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Choi, Jaehyouk
Integrated Circuits and Systems Lab (ICSL)
Research Interests
  • RF/Analog/Mixed IC design, low power CMOS IC, wired/wireless TRX IC, clock generation IC

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A Low Power and Wide Range Programmable Clock Generator With a High Multiplication Factor

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Title
A Low Power and Wide Range Programmable Clock Generator With a High Multiplication Factor
Author
Choi, JaehyoukKim, Stephen T.Kim, WoonyunKim, Kwan-WooLim, KyutaeLaskar, Joy
Keywords
Clock generator; delay cell; delay locked loop (DLL); multiplication factor; programmable
Issue Date
2011-04
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Citation
IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS, v.19, no.4, pp.701 - 705
Abstract
A programmable delay locked loop (DLL) based clock generator, providing a high multiplication factor, has been developed in a 0.18-μm CMOS technology. Utilizing the proposed pulse generator, purely consisting of D flip flops (DFFs) and inverters, the clock generator provides a high multiplication factor of up to 24. It consumes only 16.2 mW when generating 2.16 GHz output signals. In addition, the proposed saturated-type unit delay cell adopted in the voltage controlled delay line (VCDL) is capable of providing a long delay while maintaining fast-switching signal edges. Thus, the DLL can lock up an input reference frequency as low as 30 MHz while maintaining good phase noise performance and small chip area occupancy. The phase noise is - 88.7 and - 99.8 dBc/Hz at 10 kHz and 100 kHz offsets, respectively, from the operating frequency of 1.2 GHz, which is equivalent to a 1.7 ps RMS jitter. The active chip area takes only 0.051 mm2.
URI
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DOI
10.1109/TVLSI.2009.2036433
ISSN
1063-8210
Appears in Collections:
EE_Journal Papers
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