Datasheet

 2012 Microchip Technology Inc. Preliminary DS41664A-page 3
MTCH101
1.0 DEVICE OVERVIEW
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).
FIGURE 1-1: BLOCK DIAGRAM
ADC
Proximity
Scan Driver
Proximity Sensor
Data Filtering
Proximity
Decoding
Power Mode
Control
State Output
Sensitivity Adjust
Host/
Discrete
Components
MTCH101