40G QSFP+ 3m (10ft) Passive Direct Attach Copper Cable Twinax QSFP+ to QSFP+ DAC Cable
QSFP+ Direct Attach Cables are compliant with the SFF-8436 specifications. Various choices of wire gauge are available from 30 to 24 AWG with various choices of cable length (up to 7m)
Features and Benefits Compliant with SFF- 8436. Up to 10.3125Gbps data rate per channel Up to 7m transmission Operating temperature: -40℃ to +80℃ 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 High Speed Characteristics
QSFP+ DAC Specifications
Number of Lanes
Tx & Rx
Channel Data Rate
10.3125 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
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
4.1~11.1GHz
Common Mode Output Return Loss
SCCXX
< -7+1.6*f with f in GHz
dB
0.01~2.5GHz
-3
dB
2.5~11.1GHz
Difference Waveform Distortion Penalty
dWDPc
6.75
dB
VMA Loss
L
4.4
dB
VMA Loss to Crosstalk Ratio
VCR
32.5
dB
Applications 40G Ethernet
