描述:
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