Dll circuit, time difference amplifier circuit, and distance-measuring imaging device

A delay-locked loop (DLL) circuit, comprising:

• a time difference amplifier circuit that includes a plurality of current sources for setting a time difference amplification factor and an input time difference range, the time difference amplifier circuit amplifying, to a first signal and a second signal which are input, a time difference between an edge that is a change point of a logic level included in the first signal and an edge that is a change point of a logic level included in the second signal, using the plurality of current sources and outputting a first amplified signal and a second amplified signal obtained;
• a phase comparison circuit that calculates a phase difference between the first amplified signal and the second amplified signal output from the time difference amplifier circuit and outputs a phase difference signal indicating the phase difference calculated;
• and
• a variable delay circuit that delays the second signal by an amount of delay depending on the phase difference indicated by the phase difference signal output from the phase comparison circuit and outputs a delayed signal obtained by delaying the second signal.