CIRCUIT FOR DRIVING CURRENT CELL OF DIGITAL-ANALOG CONVERTER

摘要

PURPOSE: A circuit for driving a current cell of a digital-analog converter is provided to minimize the glitch noise of a current cell by reducing the driving swing width of the current cell by limiting the voltage of the differential control signal to the predetermined voltage level by constructing the voltage limiter on the front end of the current cell. CONSTITUTION: A circuit for driving a current cell of a digital-analog converter provided with a current cell driving circuit(100) for generating a first and a second differential control signals and a current cell(200) for operating as a current source in response to the first and the second differential control signal includes a latch device(110) provided into the current cell driving circuit(100) for outputting the first and the second latch signals by latching the signal inputted in response to the clock signal and a voltage limiter(120) for outputting the first and the second differential control signals by limiting the first and the second latch signals to a predetermined level.