QT1103 - QUANTUM

QT1103 10-KEY SENSOR IC

lQ QT1103 QTOUCH™ 10-KEY SENSOR IC This datasheet is applicable to all revision 3 chips DETECT SYNC/LP VSS SNS7K SNS7 SNS6K SNS6 SNS5K The QT1103 is designed for low cost appliance, mobile, and consumer electronics applications. QTouch™ technology is a type of patented charge-transfer sensing method well known for its robust, stable, EMC-resistant charac.

Features

as the older device but differs in the following ways:
• Rs resistors on each channel eliminated
• Up to 4x more sensitive for a given value of Cs
• Shorter burst lengths, less power for a given value of Cs
• ‘Burst A and B’ only mode for up to eight keys, with less power
• ‘Burst B’ only mode for up to four keys, with less power than ‘Burst A and B’ mode
• Requires an external reset signal The QT1103 should be used instead of the QT1101 for new designs due to a simpler circuit, lower power and lower cost. 1.2 Parameters 1.2.1 Introduction The QT1103 is an easy to use, ten touch-key sensor IC .