900MHz to 1.2GHz Two-Phase Resonant Clock Network with Programmable Driver and Loading

Abstract

A resonant clock network with programmable driver and loading is designed in a 0.13mum CMOS technology. The 2mm times 2mm distribution network has on-chip inductors and performs a forced oscillation at the rate of a reference clock programmable in the 900MHz to 1.2GHz range. Clock amplitude and energy efficiency trade-offs at and off resonance are explored with various driver configurations. Energy efficiency per cycle is 1.39 to 1.56 times greater than previous resonant distribution networks