its wide range of applications and robust internal construction, this device is sure to provide a high-performance solution for many applications.

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