AT42QT1011 Datasheet, PDF (1/18 Pages) ATMEL Corporation – One-channel Touch Sensor IC

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 x 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:
– Good
• Power:
– 1.8V – 5.5V; 17 µA at 1.8V typical
• Package:
– 6-pin SOT23-6 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^® (patented charge-transfer method)
– HeartBeat^™ (monitors health of device)
One-channel
Touch Sensor
IC
AT42QT1011
9542G–AT42–03/10