TIDA-00427 Reference Design

Texas Instruments

2-port 100GbE/40GbE/10GbE QSFP28 Signal Conditioner Reference Design


This verified reference design is a signal conditioning solution for front-port QSFP28 supporting two 100GbE ports compatible with 100G-CR4/SR4/LR4: 40G-CR4/SR4/LR4 and 10G SFF-8431 requirements. The design is applicable to optical and passive/active copper cables. It allows for reach extension between the Switch ASIC and the front-port QSFP28 which is often required for the outermost ports of a Top-of-Rack (ToR) switch or for add-in mezzanine implementations of QSFP28 line cards. This reference design offers the flexibility for users to upgrade from a DS280BR810 Repeater to the pin-compatible DS250DF810 Retimer.

  • Front-port stacked QSFP28 implementation with signal conditioning to support 100GbE/40GbE/10GbE optical and passive copperExtends reach between Switch and front-port by up to 3x beyond CAUI-4 host channel loss limitLow-power/low-cost solution for front-port signal conditioningApplicable to Top-of-Rack (ToR) switch and line card systemsSingle power supply: no firmware required: no heatsink required: no reference clock requiredLab-tested HW example including 100GbE/40GbE/10GbE-specific test data
  • Baseband unit (BBU)
  • Small cell base station
  • Aircraft cockpit display
  • In-flight entertainment
  • Edge router
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  • Performance client
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  • Outdoor backhaul unit
  • Active antenna system mMIMO (AAS)
  • Power analyzer
  • DC power supply
  • AC source
  • electronic load
  • Production switchers & mixers for broadcast
  • Indoor backhaul
  • Campus & branch switches
  • Cell site gateway router
  • Multi-access edge computing (MEC)
  • Circuit breaker (ACB
  • MCCB
  • VCB)
  • Data center switch
  • Macro remote radio unit (RRU)
Product Categories
  • Interface


Part Number Name Companion Part
MSP430F5529 MSP430F5529 Buy Datasheet
TPD4E004 TPD4E004 Buy Datasheet
TPS75725 TPS75725 Datasheet

Bill Of Materials

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