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Erschienen in: Microsystem Technologies 1/2018

22.11.2016 | Technical Paper

A fast-lock and low-power DLL-based clock generator applied for DDR4

verfasst von: Yu-Lung Lo, Wei-Bin Yang, Han-Hsien Wang, Cing-Huan Chen, Zi-Ang Huang

Erschienen in: Microsystem Technologies | Ausgabe 1/2018

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Abstract

This paper presents a fast-lock and low-power delay-locked loop (DLL) circuit applied for DDR4. The proposed modified phase detector and modified charge pump can reduce locking time as well as static phase error. The glitch elimination circuit reduces glitches in the PD for reducing the glitch power. The phase interpolator and phase combiner circuit are used to generate four output frequencies: 0.2, 0.4, 0.8, and 1.6 GHz. The design is fabricated through a 0.18-μm standard CMOS process with a supply voltage of 1.8 V. The simulation results indicate that the lock time is less than 20 cycles and the power consumption of the DLL is 15.14 mW at 1.6 GHz. The active die area of the proposed DLL-based clock generator is 0.51 mm2.

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Literatur
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Zurück zum Zitat Yang WB, Wang CH, Hsu KH, Wang HH, Lin YY (2015) A new multiple frequency out of DLL with Glitch Elimination and Phase Interpolator for DDR4. International Conference on Electronics, Information and Communication, Grand Hyatt, Singapore, pp 310–313 Yang WB, Wang CH, Hsu KH, Wang HH, Lin YY (2015) A new multiple frequency out of DLL with Glitch Elimination and Phase Interpolator for DDR4. International Conference on Electronics, Information and Communication, Grand Hyatt, Singapore, pp 310–313
Metadaten
Titel
A fast-lock and low-power DLL-based clock generator applied for DDR4
verfasst von
Yu-Lung Lo
Wei-Bin Yang
Han-Hsien Wang
Cing-Huan Chen
Zi-Ang Huang
Publikationsdatum
22.11.2016
Verlag
Springer Berlin Heidelberg
Erschienen in
Microsystem Technologies / Ausgabe 1/2018
Print ISSN: 0946-7076
Elektronische ISSN: 1432-1858
DOI
https://doi.org/10.1007/s00542-016-3206-7

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