Summary
International Symposium on Electromagnetic Compatibility
2009
Session Number:22Q3
Session:
Number:22Q3-3
Analysis of DLL Jitter Affected by Power Supply Noise on Power Distribution Network
M. Shin,
pp.421-424
Publication Date:2009/7/20
Online ISSN:2188-5079
Summary:
In this paper, we analyze a noise-to-jitter transfer function on DLL (Delay Locked Loop) considering power supply noise effects on PDN (Power Distribution Network). Noise-to-jitter transfer function of DLL circuit can be estimated by using single-tone power supply noise analysis. Noise transfer function through the PDN can be obtained from transfer impedance of hierarchical PDN using TLM (Transmission Line Matrix) method and 2.5D PCB simulator. Therefore, the power supply noise-to-jitter transfer function considering PDN effect can be acquired to combine the two previous transfer functions. Finally, we can verify the methods to reduce peak value of jitter transfer function using an optimized bias filter capacitor in DLL circuit and designed low inductance of hierarchical PDN.