DEVICE FOR CONROLLING DUTY RATIO OF SIGNAL

摘要

Disclosed is a device for controlling a duty ratio of a signal. The device for controlling a duty ratio of a signal includes a clock control unit for generating a plurality of control signals for controlling a duty ratio based on an input signal; a half-period generating unit for generating first and second dividing signals which are reversed to each other by dividing a multiplied signal generated by using a delay signal generated by delaying an input signal in response to an input signal delay control signal; a comparing unit for comparing pulse widths of the first and second dividing signals based on a control signal provided from the clock control unit with each other to generate a delay control signal corresponding to the comparison result; a control voltage generating unit for outputting a delay control voltage corresponding to the delay control signal. Thus, a desired duty ratio of a signal may be set rapidly and exactly.