Delaying the 1st impulse signal to which the multiple delay

摘要

PROBLEM TO BE SOLVED: To provide a high-resolution and high-speed pulse phase difference detection circuit, and to provide an A/D conversion circuit using the pulse phase difference detection circuit.;SOLUTION: The pulse phase difference detection circuit 101 includes: a first delay circuit DC1 for delaying a received first pulse signal and outputting it as a second pulse signal, wherein a plurality of delay units DU each having an equal delay amount are connected in series; a second delay circuit DC2 for receiving the second pulse signal, wherein a plurality of delay units each having a delay amount are connected in series; a first delay adjustment circuit for adjusting a delay amount to the second pulse signal and inputting it as a third pulse signal to the first delay circuit again; and a pulse arrival position detection circuit for detecting a pulse arrival position of the first pulse signal on the basis of an output of each delay unit of the first delay circuit where the third pulse signal transmits and an output of each delay unit of the second delay circuit where the second pulse signal transmits.;COPYRIGHT: (C)2010,JPO&INPIT