Semtech unveils 50G PAM4 Tri-Edge CDR for 5G front haul

Feb. 25, 2021
The bidirectional device with integrated DML driver targets 50-Gbps PAM4 optical transceivers for 5G front-haul applications and enables small footprint, low power, ultra-low latency, and high performance, the company asserts.

Semtech Corp. (Nasdaq: SMTC) says it is sampling the GN2255 Tri-Edge CDR. The bidirectional device with integrated DML driver targets 50-Gbps PAM4 optical transceivers for 5G front-haul applications and enables small footprint, low power, ultra-low latency, and high performance, the company asserts. Semtech says it also will supply a complete reference design kit (RDK), including complete module-level firmware, to accompany the CDR IC.

The GN2255 leverages Semtech’s proprietary analog Tri-Edge technology as well as what Semtech calls “enhanced laser driver compensation” in support of IEEE-compliant optical transceivers that operate over industrial temperature ranges. It enables less than 1.5 W module power and up to 10-km reach for 50Gbps PAM4 SFP56 optical modules. The Tri-Edge technology and proprietary DML compensation will enable use of 25G optics to operate at 50G PAM4, Semtech adds.

“Semtech is at the forefront of innovation with this new Tri-Edge IC and we look forward to collaborating with system vendors and our optical module partners to enable next-generation 5G wireless front-haul deployments,” said Raza Khan, Senior Market Manager for Semtech’s Signal Integrity Products Group.

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