跳至主要内容

A Static Phase Offset Reduction Technique for Multiplying Delay-Locked Loop

Read  full  paper  at:
http://www.scirp.org/journal/PaperInformation.aspx?PaperID=53422#.VMG_ySzQrzE

ABSTRACT
Static phase offset (SPO) in conventional multiplying delay-locked loops (MDLLs) dramatically degrades the deterministic jitter performance. To overcome the issue, this paper presents a new SPO reduction technique for MDLLs. The technique is based on the observation that the SPO of MDLL is mainly caused by the non-idealities on charge pump (e.g. sink and source current mismatch), and control line (e.g. gate leakage of loop filter and voltage controlled delay line (VCDL) control circuit). With a high gain stage inserting between phase detector/phase frequency detector (PD/PFD) and charge pump, the equivalent SPO has been decreased by a factor equal to the gain of the gain stage. The effectiveness of the proposed technique is validated by a Simulink model of MDLL. The equivalent SPO is measured by the power level of reference spur.
 
Cite this paper
Wang, X. and Kwasniewski, T. (2015) A Static Phase Offset Reduction Technique for Multiplying Delay-Locked Loop. Circuits and Systems, 6, 13-19. doi: 10.4236/cs.2015.61002.
 
References
[1]Farjad-Rad, R., Dally, W., Ng, H.-T., Senthinathan, R., Lee, M.-J.E., Rathi, R. and Poulton, J. (2002) A Low-Power Multiplying DLL for Low-Jitter Multigigaherz Clock Generation. IEEE Journal of Solid State Circuit, 37, 1804-1811.
http://dx.doi.org/10.1109/JSSC.2002.804340
 
[2]Liu, C.-Y. and Chen, W.-Z. (2011) Spur Suppression Technique for Multiplied Delay Locked Loop. Proceedings of IEEE International Symposium on Radio Frequency Integration Technology (RFIT), 153-156.
 
[3]Du, Q.J., Zhuang, J.C. and Kwasniewski, T. (2006) A Low-Phase Noise, Anti-Harmonic Programmable DLL Frequency Multiplier with Period Error Compensation for Spur Reduction. IEEE Transactions on Circuits Systems II, 53, 1205-1209.
http://dx.doi.org/10.1109/TCSII.2006.883103
 
[4]Elshazly, A., Inti, R., Young, B. and Hanumolu, P.K. (2013) Clock Multiplication Techniques Using Digital Multiplying Delay-Locked Loops. IEEE Journal of Solid-State Circuits, 48, 1416-1428.
http://dx.doi.org/10.1109/JSSC.2013.2254552
 
[5]Helal, B.M.M., Straayer, Z., Wei, G.-Y. and Perrott, M.H. (2008) A Highly Digital MDLL-Based Frequency Multiplier That Leverages a Self-Scrambling Time-to-Digital Converter to Achieve Subpicosecond Jitter Performance. IEEE Journal of Solid-State Circuits, 43, 855-863.
http://dx.doi.org/10.1109/JSSC.2008.917372
 
[6]Ali, T.A., Hafez, A.A., Drost, R., Ho, R. and Yang, C.-K.K. (2011) A 4.6 GHz MDLL with -46 dBc Reference Spur and Aperture Position Tuning. ISSCC, Dig. Tech. Papers, 466-468.
 
[7]Marzin, G., Levantino, S., Samori, C. and Lacaita, A.L. (2014) A 1.7 GHz MDLL-Based Fractional-N Frequency Synthesizer with 1.4 ps RMS Integrated Jitter and 3 mW Power Using a 1b TDC. ISSCC, Dig. Tech. Papers, 360-362.
 
[8]Rhee, W. (1999) Design of High Performance CMOS Charge Pumps in Phase Locked Loop. Proceedings of IEEE International Symposium on Circuits and Systems (ISCAS), 1, 545-548.
 
[9]Fischette, D. (2009) First Time, Every Time Practical Tips for Phase Locked Loop Design.
http://www.delroy.com/PLL_dir/tutorial/PLL_tutorial_slides.pdf                                              eww150123lx
 
[10]Shu, K. and Sanchez-Sinencio, E. (2005) CMOS PLL Synthesizers: Analysis and Design. Springer, Berlin.
标签：

评论

发表评论

此博客中的热门博文

Does Immigration Promote the Investment of the Monopolistic Firm?

In the present paper, we examine the effect of increasing uncertainty of immigrants’ growth on the optimal timing of investment of a firm that has a monopolistic power over the labor market. It is revealed that when the uncertainty of immigrants’ growth is more than a threshold level, increasing uncertainty of immigrants’ growth accelerates the optimal timing of firms’ investment and enhances the economic growth, even if the uncertainty of immigrants’ growth is formulated by the geometric Brownian motion, which is in sharp contrast to the standard result that an increase in the uncertainty postpones the optimal timing. With an increase in the immigrants over the past ten years, workforces in the host countries have been growing significantly to the extent that the immigrants represent 70% of the increase in the workforce in Europe, and 47% in the United States as OECD indicates. In the present paper, we attempted to investigate the effect of increased uncertainty caused by the growi...
发表评论
阅读全文

Education Policy Implementation: A Mechanism for Enhancing Primary Education Development in Zanzibar

Education is one of the fundamental rights of individuals; therefore, the government of a country needs to develop and strengthen educational policy and quality as well as to ensure that everyone has equal access to basic education. The improvement of access and quality of education in the world is becoming as an essential factor in development, whereas the basic education (primary school), is acknowledged as a foundation of the higher educational development for every country. To fulfill this goal, governments introduce several policies and procedures; however, it requires some reforms and participation from the politician, policymakers, and other stakeholders to re-examine educational policy so that it can lead to multiplication and betterment of the reforms. Educational reforms actually focus on accountability. A positive educational development and reform is very challenging and needs more effort and strategy on how to use and utilize the resources effectively as such it can achie...
发表评论
阅读全文