概览

简介

The Renesas capacitive sensor, CTSU2 can utilize an active shield without any external components. Active shielding is effective in improving water resistance as well as improving the noise immunity of self-capacitance buttons.
The Self-Capacitance Waterproof Button Solution reference design compares the water resistance of traditional GND shields to the active shield for the self-capacitance buttons.

See the Waterproof Shower Controller for a sample application of a self-capacitance waterproof button solution.

Self-capacitance waterproof buttons - electrode board

  • This is based on a Renesas capacitive touch key solution with high sensitivity and high noise immunity
  • Usage example of the CTSU2's active shield
  • Self-capacitance touch buttons provide both water resistance and noise immunity
  • Supports the IEC 61000 4-3 Level 3 radiated electromagnetic noise immunity standard
  • This is applicable for various products such as white goods that require water resistance, water-related products and outdoor mounted equipment, etc.

Renesas' “Self-Capacitance Waterproof Button Solution” solves problems with conventional technology (GND shield, mutual capacitance buttons).

图像
Self-Capacitance Waterproof button solution

应用

文档

类型 文档标题 日期
应用文档 PDF 3.34 MB 日文
应用文档 PDF 4.52 MB 日文
应用文档 PDF 6.20 MB English(英语) , 日文
应用文档 登录后下载 PDF 1.12 MB 日文
应用文档 PDF 1.33 MB 日文
应用文档 PDF 1.22 MB 日文
手册 - 硬件 PDF 2.28 MB 日文
7 items

设计和开发

软件与工具

软件下载

类型 文档标题 日期
PCB设计文档 登录后下载 ZIP 1.38 MB
应用: 物联网(IoT)
Function: HMI
1 item

样例程序

相关评估板和套件

开发板与套件

自感防水触摸按键解决方案

静电电容触控感应组件“CTSU2”,强化抗噪性能,且支持“有源屏蔽”的功能,能有效的提高自感触摸按键的防水性能。本方案配置了一个 GND 屏蔽和一个有源屏蔽。可以比较不同屏蔽方法的防水性能。