The MTCH102, MTCH105 and MTCH108 devices from Microchip are Capacitive Touch/Proximity Controller ICs that convert touch or proximity detection into a simple digital output. The sensitivity level of the controller is configurable and a low-power mode included, allowing for easy optimisation.

High Signal to Noise Ratio (SNR)
Adjustable Sensitivity with Compensation for Different Sensor Sizes
Multi-Stage Active Noise Suppression Filters
Automatic Environmental Compensation
Supports a Wide Range of Sensor Shapes and Sizes
Simple I/O Interface
Smart Scan Scheduling
Threshold Hysteresis
Flexible Low-Power Mode
Brown-Out Protection
Operating Voltage Range: 2.05V to 3.6V
Operating Temperature: -40°C to +85°C

Human Machine Interface (HMI), Microchip