Rainbow Electronics AT42QT1012 User Manual
Features
Note: This is a summary document.
A complete document is available.
For more information contact
www.atmel.com/touch.
Features
•
Number of Keys:
– One toggle mode (touch-on/touch-off), plus programmable auto-off delay and
external cancel
– 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 external capacitor (Cs)
•
Interface:
– Digital output, active high or active low (hardware configurable)
•
Moisture tolerance:
– Good
•
Power:
– 1.8V ~ 5.5V; 32.5 µA at 1.8V
•
Package:
– 6-pin SOT23-6 (3 x 3 mm) RoHS compliant
•
Signal processing:
– Self-calibration, auto drift compensation, noise filtering
•
Applications:
– Power switch replacement in countertop appliances, irons, battery powered toys,
heaters, lighting controls, automotive interior lighting, commercial and industrial
equipment such as soldering stations and cooking equipment
•
Patents:
– QTouch
®
(patented charge-transfer method)
One-channel
Toggle-mode
Touch Sensor
IC with Power
Management
Functions
AT42QT1012
Summary
9543CS–AT42–02/10