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