Title :
A Forwarded Clock Receiver Based on Injection-Locked Oscillator With AC-Coupled Clock Multiplication Unit in
m CMOS
Author :
Young-Ju Kim ; Sang-Hye Chung ; Lee-Sup Kim
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Korea Adv. Inst. of Sci. & Technol., Daejeon, South Korea
Abstract :
This brief presents a forwarded clock receiver based on an injection-locked oscillator with a simple clock multiplication unit (CMU) to reduce the clock jitter and power consumption of the CMU. In addition, an optimal clock multiplication factor is considered to optimally multiply the clock frequency without serious degradation of the jitter correlation between data and clock. The proposed CMU employs ac coupling and a superposition technique to generate first-harmonic injection pulses. The measured power efficiency of the proposed receiver is 1.69 mW/Gb/s at a 7.4-Gb/s data rate in a 1.2 V 0.13-μm CMOS process.
Keywords :
CMOS analogue integrated circuits; clocks; correlation methods; harmonic generation; injection locked oscillators; jitter; pulse generators; AC-coupled clock multiplication unit; CMOS process; CMU; bit rate 7.4 Gbit/s; clock jitter reduction; first-harmonic injection pulse generation; forwarded clock receiver; injection-locked oscillator; jitter correlation; optimal clock multiplication factor; power consumption; size 0.13 mum; superposition technique; voltage 1.2 V; Clocks; Correlation; Frequency conversion; Injection-locked oscillators; Inverters; Jitter; Receivers; Clock frequency multiplication unit; forwarded clock (FC) receiver; injection-locked oscillator (ILO); injection-locked oscillator (ILO).;
Journal_Title :
Very Large Scale Integration (VLSI) Systems, IEEE Transactions on
DOI :
10.1109/TVLSI.2014.2318755