A 40-Gb/s 211-1 PRBS with Distributed Clocking and a Trigger Countdown Output

Leonardo Vera Villarroel, John Long

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)


A 211-1 pseudo-random binary sequence (PRBS) generator with trigger synchronization output (9.77-MHz rate) is implemented using synthetic transmission lines for the clock distribution. The full-rate data sequence is sourced from a 2:1 multiplex of dual shift register outputs synchronized to a half-rate clock. Quadrature half-rate clocks generated by a dual-mode (Dynastat) divide-by-2 are distributed via the synthetic lines to optimize power-speed tradeoffs in the design. The 790×620μm2 PRBS designed in 130-nm SiGe BiCMOS (200/280 GHz fT/fmax) consumes 250 mA at 2.5 V (i.e., 625 mW).

Original languageEnglish
Article number7410032
Pages (from-to)758-762
Number of pages5
JournalIEEE Transactions on Circuits and Systems Part 2: Express Briefs
Issue number8
Publication statusPublished - 1 Aug 2016


  • Dynastat frequency divider
  • pseudo-random binary sequence (PRBS) generator
  • SiGe heterojunction bipolar transistor (HBT)
  • SiGe-BiCMOS technology
  • synthetic transmission line
  • trigger generator

Fingerprint Dive into the research topics of 'A 40-Gb/s 2<sup>11</sup>-1 PRBS with Distributed Clocking and a Trigger Countdown Output'. Together they form a unique fingerprint.

Cite this