High quality DAC Cable 100G QSFP28 Passive Direct Attach Copper Twinax Cable
QSFP28 Direct Attach Cables are compliant with the SFF-8665 specifications. Various choices of wire gauge are available from 30 to 26 AWG with various choices of cable length (up to 5m).
Features
Compliant with SFF- 8665
Up to 28.3125Gbps data rate per channel
Up to 5m transmission
Operating temperature: 0~70℃
Single 3.3V power supply
RoHS compliant
Advantage
Cost-effective copper solution
Lowest total system power solution
Lowest total system EMI solution
Optimized design for Signal Integrity
General Product Characteristics
| QSFP+ DAC Specifications | |
| Number of Lanes | Tx & Rx |
| Channel Data Rate | 28.3125 Gbps |
| Operating Temperature | 0 to + 70°C |
| Storage Temperature | -40 to + 85°C |
| Supply Voltage | 3.3 V nominal |
| Electrical Interface | 38 pins edge connector |
| Management Interface | Serial, I2C |
High Speed Characteristics
| Parameter | Symbol | Min. | Typ | Max. | Unit | Notes |
| Differential Impedance | Zd | 90 | 100 | 110 | Ω | |
| Differential Input Return Loss | SDDXX | <-12+2* SQRT (f) with f in GHz | dB | 0.01~4.1GHz | ||
| <-6.3+13*Log10/(f/5.5) with f in GHz | dB | 4.1~19GHz | ||||
| Common Mode Output Return Loss | SCCXX | < -7+1.6*f with f in GHz | dB | 0.01~12.89GHz | ||
| dB | 12.89~19GHz | Gbps | ||||
| Difference Waveform Distortion Penalty | dWDPc | 6.75 | dB | |||
| VMA Loss | L | 4.4 | dB | |||
| VMA Loss to Crosstalk Ratio | VCR | 32.5 | dB | |||
Applications
100G Ethernet
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