MAX5528GTA+T

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The MAX5528GTA+T is a monolithic digital potentiometer designed for low-cost and space-saving applications, most prominent of which is Data Acquisition. It is a ten-tap device with a linear or logarithmic characteristics, available in tiny SC70, SOT23-5, and MSOP-8 packages. With its 20ppm/°C temperature coefficient, access voltage range of up to 6V, supply voltage up to 8V, and standby current of just 40µA, this device offers an attractive alternative to more expensive multiple-device solutions.

Another area where the MAX5528GTA+T excels is in its applications in digitally controlled potentiometers. It provides up to 10 discrete tap points, enabling simple and accurate control over diverse adjustable circuits, such as multi-tap transformer control and adjustable voltage regulator applications. Additionally, it can be employed in audio applications, like volume and tone controls, as well as other consumer electronics applications.

The MAX5528GTA+T\'s exceptional performance is largely the result of its working principle. At the core of the device is the potentiometer element, which is a conductive track onto which a pair of terminals, called “sliders”, are connected. By using digital control signals, the resistance between the two terminals can be adjusted in a linear or logarithmic fashion, depending on the type selected. In addition, the same digital control signals can be used to read the slider position, allowing for detection of out-of-range or open circuit conditions.

The MAX5528GTA+T employs a combination of CMOS, electrode, and polysilicon technology to create a reliable, low-impedance resistance element that is free of contact oxidation, which allows for long term stability, even with continuous exposure to vibration, mechanical shock, and temperature changes. Additionally, the device is tested to withstand supply voltage shorts, providing a measure of protection against accidental contact with other conductive elements.

Overall, the MAX5528GTA+T serves as an excellent choice for data acquisition applications as well as digitally controlled potentiometers. Its low-cost and space-saving design, relatively high resistance to wear and tear, and resistance to shorts or accidental contact make it a suitable device for all kinds of applications ranging from consumer electronics to industrial automation.

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