The topology and test technology of Digitally Controlled Potentiometers

The Digitally Controlled Potentiometers (DCP) is a new type of electronic device with great developing foreground, which can replace the traditional mechanical potentiometer in many fields. The programmable gain amplifier, programmable filter and others programmable analogy devices can be built using SCM and DCP through programming. Thereby it is realizable to “Set the analogy device onto the bus” (controlling analogy modules through bus by MCU). The methods presented all have practical significance.