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
Benefits
`Cost-effective copper solution
`Lowest total system power solution
`Lowest total system EMI solution
`Optimized design for Signal Integrity
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 |
|
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