Twinax Flyover System Optimization

Samtec’s high-speed ultra low skew twinax cable technology is designed specifically for the smallest, most dense 28 Gbps performance systems. Twinax flyovers enable maximum density, while meeting the signal integrity data rate requirements of today, and beyond.

ADVANCED INTERCONNECT DESIGN

Future-proof designs optimize performance now + beyond.

Data “flies” over the PCB, simplifying layout & enhancing signal integrity

Data “flies” over the PCB, simplifying layout & enhancing signal integrity

Future-proof designs for easy migration to optical systems

Future-proof designs for easy migration to optical systems

Micro footprint designs for ultra high-density systems

Micro footprint designs for ultra high-density systems

Rugged, two-piece connector system supports 28 Gbps data rates

Rugged, two-piece connector system supports 28 Gbps data rates

HIGH-SPEED CABLE PLANT

In-house R&D / manufacturing of high-speed cable systems.

Precision extruded micro coax and twinax cables

Precision extruded micro coax and twinax cables

Extreme flexibility for high-speed / high-density cable design

Extreme flexibility for high-speed / high-density cable design

Full system signal integrity analysis and optimization

Full system signal integrity analysis and optimization

Co-extruded twinax provides ultra low skew advantage

Co-extruded twinax provides ultra low skew advantage

PRACTICAL APPLICATIONS

Significantly reduce complex routing challenges of 28+ Gbps systems with the incorporation of flyover designs.

Demands for increased signal reach and density at speeds of 28+ Gbps have made high-speed signal routing, and finding the optimal way to get from “Point A” to “Point B,” a complex and often seemingly impossible task.

Not only can Samtec assist with complex PCB layout and routing recommendations via Samtec Teraspeed Consulting and our Signal Integrity Group, we can help significantly reduce or eliminate these challenges by combining our revolutionary flyover technology with unique interconnect solutions designed for high-speed, high-density applications.

BACKSIDE INTERCONNECT ULTRA HIGH-SPEED LOW SKEW TWINAX FABRIC

Customized assemblies leverage Samtec’s 28 Gbps ultra micro interposers and ultra low skew twinax cable flyovers, and take advantage of real estate on the bottom side of the PCB to distribute critical data to multiple locations on the board, eliminating complex signal routing.

  • Interconnect system: Z-Ray® ultra high- density, ultra low profile micro interposers
  • High-speed cabling: Eye Speed® ultra low skew twinax cable
  • BGA-to-BGA high-speed signal "flyover"
  • Customizable selective signal mapping
ZRDP Application
DCC SM Application
Flyover systems extend signal reach by routing signals via ultra low skew twinax cable rather than through the PCB.

SURFACE MOUNT DIRECT ATTACH FLYOVER APPLICATION

Samtec’s flyover concept can help extend signal reach and density by taking advantage of the benefits of routing signals via ultra low skew twinax cable versus through the PCB.

  • Ultra low skew Eye Speed® twinax cable is directly soldered to the high-performance chassis card
  • Extended reach compared to PCB trace routing enables flexibility of module placement
  • Chip-to-chip data transmission
  • Simplifies PCB routing

Contact sig@samtec.com to discuss solutions for your specific routing challenges.

HIGH-SPEED TWINAX FLYOVER SYSTEMS

FIREFLY™ COAX & TWINAX FLYOVERS

  • Performance up to 28 Gbps
  • x12 systems on 36 AWG ultralow skew twinax ribbon cable
  • x4 bidirectional system with passive equalized 34 AWG ultralow skew twinax ribbon cable provides a performance boost or enables longer cable lengths
  • x4 bidirectional system (in development) with active equalized 100 Ω 34 AWG ultra low skew twinax ribbon cable provides greater performance boost or enables even longer cable lengths and offers relatively low power consumption
  • Pin compatible with optical FireFly™

DIRECT ATTACH FLYOVER QSFP SYSTEM

  • Addresses the large loss issues associated with the circuit card PCB traces in 28 Gbps QSFP systems
  • Allows the receiver to be remotely located, providing more flexibility in system architecture and more control over thermal cooling
  • 28 Gbps high-speed performance
  • No re-timers are required resulting in reduced costs and power consumption
  • Reduced PCB costs due to lower layer count sand increased material options
  • High-speed signals via Eye Speed® 30 AWG 100 Ω ultra low skew twinax cable enables inherently lower attenuation
  • Backward compatible with all QSFP cable assemblies
  • Variety of end two options available
Firefly™ Copper Systems
Firefly™ Connector System
Equalized Twinax Firefly™
Standard Twinax Firefly™
FQSP on Board
Ultra Low Skew Twinax Cable
Low Speed / Power Via Press-Fit Tails
30 AWG 100 Ω 32 AWG 100 Ω 34 AWG 100 Ω 36 AWG 100 Ω
Eye Speed® Ultra Low Skew Twinax Cable 30 AWG 100 Ω 32 AWG 100 Ω 34 AWG 100 Ω 36 AWG 100 Ω
Performance (Gbps) IL -3dB
0.25 m
36 28 28 27.4
Performance (Gbps) IL -3dB
1.00 m
10 8 5 3.4
Density / Flexibility Good Better Best Best
Samtec Assemblies (Series) FQSFP, DCC 2.0 DCC, HDLSP, EPLSP, SEAC ZRDP, ECUE (x4) ECUE (x12), Flyunder DCC

Z-RAY® ULTRA LOW PROFILE HIGH-SPEED CABLE ASSEMBLY

  • 0.80 mm pitch micro interposer
  • 8 or 16 high-speed differential pairs
  • Eye Speed® 100 Ω 34 AWG ultra low skew twinax ribbon cable
  • Designed for high-speed, high-density, micro pitch applications
  • Overall profile < 4.00 mm
  • Performance up to 28 Gbps

DIRECT CONNECT CABLE SYSTEMS

  • Cost-effective ultra low skew twinax cable solution
  • 2.00 mm (.0787") pitch
  • Eye Speed® 100 Ω 32 AWG ultra low skew twinax cable
  • Stitched ground pins for improved signal integrity and easy routing
  • High retention, low cost, one-time press-fit termination directly to the PCB
  • Performance meets SAS-4, PCIe® Gen 4 and beyond
  • Choice of End 2 options for increased design flexibility
Ultra High-Density 0.80 mm Pitch
High Reliability Press-Fit Tails

TECHNOLOGY ROADMAP | TWINAX FLYOVER SYSTEMS

x4 and x12 twinax with up to 28 Gbps performance

x4 and x12 twinax with up to 28 Gbps performance

x4 and x12 with passive or active equalization

x4 and x12 with passive or active equalization

Press-fit cable to Mini SAS HD with 4 bidirectional channels to 12 Gbps

Press-fit cable to Mini SAS HD with 4 bidirectional channels to 12 Gbps

26+ Gbps high-density, space-saving assembly

26+ Gbps high-density, space-saving assembly

28+ Gbps Direct Connect Cable meets SAS-4, PCIe® Gen 4 & beyond

28+ Gbps Direct Connect Cable meets SAS-4, PCIe® Gen 4 & beyond

32+ Gbps designed for chip-to-chip high-speed signal traffic

32+ Gbps designed for chip-to-chip high-speed signal traffic

32+ Gbps chip-to-chip high-speed signal applications with mate / unmate capabilities

32+ Gbps chip-to-chip high-speed signal applications with mate/unmate capabilities

Vertical Direct Connect Cable for high channel count flyover applications

Vertical Direct Connect Cable for high channel count flyover applications

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