A Robust 43-GHz VCO in CMOS for OC-768 SONET Applications

Wel van der, Arnoud P. and Gierink, Sander L.J. and Frye, Robert C. and Boccuzzi, Vito and Nauta, Bram (2004) A Robust 43-GHz VCO in CMOS for OC-768 SONET Applications. IEEE Journal of Solid-State Circuits, 29 (7). pp. 1159-1163. ISSN 0018-9200

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Abstract:	In this paper, we present a 43-GHz LC-VCO in 0.13-/spl mu/m CMOS for use in SONET OC-768 optical networks. A tuned output buffer is used to provide 1.3 V/sub p-p/ (single-ended) into a 90-fF capacitive load as is required when the VCO is used in typical clock and data recovery (CDR) circuits. Phase noise is -90 dBc/Hz at a 1-MHz offset from the carrier; this meets SONET jitter specifications. The design has a tune range of 4.2%. The VCO, including output buffers, consumes 14 mA from a 1-V supply and occupies 0.06 mm/sup 2/ of die area. Modern CMOS process characteristics and the high center frequency of this design mean that the tank loss is not dominated by the integrated inductor, but rather by the tank capacitance. An area-efficient inductor design that does not require any optimization is used.
Item Type:	Article
Copyright:	© 2004 IEEE
Faculty:	Electrical Engineering, Mathematics and Computer Science (EEMCS)
Research Group:	Integrated Circuit Design (ICD)
Link to this item:	http://purl.utwente.nl/publications/48806
Official URL:	http://dx.doi.org/10.1109/JSSC.2004.829970
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