(China (Mainland))
Product Summary
The QT220-IG is a self-contained digital sensor IC. The device is capable of detecting near-proximity or touch on 2 electrodes. The QT220-IG allows electrodes to project independent sense fields through any dielectric like glass, plastic, stone, ceramic, and wood. It can also turn metal-bearing objects into intrinsic sensors, making them responsive to proximity or touch. This capability coupled with its continuous self-calibration feature can lead to entirely new product concepts, adding high value to product designs. The applications of the QT220-IG include Instrument panels, Gaming machines, Access systems, Pointing devices, Appliance controls, Security systems, PC Peripherals and .Backlighted buttons
Parametrics
QT220-IG absolute maximum ratings: (1)Operating temp: as designated by suffix; (2)Storage temp: -55℃ to +105℃; (3)VDD: -0.3 to +5.5V; (4)Max continuous pin current, any control or drive pin: ±20mA; (5)Short circuit duration to ground, any pin: infinite; (6)Short circuit duration to VDD, any pin: infinite; (7)Voltage forced onto any pin: -0.3V to (Vdd + 0.3) Volts.
Features
QT220-IG features: (1)Two independent charge-transfer touch keys; (2)Individual outputs per channel - active high; (3)Projects prox fields through any dielectric; (4)Sensitivity easily adjusted on a per-channel basis; (5)100% autocal for life - no adjustments required; (6)3.9V ~ 5.5V single supply operation; (7)10s, 60s, infinite auto-recal timeout (strap options); (8)Sync pin for line sync to suppress noise; (9)Spread spectrum operation; (10)Pin options for auto recalibration timings; (11)Extremely low cost per key; (12)20-SSOP Pb-free package.
Diagrams
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 QT220-ISSG |
Atmel |
Interface - Specialized 3.9 - 5.5V 2 Chan Touch Sensor |
Data Sheet |
Negotiable |
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