AT42QT1040-MMH

The AT42QT1040-MMH is a digital burst mode, charge-transfer (QT™) Capacitive Sensor Driver, designed for touch-key applications. It can sense from one to four keys-one to three keys can be disabled by not installing their respective sense capacitors. The device includes all signal processing functions necessary to provide stable sensing under a wide variety of changing conditions. The outputs are fully debounced. Only a few external parts are required for operation. The device modulates its bursts in a spread-spectrum fashion in order to heavily suppress the effects of external noise and to suppress RF emissions.

• Up to 4 QTouch® keys
• 4 Discrete outputs indicating individual key touch
• Patented spread-spectrum charge-transfer (direct mode)
• Simple self-capacitance style
• Etched copper, silver, carbon, indium tin-oxide (ITO)
• PCB, FPCB, plastic films, glass electrode substrates
• Plastic, glass, composites, painted surfaces panel
• Up to 10mm glass, 5mm plastic panel
• Fixed key threshold, sensitivity adjusted via sample capacitor value key sensitivity
• Adjacent key suppression

Anwendungen

Logistik, Unterhaltungselektronik

Warnungen und Hinweise

Der funktionale Betrieb dieses Bausteins bei diesen oder anderen Bedingungen, die über die im Abschnitt „Operation“ im Technischen Datenblatt angegebenen Werte hinausgehen, ist nicht vorausgesetzt.