MTCH101专用触摸芯片

　　Features： • Capacitive Proximity Detection System： - High Signal to Noise Ratio （SNR） - Adjustable sensitivity - Noise rejection filters - Automatic Environmental Compensation - Wide range of sensor shape and size support - Stuck Release Mechanism • No External Components • Low-Power mode • Response Time Down to 75 ms • Wide Operative Voltage： - 2.0V to 5.5V • Operating Temperature： - -40°C to +85°C Applications： • Light Switch • Portable Device Enabler • White Goods and Appliances • Office Equipment and Toys • Display and Keypad Backlighting Activation • SAR Compliant Application

　　The MTCH101 provides an easy way to add proximity or touch detection to any human interface application. The device integrates a single-channel capacitive proximity detection， which can work through plastic， glass or wood-front panel. It also supports a wide range of conductive materials as sensor， like copper pad on PCB， silver or carbon printing on plastic， Indium Tin Oxide （ITO） pad， wire/cable， etc. On-board adjustable sensitivity and power mode selection allow the user to configure the device at run time easily. An active-low output will communicate the state of the sensor to a host/master MCU， or drive an indication LED （see Figure 1-1）.