The paper describes advances in
touch-sensor technology for an increasingly broad range of markets and
applications, and explains how sensor-driven interfaces are becoming more
intuitive, and easier to implement and to use.


The backgrounder reviews the capacitive technologies used in touch-sensor
controllers, and discusses the choices available for optimizing results in
various applications. The paper, which focuses specifically on the benefits of
all-digital touch technology, details the differences between analog and
digital touch solutions, discusses different sensing applications, and
analyzes general industry trends. A comprehensive section details how digital
touch-sensor ICs can be integrated with a wide range of microcontrollers to
deliver an efficient, low-power embedded solution.


Specific characteristics of the Fujitsu FMA1127 touch-sensor controller,
which can optimize user interfaces for everything from mobile entertainment
devices to white goods, are discussed.


“This new backgrounder serves as a useful reference for designers who
want to use touch-sensor technology to replace buttons and other mechanical
devices in mobile products, home appliances and other applications,” said Dean
Chang, senior product marketing manager at Fujitsu Microelectronics. “We have
identified the ways in which digital touch sensor technology can be configured
to deliver the optimal user experience.”