VARIABLE DELAY CIRCUIT

摘要

PROBLEM TO BE SOLVED: To change a delay characteristic of a variable delay circuit by blowing out fuses. SOLUTION: A plurality of delay paths 20-1-20-n to which a node N1 is connected in common via an input terminal IN have delay characteristics in response to number of inverters 21. Connection selection circuits 30-1-30-n are respectively provided between nodes N2 of the delay paths 20-1-20-n and an output terminal OUT. A delay path having a desired delay characteristic is selected and connected to the output terminal OUT by properly blowing out fuses in the connection selection circuits 30-1-30-n.