AKM AK4160 16路容性触摸传感器解决方案
AKM公司的AK4160是低工作电压和低功耗16路容性触摸传感器,其中的8路可配置成LED驱动器或GPIO,对每个传感端子具有自动的环境漂移修正功能,I2C串行接口,带S/H电路的10位SAR ADC,并集成了稳压器.主要用在手机,PC和家用电器.本文介绍了AK4160主要特性,方框图,16路触摸开关连接图以及8路触摸开关和8路LED显示器连接图,评估板AKD4160-A功能,方框图,电路图和元件布局图.
The AK4160 is a low operating voltage and low power consumption 16-channel capacitive touch sensor.
Maximum 8 channels out of the 16-channel can be configured to LED drive or GPIO. The AK4160 has a channel independent automatic correct function of environmental drifts for each sense input. It reduces false detection by continuous calibration of the internal reference value in the situation when the input capacitance of the touch switch is changed by the external factors such as hydrothermal conditions. The automatic initial setting function sets the charge current and charge time according to the size and the shape of a touch switch. The AK4160 can be configured via serial interfaces, it is suitable for mobile phones, PCs and home electric applications.
AK4160主要特性:
Up to 16 capacitive sensor inputs
Up to 8 general purpose inputs/outputs with PWM control for LED
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