FiberEdge® Linear Vertical-Cavity Surface-Emitting Laser (VCSEL) Driver for 400G and 800G Data Centers

Semtech Releases FiberEdge® Linear Vertical-Cavity Surface-Emitting Laser (VCSEL) Driver for 400G and 800G Data Centers

The GN1848 is a quad 56GBd PAM4 VCSEL driver offering best-in-class performance and low cost for short-reach optical links

BASEL, Switzerland at ECOC 2022, Sept. 19, 2022 Semtech Corporation (Nasdaq: SMTC), a leading global supplier of high performance analog and mixed-signal semiconductors and advanced algorithms, announced the immediate availability of the GN1848, a new addition to the FiberEdge® platform of PAM4 chipsets.

“The high performance and low cost required by our customers in high-speed short reach multimode and active copper cable (AOC) applications can now be achieved with the FiberEdge GN1848 VCSEL driver, coupled with our newly introduced FiberEdge GN1816 transimpedance amplifier (TIA),” said Nicola Bramante, senior product line manager for Semtech’s Signal Integrity Products Group. “The interoperability of Semtech’s FiberEdge multimode chipset extends the well-established FiberEdge portfolio and enables high-speed optical manufacturers to quickly and more easily develop industry-leading and low-cost optical modules.”

The FiberEdge GN1848 is a 56GBd quad low power, low cost, low noise and industry leading linear VCSEL driver with programmable bias and modulation currents, enabling interoperability with multiple VCSELs. The FiberEdge GN1848 is designed for 400GBASE-SR4/VR4 and 800GBASE-SR8/VR8 PAM4 multimode optical transceivers and active optical cables (AOC).

The FiberEdge GN1848 is sampling now as wire-bondable bare die, allowing direct wire bonding to a quad channel 250μm pitch VCSEL without the need of a bias tee.

Semtech’s FiberEdge platform includes:

  • GN1089: Single Channel 56GBd PAM4 Linear TIA
  • GN1089SC2: Single Channel 28GBd PAM4 Linear TIA
  • GN1800: Second Generation Single Channel 56GBd PAM4 Linear TIA
  • GN1800SC2: Second Generation Single Channel 28GBd PAM4 Linear TIA
  • GN1700: 50Gbps PAM Linear TIA for 5G Wireless
  • GN1810: Quad 56GBd PAM4 Linear TIA
  • GN1812: Second Generation Quad 56GBd PAM4 Linear TIA
  • GN1814: 500μm Pitch Quad 56GBd PAM4 Linear TIA
  • New– GN1816: 250um Pitch Quad 56GBd PAM4 Linear TIA
  • New– GN1848: Quad 56GBd PAM4 Linear VCSEL Driver
  • GN1862: Single Channel 56GBd PAM4 Linear EML Driver

The FiberEdge GN1816 will be demonstrated at the Semtech booth #322 during the European Conference on Optical Communication (ECOC) 2022, Sept. 18-22, in Basel, Switzerland. Register here.

Learn more about Semtech’s FiberEdge portfolio here.

About Semtech’s Optical Products

Semtech’s optical networking product platforms provide high-performance signal integrity for optical module solutions used by leading companies in the data center/enterprise networking, wireless infrastructure and passive optical network/Fiber to the X markets. For more information, visit

About Semtech

Semtech Corporation is a leading supplier of high performance analog and mixed-signal semiconductors and advanced algorithms for high-end consumer, enterprise computing, communications, and industrial equipment. Products are designed to benefit the engineering community as well as the global community. The Company is dedicated to reducing the impact it, and its products, have on the environment. Internal green programs seek to reduce waste through material and manufacturing control, use of green technology and designing for resource reduction. Publicly traded since 1967, Semtech is listed on the Nasdaq Global Select Market under the symbol SMTC. For more information, visit

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