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）.