QT113H Datasheet | QUANTUM

QProx™ QT113 / QT113H CHARGE-TRANSFER TOUCH SENSOR ! 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 ! Heart Beat™ health indicator on output ! Active-low (QT113) or active-high outputs (QT113H) ! Only one external part required - a 1¢ capacitor Vdd O ut O pt1 O pt2 QT113 Vss Sn s2 Sn s1 Gain APPLICATIONS - ! Light switches ! Prox sensors ! Appliance control ! Security systems ! Access systems ! Pointing devices ! Elevator buttons ! Toys & games 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. It is designed specifically for human interfaces, like control panels, appliances, toys, lighting controls, or anywhere a mechanical switch or button may be found; it may also be used for some material sensing and control applications provided that the presence duration of objects does not exceed the recalibration timeout interval. The QT113 requires only a mon inexpensive capacitor in order to function. Power consumption is only 600µA in most applications. In most cases the power supply need only be minimally regulated, for example by Zener diodes or an inexpensive 3-terminal regulator. The QT113’s RISC core employs signal...