A 5Gbps 0.13μm CMOS pilot-based clock and data recovery scheme for high-speed links

Mahmoud Reza Ahmadi, Amir Amirkhany, Ramesh Harjani

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

1 Scopus citations

Abstract

This paper presents a pilot-based clock and data recovery CDR technique for high-speed serial link applications where a low-amplitude bitrate clock signal, i.e., a pilot, is added to the transmit signal. The clock tone is extracted at the receiver using an injection locked oscillator and is used to drive the receiver front-end samplers. The performance of the CDR technique is demonstrated using a 5Gbps differential link fabricated in a 0.13μm IBM CMOS technology. The designed clock and data recovery circuit has an area of 0.171mm2 and consumes 11.75mA from a 1.5V supply voltage at 5Gbps. The recovered clock peak-peak and rms jitter at 5Gbps are less than 10ps (5%UI) and 1.6ps (0.8%UI) respectively with a loop bandwidth of approximately 28MHz. The proposed technique simplifies the CDR design and provides data and inter-symbol interference (ISI) independent performance with a small ≈5% pilot voltage overhead to the transmit signal.

Original languageEnglish (US)
Title of host publication2009 IEEE Custom Integrated Circuits Conference, CICC '09
Pages125-128
Number of pages4
DOIs
StatePublished - Dec 1 2009
Event2009 IEEE Custom Integrated Circuits Conference, CICC '09 - San Jose, CA, United States
Duration: Sep 13 2009Sep 16 2009

Publication series

NameProceedings of the Custom Integrated Circuits Conference
ISSN (Print)0886-5930

Other

Other2009 IEEE Custom Integrated Circuits Conference, CICC '09
CountryUnited States
CitySan Jose, CA
Period9/13/099/16/09

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Ahmadi, M. R., Amirkhany, A., & Harjani, R. (2009). A 5Gbps 0.13μm CMOS pilot-based clock and data recovery scheme for high-speed links. In 2009 IEEE Custom Integrated Circuits Conference, CICC '09 (pp. 125-128). [5280900] (Proceedings of the Custom Integrated Circuits Conference). https://doi.org/10.1109/CICC.2009.5280900