A 2㎓ DLL-Based Frequency Multiplier for Dynamic Frequency Scaling

A delay-locked loop (DLL)-based clock generator for dynamic frequency scaling has been developed in a CMOS technology. The proposed clock generator can generate clock signals ranging from 125㎒ to 2㎓ and change the frequency dynamically in a short time. In addition, it can operate at a wide range operation frequency by using the proposed anti-harmonic lock block. The proposed DLL-based clock generator occupies 0.019㎟.