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Features
• Number of Keys: – Comms Mode: 1 to 12 keys (1 to 9 if wheel or slider option enabled) – Standalone Mode: 1 to 5 keys
• Technology: – Patented spread-spectrum QTouchADC charge-transfer
• Number of Output Lines: – Comms Mode: Up to 10 channels can be configured as outputs (but they will replace the keys) – Standalone Mode: 1 to 5 channels can be configured as outputs
• Key Outline Sizes: – 5 mm x 5 mm or larger (panel thickness dependent)
• Key Spacings: – 6 mm or wider, center to center (panel thickness, human factors dependent)
• Key Design: – Single solid or ring shaped electrodes; widely different sizes and shapes possible
• Proximity Electrode Design: – Single solid electrodes; Key Design, Loop, PCB Trace - different sizes and shapes possible
• Wheel Size:
– Typically 30 mm –
AT42QT2120 Datasheet
