www.
DataSheet4U.
com LQ 32-KEY QMATRIX™ CHARGE-TRANSFER IC Gnd I4 AIN Vcc X4 X5 X2 X3 X1 I2 I3 QT60320D Creates 32 ‘touch buttons’ through any dielectric 100% autocal for life - no adjustments required 'N' key rollover: senses all 32 keys in parallel Keys individually adjustable for sensitivity Mix 'n match key sizes & shapes in one panel Tolerates a 20:1 variance in key sizes on a panel Panel thicknesses to 5 cm or more Back lit keys possible with ITO electrodes LED status function drives User-addressable multifunction drive pins User-addressable internal eeprom Simple, universal serial interface 5V single supply operation 44-pin TQFP package One square inch (6.
5 square cm) of PCB requir...

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