The QT113 charge-transfer (“QT’”) touch sensor is a self-contained digital IC capable of detecting near-proximity or touch. It will project a proximity sense field through air, via almost any dielectric, like glass, plastic, stone, ceramic, and most kinds of wood. It can also turn small metal-bearing objects into intrinsic sensors, making them responsive to proximity or touch. This capability coupled with its ability to self calibrate continuously can lead to entirely new product concepts. • Projects a proximity field through air • Less expensive than many mechanical switches • Sensitivity easily adjusted via capacitor value • Turns small objects into intrinsic touch sensors • 100% autocal for life - no adjustments required • 2.5 to 5V, 600µA single supply operation • Toggle mode for on/off control (strap option) • 10s, 60s, infinite auto-recal timeout (strap options) • Gain settings in 2 discrete levels • HeartBeat™ health indicator on output • Active-low (QT113) or active-high outputs (QT113H) • Only one external part required - a 1¢ capacitor APPLICATIONS - • Elevator buttons • Toys & games • Access systems • Pointing devices • Appliance control • Security systems • Light switches • Prox sensors
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