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A Delay Locked Loop Circuit with Mixed Mode Phase Tuning Technique

Yeo-San SONG, Jin-Ku KANG, Kwang Sub YOON

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Summary :

This paper describes a DLL (Delay Locked Loop) circuit with the mixed-mode phase tuning method. The circuit accomplishes unlimited phase shift and accurate phase alignment through the coarse and fine phase tuning technique. It is based on a dual delay locked loop structure. The main loop is for generating coarsely spaced clocks and the second loop is for fast and accurate phase tuning with digital and analog phase detection. Simulations show that this circuit has 360 degree phase shift capability and can resolve 10 ps phase error using 0.6 µm CMOS technology.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E83-A No.9 pp.1860-1861
Publication Date
2000/09/25
Publicized
Online ISSN
DOI
Type of Manuscript
LETTER
Category
Analog Signal Processing

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