Capacitive Proximity Sensing Using the FDC1004 (Rev. A)

Capacitive proximity sensing can be implemented in a wide variety of applications with the use of TI's FDC1004 and with the flexibility of the sensor design in many system environments. Not only are there advantages of using capacitive proximity sensing compared to alternative detection methods, there are also guidelines to follow to ensure maximum performance and stability with the sensing system. This application note describes in detail the basics of proximity sensing and sensor topology considerations that affect various system parameters.