AT42QT1011 AT42QT1011 Data Sheet Introduction The AT42QT1011 is a digital burst mode charge-transfer sensor that is capable of detecting near proximity or touch, making it ideal for implementing touch controls. The QT1011 is designed specifically for human interfaces like control panels, appliances, toys, lighting controls, or anywhere a mechanical switch or button may be found. It includes all hardware and signal processing functions necessary to provide stable sensing under a wide variety of changing conditions. Only a single low-cost capacitor is required for operation. Features Number of Keys: One configurable as either a single key or a proximity sensor Technology: Patented spread-spectrum charge-transfer (direct mode) Key outline sizes: 6 mm 6 mm or larger (panel thickness dependent) widely different sizes and shapes possible Electrode design: Solid or ring electrode shapes PCB Layers required: One Electrode materials: Etched copper, silver, carbon, Indium Tin Oxide (ITO) Electrode substrates: PCB, FPCB, plastic films, glass Panel materials: Plastic, glass, composites, painted surfaces (low particle density metallic paints possible) Panel thickness: Up to 12 mm glass, 6 mm plastic (electrode size and Cs dependent) Key sensitivity: Settable via capacitor (Cs) Interface: Digital output, active high Moisture tolerance: Increased moisture tolerance based on hardware design and firmware tuning Operating Voltage: Datasheet DS40001947A-page 1 2017 Microchip Technology Inc. AT42QT1011 1.8 V 5.5 V 17 A at 1.8 V typical Package: 6-pin SOT23-6 RoHS compliant 8-pin UDFN/USON RoHS compliant Signal processing: Self-calibration, auto drift compensation, noise filtering Infinite max on-duration Applications: Control panels, consumer appliances, proximity sensor applications, toys, lighting controls, mechanical switch or button, Patents: QTouch technology (patented charge-transfer method) HeartBeat (monitors health of device) DS40001947A-page 2 Datasheet 2017 Microchip Technology Inc.