Capacitive sensing is an effective technique for applications ranging from proximity detection and gesture recognition to liquid level sensing. Depending on the specific application, there will be different system requirements regarding sensitivity, responsiveness, and power. Power consumption is a key parameter for many applications, including wearables, consumer electronics, and some automotive applications. This application note covers techniques to reduce power consumption for TI’s FDC2x1x capacitive-to-digital converters and various experiments to verify the effectiveness of these power-reducing techniques.