MTCH101 Datasheet, PDF (3/20 Pages) Microchip Technology – Single-Channel Proximity Detector

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
MTCH101
Proximity Sensor
Proximity
Scan Driver
Power Mode
Control
ADC
Data Filtering
Proximity
Decoding
State Output
Host/
Discrete
Components
MTCH101
Sensitivity Adjust
 2012-2013 Microchip Technology Inc.
Preliminary
DS40001664B-page 3