100-Gb/s 2/sup 7/-1 and 54-Gb/s 2/sup 11/-1 PRBS generators in SiGe bipolar technology
- 12 September 2005
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Journal of Solid-State Circuits
- Vol. 40 (10) , 2118-2125
- https://doi.org/10.1109/jssc.2005.854597
Abstract
This paper presents two monolithic pseudorandom bit sequence (PRBS) generators. One circuit uses a seven-stage shift register operating with a half-rate clock and provides output signals up to 100 Gb/s. The second circuit contains an eleven-stage shift register operating with a full-rate clock up to 54 Gb/s. Both PRBS generators provide a wide range of data rates down to below 1 Gb/s simply by changing the frequency of the external clock signal without the need of any further adjustments. The integrated circuits provide a trigger output which can be switched between eye and pattern display. Furthermore, they contain additional circuitry to guarantee automatic start after power-on. The circuits are manufactured in a 200-GHz f/sub T/ SiGe bipolar technology. They each have a chip size of 900/spl times/700 /spl mu/m/sup 2/ and consume 1.5 and 1.9 W, respectively.Keywords
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