A 50 Gbit/s PAM-4 linear burst-mode transimpedance amplifier

Gertjan Coudyzer (Corresponding author), Peter Ossieur, Laurens Breyne, Marion Matters, Johan Bauwelinck, Xin Yin

Research output: Contribution to journalArticleAcademicpeer-review

17 Citations (Scopus)


This letter presents a linear burst-mode transimpedance amplifier (LBMTIA) capable of receiving 50 Gbit/s 4-level pulse amplitude modulation (PAM-4), targeting upstream transmission in high-rate time division multiplexed passive optical networks (TDM-PONs). Using a digitally controlled high-speed datapath, where offset- and gain are corrected using a fast lookup from on-chip stored settings, the receiver achieves a settling time of 48 ns and has an input dynamic range of at least 17.7 dB for 25 Gbit/s non-return-to-zero (NRZ) and 10.9 dB for 50 Gbit/s PAM-4 at the low-density-parity-check (LDPC) forward-error-control (FEC) threshold of 1 × 10-2 (as now standardized for 25 and 50G TDM-PONs). The LBMTIA is fabricated in the 0.25 um SiGe:C BiCMOS-technology from NXP and consumes 375 mW.

Original languageEnglish
Article number8704297
Pages (from-to)951-954
Number of pages4
JournalIEEE Photonics Technology Letters
Issue number12
Publication statusPublished - 15 Jun 2019


  • Burst-mode
  • transimpedance amplifiers
  • 4-level pulse amplitude modulation
  • passive optical networks
  • access networks


Dive into the research topics of 'A 50 Gbit/s PAM-4 linear burst-mode transimpedance amplifier'. Together they form a unique fingerprint.

Cite this