ASCENT 100G QSFP28 Active Optical Cable is a high-performance integrated cable suitable for high-speed core network and data center applications.
• Full duplex 4 channel 850 nm parallel active optical cable
• Up to 27.952 Gbps data rate per channel
• Maximum link length of 150 m links on OM3 multi-mode fiber
• High reliability 850 nm VCSEL technology
• Electrically hot-pluggable
• Case operating temperature range: 0 °C to +70 °C
• Power dissipation < 2.5 W per cable end
• Compliant to QSFP28 MSA
• RoHS Compliant
Parameter | Symbol | Min. | Typ. | Max. | Unit | Notes |
Storage Temperature | Ts | ‑40 | ‑ | 85 | °C | |
Relative Humidity | RH | 5 | ‑ | 95 | % | |
Power Supply Voltage | VCC | ‑0.3 | ‑ | 4 | V | |
Signal Input Voltage | Vcc‑0.3 | ‑ | Vcc+0.3 | V |
Recommended Operating Conditions
Parameter | Symbol | Min. | Typ. | Max. | Unit | Notes |
Case Operating Temperature | Tcase | 0 | ‑ | 70 | °C | Without air flow |
Power Supply Voltage | VCC | 3.14 | 3.3 | 3.46 | V | |
Power Supply Current | ICC | ‑ | 750 | mA | Per cable end | |
Data Rate | BR | 25.78125 | Gbps | Each channel |
General Product Characteristics
Parameter | Description | Notes |
Module Form Factor | QSFP28 | |
Number of Lanes | 4 Tx /Rx | |
Maximum Aggregate Data Rate | 111.8 Gb/s | |
Maximum Data Rate per Lane | 27.952 Gb/s | |
Standard Cable Lengths | 3 m, 5 m, 7 m, 10 m | Other lengths, please contact sales |
Protocols Supported | Typical applications include Infiniband, Fiber Channel, 100G Ethernet | |
Electrical Interface and Pin‑out | 38‑pin edge connector | Pin‑out as defined by the QSFP28 MSA |
Standard Optical Cable Type | Multimode ribbon fiber cable assembly, riser‑rated | |
Maximum Power Consumption | 2.5 W per end | |
Management Interface | Serial, I2C‑based, 400 kHz maximum frequency | As defined by the QSFP28 MSA |
Note: 100G Ethernet &100GBASE‑SR4 and ITU‑T OTU4 has different register settings, not auto‑negotiation
High‑speed Electrical Characteristics per Lane
Parameter‑Inputs | Symbol | Min. | Typ. | Max. | Unit | Notes |
Input Electrical sSecifications (per Lane) | ||||||
Differential Voltage pk‑pk | 900 | mV | ||||
Common Mode Noise RMS | 17.5 | mV | ||||
Differential Termination Resistance Mismatch | 10 | % | ||||
Differential Return Loss | SDD22 |
Per OIF CEI‑28G‑VSR and CAUI‑4 requirements
| ||||
Common Mode to Differential Conversion and Differential to Common Mode Conversion | SDC22, SCD22 | dB | ||||
dB | ||||||
Common Mode Return Loss | SCC22 | dB | ||||
Transition Time, 20 to 80 % | Tr, Tf | 10 | ps | |||
Common Mode Voltage | Vcm | ‑0.3 | 2.8 | V | ||
Eye Width at 1E‑15 probability | EW15 | 0.46 | UI | |||
Eye Height at 1E‑15 probability | EH15 | 94 | mV | |||
Output Electrical Specifications (per Lane) | ||||||
Differential Voltage pk‑pk | 900 | mV | ||||
Common Mode Voltage | Vcm | ‑350 | 2850 | mV | ||
Common Mode Noise RMS | 17.5 | mV | ||||
Differential Termination Resistance Mismatch | 10 | % | ||||
Differential Return Loss | SDD22 |
Per OIF CEI‑28G‑VSR and CAUI‑4 requirements | dB | |||
Common Mode to Differential Conversion and Differential to Common Mode Conversion | SDC22, SCD22 | dB | ||||
dB | ||||||
Common Mode Return Loss | SCC22 | dB | ||||
Output Rise and Fall time (20 % to 80 %) | tRH, tFH | 9.5 | ps | |||
Vertical Eye Closure | VEC | 5.5 | dB | |||
Eye Width at 1E‑15 probability | EW15 | 0.57 | UI |
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