Phase-combining circuit and timing signal generator circuit for carrying out a high-speed signal transmission

摘要

A phase-combining circuit for combining cyclic timing waveforms that have been phase-controlled by control signals based on three or more input signals ( phi 1 to phi 4) of different phases, has a weight signal generating circuit and a weighting circuit (5). The weight signal generating circuit generates weights (W1 to W4) according to the control signals, and the weighting circuit (5) gives the weights to the respective input signals ( phi 1 to phi 4), with a polarity of positive or negative for each one signal. Alternatively, two or more input signals have weights applied to them each of which varies in both a positive and negative range.