QT1081 - Quantum

QT1081 8-KEY QTOUCH SENSOR IC

lQ This datasheet is applicable to all revision 1 chips SYNC/LP VSS DETECT SNS7K SNS7 QT1081 8-KEY QTOUCH™ SENSOR IC The QT1081 is an improved, lower cost, simplified circuit version of the popular QT1080 sensor IC. The QT1081 is designed for low cost appliance, mobile, and consumer electronics applications. QTouch™ technology is a type of patented charge-.

Features

as the older device but differs in the following ways: Š Rs resistors on each channel eliminated Š Up to 4x more sensitive for a given value of Cs Š Shorter burst lengths, less power for a given value of Cs Š ‘Burst B’ only mode for lower key counts with less power The QT1081 should be used over the QT1080 for new designs due to a simpler circuit, lower power and lower cost. 1.2.6 Detection Integrator Confirmation Detection Integrator (DI) confirmation reduces the effects of noise on the QT1081. The ‘detect integrator’ mechanism requires consecutive detections over a number of measurement bur.