| 摘要 |
PROBLEM TO BE SOLVED: To provide a duty ratio adjustment device capable of adjusting a duty ratio with simple configuration, and a duty ratio adjustment method.SOLUTION: A duty ratio adjustment device 20 comprises: a data output part 21 which outputs a high-level signal 101 and a low-level signal 102; a multiplexer 22 which alternately selects any one of the high-level signal and the low-level signal on the basis of a selection signal 106 and outputs a non-inverted output signal 103 and an inverted output signal 104 each having a predetermined frequency including a high-level signal component and a low-level signal component; coils 31 and 32 which detect DC voltages of the non-inverted output signal 103 and the inverted output signal 104, respectively; a differential calculation part 35 that calculates a differential between each of the DC voltages; and a differential amplifier 37 that amplifies a differential between a signal obtained by inverting and inputting the differential of the DC voltages and a 1/2 clock signal 100.SELECTED DRAWING: Figure 1 |
