说明：  类同IPOD转轮音量控制的触摸IC,主要针对便携式和家用电器应用。它们具有更低的功耗，增强了在苛刻感测条件下工作的能力，并且能很方便地在转轮中心安置一个机械按钮(QT511)，使转轮无须反应无意的触摸。
(IPOD similar touch-wheel volume control IC, the main applications for portable and household appliances. They have lower power consumption, enhanced sensing in harsh conditions, the ability to work and can be easily in a mechanical wheel center button placement (QT511), so that there is no need reaction wheels do not intend to touch.)