the dca circuit 212 outputs a duty cycle correction signal that varies the duty cycle of signals provided to the first driver stage 202 changing the duty cycle of the signals provided to the first driver stage 202 in turn affects the duty cycle output from the first driver stage 202 the second driver stage 204 the output stage 206 and the replica output stage 220 the output of which is for duty cycle purposes identical or nearly identical to the output from the output stage 206 the replica output stage 220 like the output stage 206 receives its input from the output of the second driver stage 204 the replica output stage 220 has identical or nearly identical duty cycle characteristics as the output stage 206 but the replica output stage 220 consumes far less current than the output stage 206 because the replica output stage 220 is not required to have significant power driving capability accordingly the replica output stage 220 behaves with respect to duty cycle properties identically or nearly identically to the output stage 206 so that the dca circuit 212 can accurately control the duty cycle of the signals coupled from the output stage 206 regardless of the coupling or the termination i e the loading of the output stage 206 the first and second driver stages 202 204 the output stage 206 and the replica output stage 220 may be integrated onto a single substrate using semiconductor fabrication.