QT60485-AS

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QT60485-AS is a single chip touch controller in the data acquisition that integrates electrodes, direct driving circuits and a capacitive touch-sensing technology. It acts as a scalable and highly integrated touch controller line that offers noticeable benefits over similar products. Specifically, the chip offers low power, high linearity and low cost, making it the leading choice for electronic manufacturers when selecting controllers for their touch screen projects. In this article, we\'ll discuss the application field of the QT60485-AS, as well as its working principle.

Application Field

The QT60485-AS offers a range of features that make it one of the most convenient and efficient touch controllers currently available on the market. It features adjustable signal levels, current output pins, a wide operating temperature range, and low power consumption, making this a desirable chip for many different application scenarios. For starters, the chip is often used in embedded systems and PCs, such as laptops, all-in-one computers and other devices. Its ability to measure very small changes in capacitance make it ideal for such electronic components as proximity sensors, pressure sensors, and electromechanical buttons.

The chip is also highly suited to industrial touch-screens and control panels. As it offers a greater level of accuracy than most other controllers, it can also be used in medical device applications, including heart rate monitors and electronic medical record machines. Finally, this integrated controller is an attractive option for high-end automotive touch-screens and infotainment systems. It offers sufficient performance levels while still being compact enough to fit inside a car.

Working Principle

The QT60485-AS uses a combination of direct driving circuits and electrode networks to detect a change in capacitance. This works by measuring how the current flowing between two electrodes changes when a capacitive object is detected. This type of technology is more efficient than using two separate electrodes as there is no need for a separate controller unit. As the chip only requires two electrodes, it is also much smaller in size, making it practical for installation into smaller areas.

The chip is able to accurately detect the capacitance of a finger, stylus, or any other conductive object. It utilizes 16 or 32 levels of resolution, which allows it to accurately detect very small changes in electric current. This makes it ideal for many electronic applications, including medical device applications and automotive touch-screens. The chip can also be tweaked to fit specific customer needs.

To further enhance the accuracy of the chip, it uses several advanced components, such as anti-aliasing filter, differential amplifier and common-mode filter. It also uses a proportional–integral–derivative (PID) loop to adjust the output current of the controller to achieve a perfect response. With these features, the chip is capable of high accuracy and an optimized operation.

Conclusion

The QT60485-AS is an advanced and highly efficient touch controller. It is suitable for a wide range of applications, such as embedded systems and PCs, industrial touch-screens, medical devices and infotainment systems. It combines two electrodes, direct driving circuits and a capacitive sensing technology to accurately detect a wide range of capacitance changes. Using advanced components and an internal PID loop, the chip is capable of delivering a high level of accuracy and response. It is also adjustable to fit specific needs and its low power consumption makes it highly suitable for small-scale applications.

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