Analysis of the effect of PFD sampling on charge-pump PLL stability

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

1 Citation (Scopus)

Abstract

The sampling nature of the phase-frequency detector (PFD) degrades the stability of the charge-pump phase-locked loop (CPPLL). This paper analyzes the effect of the PFD sampling on the CPPLL stability by using z-transform. The PFD is modeled as a zero-order hold to perform the z-domain analysis. The stability boundary predicted by the analysis is accurate and verified by simulations using Cadence Spectre. In addition, a physical interpretation of how sampling destabilizes an otherwise stable continuous feedback system is provided in time domain, which brings valuable insight into the operation of sampled feedback systems like CPPLL.

LanguageEnglish
Title of host publication2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018 - Proceedings
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers
Pages1-5
Number of pages5
Volume2018-May
ISBN (Electronic)978-1-5386-4881-0
ISBN (Print)978-1-5386-4882-7
DOIs
StatePublished - 26 Apr 2018
Event2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018 - Florence Conference Center, Florence, Italy
Duration: 27 May 201830 May 2018
https://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=8334884

Conference

Conference2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018
Abbreviated titleISCAS 2018
CountryItaly
CityFlorence
Period27/05/1830/05/18
Internet address

Fingerprint

Phase locked loops
Pumps
Sampling
Detectors
Feedback
Mathematical transformations

Keywords

  • Phase-frequency detector
  • phase-locked loop
  • sampling
  • zero-order hold

Cite this

Dhar, D., van Zeijl, P. T. M., Milosevic, D., Gao, H., & Baltus, P. G. M. (2018). Analysis of the effect of PFD sampling on charge-pump PLL stability. In 2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018 - Proceedings (Vol. 2018-May, pp. 1-5). [8351180] Piscataway: Institute of Electrical and Electronics Engineers. DOI: 10.1109/ISCAS.2018.8351180
Dhar, D. ; van Zeijl, P.T.M. ; Milosevic, D. ; Gao, H. ; Baltus, P.G.M./ Analysis of the effect of PFD sampling on charge-pump PLL stability. 2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018 - Proceedings. Vol. 2018-May Piscataway : Institute of Electrical and Electronics Engineers, 2018. pp. 1-5
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Dhar, D, van Zeijl, PTM, Milosevic, D, Gao, H & Baltus, PGM 2018, Analysis of the effect of PFD sampling on charge-pump PLL stability. in 2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018 - Proceedings. vol. 2018-May, 8351180, Institute of Electrical and Electronics Engineers, Piscataway, pp. 1-5, 2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018, Florence, Italy, 27/05/18. DOI: 10.1109/ISCAS.2018.8351180

Analysis of the effect of PFD sampling on charge-pump PLL stability. / Dhar, D.; van Zeijl, P.T.M. ; Milosevic, D.; Gao, H.; Baltus, P.G.M.

2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018 - Proceedings. Vol. 2018-May Piscataway : Institute of Electrical and Electronics Engineers, 2018. p. 1-5 8351180.

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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Dhar D, van Zeijl PTM, Milosevic D, Gao H, Baltus PGM. Analysis of the effect of PFD sampling on charge-pump PLL stability. In 2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018 - Proceedings. Vol. 2018-May. Piscataway: Institute of Electrical and Electronics Engineers. 2018. p. 1-5. 8351180. Available from, DOI: 10.1109/ISCAS.2018.8351180