Analog devices provides capacitance-to-digital converter [ad7147] that allows designers to quickly and easily add responsive user controls, such as scroll wheels and touch pads, to portable electronic devices.
Some of the advantageous feature includes that this is a integrated touch controller provides highly accurate measurement and responsiveness and an active shield feature for improved noise performance. Requiring only a single pcb for full implementation, it is ideal for ultra-thin mobile electronic devices.
The analogue front-end of ad7147 yields a three-fold improvement in sensor response compared to the previous ad714x products.
