AT42QT2100

Atmel AT42QT2100 QTouch Touch Sensor IC DATASHEET Features Number of QTouch® Keys: – 0 to 7, one slider or one wheel Technology: – Patented spread-spectrum charge-transfer Key Outline Sizes: – 5 mm x 5 mm or larger (panel thickness dependent); widely different sizes and shapes possible Key Spacing: – 6 mm or wider, center to center (panel thickness, human factors dependent) Key Design: – Single solid or ring shaped electrodes; wide variety of possible layouts Wheel Size: – Typically 30 – 50 mm diameter, resistively interpolated wheel up to 80 mm diameter, typical width 12 mm Slider Size: – Typically 50 – 100 mm length, typical width 12 mm Slider/Wheel Electrode Design: – Choice of spatially interpolated (resistorless) or resistively interpolated design – Slider can be an arc or other irregular shape Layers Required: – One layer substrate; electrodes and components can be on same side Substrates: – FR-4, low cost CEM-1 or FR-2 PCB materials; polyamide FPCB; PET films, glass Electrode Materials: – Copper, silver, carbon, ITO, virtually anything electrically conductive Panel materials: – Plastic, glass, composites, painted surfaces (nonconductive paints) Adjacent Metal: – Compatible with grounded metal immediately next to keys Panel Thickness: – For keys, up to 15 mm glass, 10 mm plastic (key size dependent) – For slider/wheel, up to 4 mm glass, 3 mm plastic Key Sensitivity: – Adjustable via change in sampling capacitor (Cs) value 9554E–AT42–01/13 ...