Voltage-Follower Coupling Quadrature Oscillator with Embedded Phase-Interpolator in 16nm FinFET

High-speed serial links require a very high frequency clock source. Multi-rings oscillator is a practical solution to this challenge. A new phase-interpolator embedded quadrature oscillator was designed and tested. Voltage-follower based cross-coupling loops create reliable and tunable phase relatio...

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Bibliographic Details
Published in2019 IEEE Custom Integrated Circuits Conference (CICC) pp. 1 - 4
Main Authors Chen, Xi, Song, Sanquan, Poulton, John, Nedovic, Nikola, Zimmer, Brian, Tell, Stephen, Gray, C. Thomas
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.04.2019
Subjects
Clocks
Couplings
Cross-Coupling
Frequency measurement
High-Speed Serial Link
Oscillators
Phase Interpolator
Phase locked loops
Quadrature Oscillator
Topology
Tuning
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Summary:High-speed serial links require a very high frequency clock source. Multi-rings oscillator is a practical solution to this challenge. A new phase-interpolator embedded quadrature oscillator was designed and tested. Voltage-follower based cross-coupling loops create reliable and tunable phase relationship among OSC rings. The measurement results show that the proposed PI-OSC provides 1.25/0.97 LSB INL/DNL performance at 24GHz while consuming only 8.1mW power. This compact oscillator is suitable for clock generation in high-speed low-power links.
ISSN:2152-3630
DOI:10.1109/CICC.2019.8780309