QT100

www.DataSheet4U.com LQ ! ! ! ! ! ! ! ! ! 2V to 5V single supply operation 10µA low power mode @ 2V Self-calibrating on power-up Sensitivity easily adjusted Consensus filter for noise immunity Autorecalibration timeout HeartBeat™ health indicator on output Only a few passive external parts required RoHS compliant SOT23-6 package QT100 CHARGE-TRANSFER QTOUCH™ IC OUT VSS SNSK 1 2 3 6 5 4 SYNC/MODE VDD SNS The QT100 charge-transfer (‘QT’) touch sensor is a self-contained digital IC capable of detecting near-proximity or touch. It will project a touch or proximity field through any dielectric like glass, plastic, stone, ceramic, and even 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, 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. Power consumption is less than 500µA in most applications when running in Fast response mode. This typically drops to 5-10µA at 2V VDD in Low Power mode, depending on the burst length. In most cases the power supply need only be minimally regulated; for example, by Zener diodes or an inexpensive three-terminal regulator. The QT100 only requires a common inexpensive X7R ceramic capacitor in order to function. The QT100’s Reduced Instruction Set C...