DIGITAL/ANALOG CONVERTER

摘要

PURPOSE: A digital/analog converter is provided to restrict a noise generated from an output power of a current cell by using a signal level controller for driving a power source. CONSTITUTION: The digital/analog converter comprises: an OR/AND buffer(21) for outputting a power voltage as a general logical value and a power source driving signal having a level of grounding after performing a logical operation for a digital signal formed by decoding each current cell of current cell matrix; a power source(23) for outputting a constant current according to the power source driving signal; a signal level controller(22) for driving the current source by controlling the level of the current source driving signal from the OR/AND buffer.