QT1101 - QUANTUM

QT1101 10 KEY QTOUCH SENSOR IC

www.DataSheet4U.com lQ " Patented charge-transfer (‘QT’) design " Ten independent QT sensing fields (keys) " 2.8V ~ 5.5V single supply operation " 40µA current typ @ 3V in 360ms LP mode " 100% autocal for life - no adjustments required " Serial one or two wire interface with auto baud rate " Fully debounced results " Patented AKS™ Adjacent Key Suppression ".

Features

which provide for reliable, trouble-free operation over the life of the product. Burst operation: The device operates in ‘burst mode’. Each key is acquired using a burst of charge-transfer sensing pulses whose count varies depending on the value of the reference capacitor Cs and the load capacitance Cx. In LP mode, the device sleeps in an ultra-low current state between bursts to conserve power. The keys signals are acquired using three successive bursts of pulses: Burst A: Keys 0, 1, 4, 5 Burst B: Keys 2, 3, 6, 7 Burst C: Keys 8, 9 Bursts always operate in A-B-C sequence. Self-calibration: On.