DELAY COMPARATOR CIRCUIT, DELAY COMPARISON METHOD, DELAY CIRCUIT, AND SEMICONDUCTOR INTEGRATED CIRCUIT

摘要

PROBLEM TO BE SOLVED: To provide a delay comparator circuit for comparing delay differences (phase differences) in a plurality of delay circuits with high precision.;SOLUTION: The delay comparator circuit is configured of a plurality of delay lines 1 and 2, a plurality of oscillator auxiliary circuits 6, 8; 7, 9 for oscillating each of the delay lines, a plurality of counters 3 and 4 for counting the oscillation outputs of the oscillated delay lines to calculate each count value, and a comparison part 5 for comparing each count value with a reference count value.;COPYRIGHT: (C)2011,JPO&INPIT