PULSE SIGNAL DELAY DEVICE, AND PULSE SIGNAL PHASE DETECTOR AND CLOCK GENERATOR USING THE DEVICE

摘要

A pulse signal delay device provides a fixed gate delay time in a digital integrated circuit (such as a CMOS circuit) independently of changes in a power supply voltage or environmental temperature. The device includes a series connection of delay units each having a minimum unit delay time and a circuit for continuously measuring the delay time of each delay unit, wherein a desired delay time is multiplied by the reciprocal of the delay time of each delay unit, and the number of stages of the delay units required for a predetermined delay time is automatically selected on the basis of the multiplication result, thus achieving a stabilized delay time.