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AT42QT1040 fiches techniques PDF

ATMEL Corporation - Touch Sensor IC

Numéro de référence AT42QT1040
Description Touch Sensor IC
Fabricant ATMEL Corporation 
Logo ATMEL Corporation 





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AT42QT1040 fiche technique
Features
Number of Keys:
– Up to 4
Discrete Outputs:
– 4 discrete outputs indicating individual key touch
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– Patented spread-spectrum charge-transfer (direct mode)
Electrode Design:
– Simple self-capacitance style (refer to the Touch Sensors Design Guide)
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 10 mm glass, 5 mm plastic (electrode size dependent)
Key Sensitivity:
– Fixed key threshold, sensitivity adjusted via sample capacitor value
Adjacent Key Suppression
– Patented Adjacent Key Suppression(AKS) technology to enable accurate key
detection
Interface:
– Pin-per-key outputs, plus debug mode to observe sensor signals
Moisture Tolerance:
– Good
Power:
– 1.8V ~ 5.5V
Package:
– 20-pin 3 x 3 mm VQFN RoHS compliant
Signal Processing:
– Self-calibration, auto drift compensation, noise filtering, Adjacent Key
Suppression technology
Applications:
– Mobile, consumer, white goods, toys, kiosks, POS, and so on
QTouch4-key
Sensor IC
AT42QT1040
9524A–AT42–03/09

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