Leadis LDS6040触摸控制和LED驱动方案
VibeTonz®-Ready Haptics驱动器,从而能实现基于触摸的输入控制,包括滑动, 滚轮和按键. LDS6040具有15个传感器输入,每个传感器的更新速率为2ms,其中的8个传感器输入用来配置LED驱动器,驱动高达8mA的电流,而LED调光则由不同的瞬变时间实现,在最大输出电流时有32种调光.LED是由驱动器连接到传感器输入而自动激活的,因此不需要主处理器来点亮LED.因此可广泛应用在手机,MP3/MP4,游戏机,遥控和电视机等.本文介绍了LDS6040的主要特性,方框图以及应用电路框图.
LDS6040 PureTouch™ Capacitive Touch Controller with Integrated Keypad LED Driver and VibeTonz®-Ready Haptics Driver
The LDS6040 is a programmable touch controller with integrated VibeTonz®-Ready haptics driver and keypad LED drivers for use with capacitive sensor arrays implementing touch-based input controls including sliders, scroll wheels, and buttons. Featuring 15 sensor inputs, the LDS6040 provides fast update rates of 2ms per sensor input with on-chip automatic calibration logic continuously monitoring the environment to adjust ambient baseline levels to increase touch accuracy.
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