TY - JFULL AU - Tsunwai Gary Yip PY - 2008/6/ TI - Phase Jitter Transfer in High Speed Data Links T2 - International Journal of Computer and Information Engineering SP - 1473 EP - 1477 VL - 2 SN - 1307-6892 UR - https://publications.waset.org/pdf/12796 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 17, 2008 N2 - Phase locked loops in 10 Gb/s and faster data links are low phase noise devices. Characterization of their phase jitter transfer functions is difficult because the intrinsic noise of the PLLs is comparable to the phase noise of the reference clock signal. The problem is solved by using a linear model to account for the intrinsic noise. This study also introduces a novel technique for measuring the transfer function. It involves the use of the reference clock as a source of wideband excitation, in contrast to the commonly used sinusoidal excitations at discrete frequencies. The data reported here include the intrinsic noise of a PLL for 10 Gb/s links and the jitter transfer function of a PLL for 12.8 Gb/s links. The measured transfer function suggests that the PLL responded like a second order linear system to a low noise reference clock. ER -