Semtech Introduces RF Transceiver IC's with Laser Driver for 5G Wireless Applications

Semtech, a leading supplier of high-performance analog and mixed-signal semiconductors and advanced algorithms, announced immediate sampling of Semtech’s industry-leading ClearEdge Clock and Data Recovery (CDR) platform. The bi-directional ClearEdge CDR integrates a single-ended EML laser driver optimized to enable the use of alternative optics for 5G wireless solutions and offers the lowest power and smallest package size for SFP28 LAN-WDM (LWDM) optical modules.

5G wireless front haul infrastructure requires a combination of optical modules with requirements changing based on regional differences, deployment area considerations, and carrier preferences. In regions where it is typically difficult to install fiber more readily or reduce overhead costs, carriers are increasingly introducing new “colored” optical modules that send and receive multiple wavelengths on a single fiber. One common type of colored optical module is the LWDM, offering a balance of cost, power, and many wavelengths supported. However, key challenges in LWDM module deployments include high cost, high power, and lack of integration in the IC.

Semtech’s ClearEdge CDR and FiberEdge PMD platform for 5G wireless applications include:

25G SFP28 300m LR-lite, LR 10km, BiDi, CWDM, MWDM optical modules: 

  • GN2152: Bi-directional 24-28G ClearEdge CDR with Integrated DML driver.
  • GN1086: Next-generation 24-28G FiberEdge TIA. 

25G SFP28 LWDM optical modules:

  • GN2154: Bi-directional 24-28G ClearEdge CDR with Integrated SE EML driver.
  • GN1086: Next-generation 24-28G FiberEdge TIA.

25G SFP28 DWDM, Tunable optical modules:

  • GN2146: Bi-directional 24-28G ClearEdge CDR with Integrated EML / MZM driver.
  • GN1086: Next-generation 24-28G FiberEdge TIA.

Semtech’s ClearEdge (GN2154) IC enables industry-leading performance in LWDM modules with low-cost EML lasers while offering ultra-low-power of 550mW typical (with 1.85VppSE driver swing) in a small 3.24mm x 2.05mm WLCSP package. GN2154 also offers advanced features such as RSSI and OMA LOS support, internal loopback, industrial temperature support, and Semtech’s proprietary eye-shaping features for maximizing performance.

GN2154 is available for immediate sampling with mass production expected in December 2020. Semtech also plans to provide customers with a complete Reference Design Kit (RDK) to minimize time-to-market.


  • Country: United States
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