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Performance Analysis of Adaptive Bandwidth PLL According to Board Design  

Son, Young-Sang (School of Electronic Engineering Soongsil University)
Wee, Jae-Kyung (School of Electronic Engineering Soongsil University)
Publication Information
Abstract
In this paper, a integrated phase-locked loop(PLL) as a clock multiphase generator for a high speed serial link is designed. The designed PLL keeps the same bandwidth and damping factor by using programmable current mirror in the whole operation frequency range. Also, the close-loop transfer function and VCO's phase-noise transfer function of the designed PLL are obtained with circuit netlists. The self impedance on board-mounted chip is calculated according to sizes and positions of decoupling capacitors. Especially, the detailed self-impedance analysis is carried out between frequency ranges represented the maximum gain in the close-loop transfer function and the maximum gain in the VCO's phase noise transfer function. We shows PLL's jitter characteristics by decoupling capacitor's sizes and positions from this result. The designed PLL has the wide operating range of 0.4GHz to 2GHz in operating voltage of 1.8V and it is designed 0.18-um CMOS process. The reference clock is 100MHz and PLL power consumption is 17.28mW in 1.2GHz.
Keywords
phase-locked loop; loop bandwidth; jitter; PEEC model;
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Times Cited By KSCI : 1  (Citation Analysis)
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