This Note lists a number of application circuits for Xicor’s digitally-controlled (XDCP) potentiometers. The application circuits, shown in basic form, illustrate the wide variety of possible functions that can be implemented using the variability of the potentiometer in conjunction with standard active devices like operational amplifiers and comparators. The types of circuits include control circuits, converters, filters, signal processing circuits, regulators, waveshapers, analog computing circuits, and signal sources. In the detail design of these circuits, proper supply filtering and proper grounding techniques must be used.