A 0.45 pJ/b 24 Gb/s NRZ Receiver Data-Path Using Half-Baud-Rate Duobinary Sampling

Seungwoo Park, Yoonjae Choi, Jonghyuck Choi, Jincheol Sim, Youngwook Kwon, Changmin Sim, Seongcheol Kim, Chulwoo Kim

Research output: Contribution to journalArticlepeer-review


This brief presents a 24 Gb/s NRZ receiver. To achieve an energy-efficient receiver, duobinary sampling with half-baud-rate operation is proposed. The duobinary sampling reduces the power consumption of an analog front-end (AFE) by reducing the required bandwidth of the AFE from conventional NRZ Nyquist frequency, fb/2, to fb/3. The two decoding blocks operate at a half-baud-rate using only a 6 GHz differential clock. Therefore, additional clocking power for the four-phase generation and distribution is saved. The prototype chip was fabricated in a 28 nm CMOS process and occupied an active area of 0.0021mm2. The data rate of 24 Gb/s is achieved with a channel loss of 17.1 dB at 12 GHz. The power consumption was measured to be 10.8 mW, exhibiting an energy efficiency of 0.45 pJ/b.

Original languageEnglish
Pages (from-to)1
Number of pages1
JournalIEEE Transactions on Circuits and Systems II: Express Briefs
Publication statusAccepted/In press - 2024

Bibliographical note

Publisher Copyright:


  • Analog front-end (AFE)
  • Bandwidth
  • Clocks
  • continuous-time linear equalizer (CTLE)
  • Decoding
  • duobinary
  • Energy efficiency
  • half-baud-rate
  • integrator
  • Optical signal processing
  • Receivers
  • Voltage

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


Dive into the research topics of 'A 0.45 pJ/b 24 Gb/s NRZ Receiver Data-Path Using Half-Baud-Rate Duobinary Sampling'. Together they form a unique fingerprint.

Cite this