A fully integrated 40-Gb/s clock and data recovery IC with 1:4DEMUX in SiGe technology |
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Authors: | Reinhold M. Dorschky C. Rose E. Pullela R. Mayer P. Kunz F. Baeyens Y. Link T. Mattia J.-P. |
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Affiliation: | Opt. Networking Group, Lucent Technol., Nurnberg ; |
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Abstract: | In this paper, a fully integrated 40-Gb/s clock and data recovery (CDR) IC with additional 1:4 demultiplexer (DEMUX) functionality is presented. The IC is implemented in a state-of-the-art production SiGe process. Its phase-locked-loop-based architecture with bang-bang-type phase detector (PD) provides maximum robustness. To the authors' best knowledge, it is the first 40-Gb/s CDR IC fabricated in a SiGe heterojunction bipolar technology (HBT). The measurement results demonstrate an input sensitivity of 42-mV single-ended data input swing at a bit-error rate (BER) of 10-10. As demonstrated in optical transmission experiments with the IC embedded in a 40-Gb/s link, the CDR/DEMUX shows complete functionality as a single-chip-receiver IC. A BER of 10-10 requires an optical signal-to-noise ratio of 23.3 dB |
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