1 CVD Overview

The CVD feature of the ADC² was developed to require only an Analog-to-Digital Converter and a very minimal amount of software to measure the capacitance of a pin connected to an external conductive sensor, such as a metal pad. By integrating the hardware needed for CVD sensing into the ADC² module, the need for external hardware and complex digital filtering is eliminated. Users can add capacitive touch and proximity sensing functionality into their application quickly without the need for external hardware or signal processing. The CVD allows the environmental changes around a capacitive sensor tied to an analog channel to be read and converted to a digital value by the ADC². The results of the ADC² conversion from the CVD reading can be easily processed and used by the PIC microcontroller.