Electric Field Imaging Device

The MC33941 is intended for cost-sensitive applications where non-contact sensing of objects is desired. When connected to external electrodes, an electric field is created. The MC33941 detects objects in this electric field. The IC generates a low-frequency sine wave, which is adjustable by using an external resistor and is optimized for 120 kHz.

FEATUREs
ï Supports up to 7 Electrodes
ï Shield Driver for Driving Remote Electrodes Through Coaxial
ï High-Purity Sine Wave Generator Tunable with External Resistor
ï Response Time Tunable with External Capacitor
ï +5V Regulator to Power External Circuit
ï Can support up to 28 touch pad sensors (2 way multiplexing)
ï Extended Temperature Range 0 to 110^oC
ï Pb-Free and RoHS compliant

Typical Applications
ï Appliance Control Panels and Touch Sensors
ï Linear and Rotational Sliders
ï Spill Over Flow Sensing Measurement
ï Refrigeration Frost Sensing
ï Industrial Control and Safety Systems Security
ï Proximity Detection for Wake-Up Features
ï Touch Screens
ï Garage Door Safety Sensing
ï PC Peripherals
ï Patient Monitoring
ï Point of Sale Terminals
ï Size Detection
ï Liquid Level Sensing