A fast-locking DLL-based frequency multiplier for wide-range operation

Chien-Hung Kuo*, Ching Shan Chien, Meng Feng Lin, Yen Cheng Tsai

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, a fast-locking delay-locked loop (DLL)-based frequency multiplier for wide-range operation is proposed. A programmable charging circuit (PCC) to the loop filter is developed to accelerate the locking time of DLL. In the presented DLL, the pseudo-differential delay cell is adopted in the voltage-controlled delay line (VCDL) for the suppression of the common-mode noise. Five clock cycles of the least lock time can be reached in the presented DLL. A new DLL-based frequency multiplier with less active devices is also proposed to promote the operating frequency range from 200 MHz to 2.1 GHz. The simulated cycle-to-cycle jitter of the DLL is 31 ps at 320 MHz of the reference input. The prototype circuit has been fabricated in a 0.18 μm 1P6M CMOS technology. The core area excluding PADs is 0.36×0.37 mm2. The power consumption of the proposed DLL is 24 mW from a 1.8 V of supply voltage.

Original languageEnglish
Title of host publicationProceedings of the Fifth IASTED International Conference on Circuits, Signals, and Systems, CSS 2007
Pages105-110
Number of pages6
Publication statusPublished - 2007 Dec 1
Event5th IASTED International Conference on Circuits, Signals, and Systems, CSS 2007 - Banff, AB, Canada
Duration: 2007 Jul 22007 Jul 4

Publication series

NameProceedings of the Fifth IASTED International Conference on Circuits, Signals, and Systems, CSS 2007

Other

Other5th IASTED International Conference on Circuits, Signals, and Systems, CSS 2007
Country/TerritoryCanada
CityBanff, AB
Period2007/07/022007/07/04

Keywords

  • Clock generator
  • Delay-locked loops (DLLs)
  • Fast-locking DLL
  • Frequency multiplier
  • Programmable charging circuit (PCC)

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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