QMatrix™ Technology White Paper
Published by Microchip Technology Inc
QMatrix devices are digital charge-transfer (QT) ICs designed to detect touch using a scanned, passive matrix of electrode sets to achieve a large number of touch keys driven by a single chip.
This configuration leads to a high pin count efficiency in the sensing chip and allows for a small number of connections between the chip and the key matrix, when compared with sensing technologies such as QTouch which require one sensing connection for each key. These devices achieve the lowest possible cost per key possible with the lowest parts count.