MICROCHIP QT60160-ISG

These devices are designed for low cost mobile and consumer electronics applications. QT60xx0 devices are digital burst mode charge - transfer (QT) sensors designed specifically for matrix layout touch controls; they include all signal processing functions necessary to provide stable sensing under a wide variety of changing conditions. Only a few external parts are required for operation. The entire circuit can be built within a few square centimeters of single - sided PCB area. CEM - 1 and FR1 punched, single - sided materials can be used for the lowest possible cost. The PCB's rear can be mounted flush on the back of a glass or plastic panel using a conventional adhesive, such as 3M VHB two - sided adhesive acrylic film. QT60xx0 devices employ transverse charge - transfer (QT') sensing, a technology that senses changes in electrical charge forced across two electrode elements by a pulse edge. QT60xx0 devices allow a wide range of key sizes and shapes to be mixed together in a single touch panel. The devices use an I²C interface to allow key data to be extracted and to permit individual key parameter setup. The command structure is designed to minimize the amount of data traffic while maximizing the amount of information conveyed.

• Number of keys: 1 to 16 (QT60160), or 1 to 24 (QT60240)
• Technology: Patented spread - spectrum charge - transfer (transverse mode)
• Key outline sizes: 6mm x 6mm or larger (panel thickness dependent); widely different sizes and shapes possible
• Key spacings: 8mm or wider, center to center (panel thickness dependent)
• Electrode design: Two - part electrode shapes (drive - receive); wide variety of possible layouts
• Layers required: One layer (with jumpers), two layers (no jumpers)
• Electrode materials: PCB, FPCB, silver or carbon on film, ITO on film, Orgacon ink on film
• Panel materials: Plastic, glass, composites, painted surfaces (low particle density metallic paints possible)
• Adjacent Metal: Compatible with grounded metal immediately next to keys
• Panel thickness: Up to 50mm glass, 20mm plastic (key size dependent)
• Key sensitivity: Individually settable via simple commands over serial interface
• Interface: I²C slave mode (100kHz), or parallel output via external shift registers
• Moisture tolerance: Best in class.
• Power: 1.8V ~ 5.5V, 40µA (16 keys at 1.8V, 2s Low Power mode). Guaranteed to 1.62V
• Package: 32 - pin 5 x 5mm MLF RoHS compliant
• Signal processing: Self - calibration, auto drift compensation, noise filtering, Adjacent Key Suppression

• Mobile phones
• Remote controls
• Domestic appliances
• PC peripherals
• Automotive