AT42QT2160

Integrated Touch and Slide Control Panel IC for use in mobile devices

The QT2160 implements 16 touch channels and a slider (using 2 to 8 channels) as well as LED control, IO expansion and a 2-wire serial interface, compatible to the industry standard I²C bus. The IC is ideal for use as a small control panel processor in battery driven consumer devices such as mobile phones, personal media players, PDAs, digital picture frames and other mobile appliances. It is based on Atmel's QMatrix™ and QSlide™ technologies, has very low power requirements and provides a very wide range of host programmable input/output configurations.

Typical Applications

With its low power, low voltage attributes, this fully integrated device can be used in many different ways and is a good choice if, for example, you need to provide a media interface or special function keys in personal media players, PDAs, laptop keyboards or other hand-held consumer devices. Running at a Voltage range up to 5.5V, the QT2160 can also be used in mains driven applications, such as TV sets or audio and video equipment.

Long Touch Sliders Made Simple

The QT2160 provides a way of integrating a slider into your product at very low cost. The sensing elements can be made from almost any conductive material and can be integrated into the casing of the product in many novel ways. They can be made much longer than a conventional slider mechanism, can provide a better user experience and, with no moving parts, have the potential for much greater reliability.

Easy, Low Cost Implementation

The IC is supplied in a 28-pin 4mm x 4mm RoHS compliant package and requires only a small number of additional components for a practical circuit.

Input/Output Options

For such a small device, the QT2160 provides you with an exceptional number of options for interfacing with external devices. When configured as inputs, the interface lines can be connected to mechanical switches or logic signals. You can use them to provide control inputs, or to provide a multi-input host wake-up function. Or you can configure them as PWM capable outputs and use them to provide key illumination and visual feedback with touch related PWM control of LED indicators. The 3 I/O pins and 8 shared output pins provide you with many other interesting possibilities when they are used in combination.

The application shown is typical – an audio control keyboard with built-in LED indicators to provide visual feedback to the user.

EVK2160A evaluation kit

The EVK2160A allows the user to evaluate all functions of the QT2160 touch sense controller. The kit provides a convenient reference design and allows the user to visualize discrete touch buttons or a touch slider LED control. The EVK2160A works stand-alone but can also be connected to a PC. The device comes fully assembled, tested and documented.

Ordering Information

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