AT42QT1110-AUR Integrated Circuits (ICs)

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The AT42QT1110-AUR is an application field and working principle capacitive touch sensor designed to reduce development time and offer reliable, cost effective operation in embedded systems. The device has a low power consumption, making it ideal for battery-powered systems, and is configured to support four buttons or sliders in various sizes, allowing the user to create a simple single-press interface or a more complex multi-stage navigation or selection sequence.

The AT42QT1110-AUR is easy to integrate into a design—simply connect two pins to the controller and two to the power/ground connections. This provides a total interface between the controller and the AT42QT1110-AUR, allowing for quick and easy system integration. The AT42QT1110-AUR support is designed to enable more sophisticated user interfaces. It is capable of detecting proximity events, which can then be routed to an external controller through a compressed digital signal.

In terms of operation, the AT42QT1110-AUR requires a voltage supply of between 2.7V and 3.6V and has a power consumption of under 30µA. It can work within a temperature range of -40°C to +85°C, so it is suitable for a wide range of embedded environments. The device works by measuring the change in capacitance due to a finger touching the sensing area. It then processes the information in real-time to determine the location of the finger, the type of touch and the duration of the touch, which is then reported back to the controller.

Although touchscreens offer a very versatile and dynamic means of user interface, there are many situations where the simplicity of traditional buttons and switches is preferred. The AT42QT1110-AUR can be used to implement touch-sensing input for a variety of system designs, including set-top boxes, mobile phones, appliances, automotive, industrial control and medical equipment. Its small size and low-power operation also make it well suited for portable devices.

The AT42QT1110-AUR is designed to provide a high degree of reliability. Its advanced touch detection algorithms helps to reduce false touches while the contact noise cancellation helps to improve the sensitivity and signal-to-noise ratio. The device incorporates ESD protection and a soft-start feature to prevent mis-calibration and reset issues. All these features combine to ensure that the devices can withstand harsh environmental conditions and user interface requirements.

The AT42QT1110-AUR is a low-cost, compact and accurate capacitive touch sensor that is easy to integrate into a system. Its advanced detection algorithms and protection features ensure reliable operation across a wide range of applications and environments. The device can be used to implement simple single-press interfaces or a more complex multi-stage control or selection sequence on a wide range of system designs.

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