ECOC 2022: Semtech debuts 50G PAM4 CDR receiver for data centre apps

Created September 19, 2022
Technologies and Products

Semtech Corporation has announced initial production availability of GN2559S, its low power Tri-Edge™ CDR receiver at ECOC 2022. The TriEdge GN2559S is a next generation Tri-Edge PAM4 receiver with quad PAM4 CDRs and integrated linear transimpedance amplifiers, for 200G and 400G data centre applications. The company says it offers ultra-low power and low latency receiver performance that meets the needs of high-performance computing, artificial intelligence and cloud data centre networks over short-reach and long-reach optical links.

“The initial production availability of the next generation Tri-Edge GN2559S receiver is moving the needle for the strong and fast growing PAM4 data centre market. Building upon the Tri-Edge PAM4 SR CDR chipset, which was successfully developed for major Cloud data centres, the GN2559S will offer more power saving and enhanced receiver performance,” said Tim Vang, vice president, marketing and applications for Semtech’s Signal Integrity Products Group. “With 400mW power reduction from the previous generation receiver, the GN2559S enables industry best in class power consumption for both SR and LR data centre optical interconnects.”

Semtech’s data centre Tri-Edge CDR portfolio includes:

  • GN2559S: PAM4 4x56G CDR + TIA
  • GN2558: PAM4 4x56G CDR + VCSEL Driver
  • GN2559: PAM4 4x56G CDR + TIA
  • GN2538: PAM4 2x56G CDR + VCSEL Driver
  • GN2539: PAM4 2x56G CDR + TIA
  • GN2555: Quad PAM4 4x56G CDR + DML Driver
  • GN2559: Quad PAM4 4x56G CDR + TIA

The GN2559S is now in initial production and Semtech will also offer a complete Reference Design Kit for SR and LR applications to enable rapid adoption of Semtech’s solution.

For more information, visit


This article was written
by Peter Dykes

Peter Dykes is a independent telecoms and technology journalist who has over that last 30 years written for a wide range of B2B publications and companies. A former BT engineer, he specialises in networks and associated support systems. He is currently Editor of Optical Connections.