16 KEY QMatrix™ KEYPANEL SENSOR IC

The QT60161B digital charge-transfer (“QT”) QMatrix™ IC is designed to detect human touch on up 16 keys when used in conjunction with a scanned, passive X-Y matrix. It will project the keys through almost any dielectric, e.g. glass, plastic, stone, ceramic, and even wood, up to thicknesses of 5 cm or more. The touch areas are defined as simple 2-part interdigitated electrodes of conductive material, like copper or screened silver or carbon deposited on the rear of a control panel. Key sizes, shapes and placement are almost entirely arbitrary; sizes and shapes of keys can be mixed within a single panel of keys and can vary by a factor of 20:1 in surface area. The sensitivity of each key can be set individually via simple functions over the SPI or UART port, for example via Quantum’s QmBtn program, or from a host microcontroller. Key setups are stored in an onboard eeprom and do not need to be reloaded with each powerup.

● Advanced second generation QMatrix controller
● 16 touch keys through any dielectric
● 100% autocal for life - no adjustments required
● SPI Slave or Master/Slave interface to a host controller
● Parallel scan interface for electromechanical compatibility
● Keys individually adjustable for sensitivity, response time, and many other critical parameters
● Sleep mode with wake pin
● Synchronous noise suppression
● Mix and match key sizes & shapes in one panel
● Adjacent key suppression feature
● Panel thicknesses to 5 cm or more
● Low overhead communications protocol
● 44-pin TQFP package

APPLICATIONS -
● Automotive panels
● Machine tools
● ATM machines
● Touch-screens
● Appliance controls
● Outdoor keypads
● Security keypanels
● Industrial keyboards