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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