Suited for next-generation portable touch devices, including power buttons, hearing devices, consumer toys, and proximity sensors, the AT42QT101X family of flexible single-channel capacitive touch key ICs offers a power consumption below 17 µA. The family consists of the AT42QT1010, which includes a timer to reset a “stuck-key” condition after 60 s, while the AT42QT1011 indicates a touch condition while the sensor is “in-detect” mode but does not have a timeout.
The AT42QT1012 includes a touch-on/ touch-off or “toggle” key and also includes a configurable power-down timer, preventing devices from inadvertently being left on. When a key touch is detected, these devices will temporarily switch to a 12.6 ms fast response mode, allowing additional touches to be detected quickly. (From $0.20 ea/prod qty — available now.)
Atmel, USA , San Jose , CA
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