A Low-Jitter and Low-Reference-Spur Ring-VCO- Based Injection-Locked Clock Multi

Abstract

This work presents a low-jitter , low-reference-spur ring voltage-controlled oscillator (ring VCO)-based injection- locked clock multiplier (ILCM). Since the proposed triple-point frequency/phase/slope calibrator (TP-FPSC) can accurately remove the three root causes of the frequency errors of ILCMs (i.e., frequency drift, phase offset, and slope modulation), the ILCM of this work is able to achieve a low-level-reference spur . In addition, the calibrating loop for the frequency drift of the TP-F