25G SFP28 AOC Cable Active Optical Cable RoHS-6 Compliant
Product Overview
Features
Transmission data rate up to 25.78Gbps
850nm VCSEL laser
PIN photo-detector
Internal CDR on both transmitter and receiver channels
Low power consumption < 1W
Hot-pluggable SFP28 form factor
Up to 70m on OM3 MMF and 100m on OM4 MMF
Digital diagnostics functions are available (optional)
Operating case temperature range 0°C to +70°C
3.3V power supply voltage
RoHS-6 compliant
Application
IEEE 802.3by 25GBASE-SR
Description
The Gigalight 25G SFP28 Active Optical Cables (AOCs) are direct-attach fiber assemblies with SFP28 connectors, compliant with 25G Ethernet IEEE 802.3by 25GBASE-SR standard. They are suitable for short distances and offer a cost-effective solution to connect within racks and across adjacent racks. The length is up to 70 meters using OM3 MMF and 100 meters using OM4 MMF. The 25G SFP28 AOC is designed to operate over multimode fiber systems using a nominal wavelength of 850nm. The electrical interface uses a 20-contact edge type connector.
Block Diagram
Absolute Maximum Ratings
Table 1 - Absolute Maximum Ratings
| Parameter | Symbol | Min | Max | Unit |
| Supply Voltage | Vcc | 0 | 3.6 | V |
| Storage Temperature | Ts | -40 | +85 | °C |
| Operating Humidity | - | 5 | 85 | % |
Recommended Operating Conditions
Table 2 - Recommended Operating Conditions
| Parameter | Symbol | Min. | Typical | Max | Unit | |
| Operating Case Temperature | Commercial | Tc | 0 | +70 | °C | |
| Power Supply Voltage | Vcc | 3.13 | 3.3 | 3.47 | V | |
| Power Supply Current | Icc | 300 | mA | |||
| Fiber Length on 50/125μm high-bandwidth (OM3) MMF | 70 | m | ||||
| Fiber Length on 50/125μm high-bandwidth (OM4) MMF | 100 | m | ||||
Optical and Electrical Characteristics
Table 3 - Optical and Electrical Characteristics
Optical characteristics
The following optical characteristics are defined over the Recommended Operating Environment unless otherwise specified.
| Parameter | Symbol | Min. | Typical | Max | Unit |
| Transmitter | |||||
| Data rate | BR | 25.78 | Gbps | ||
| Center Wavelength | λt | 840 | 850 | 860 | nm |
| Spectral Width (-20dB) | σ | 0.6 | nm | ||
| RMS spectral width | Pm | - | - | Note 1 | nm |
| Average Optical Power | Pavg | -8.4 | - | 2.4 | dBm |
| Optical Power OMA | POMA | -6.4 | 3 | dBm | |
| Extinction Ratio | ER | 2 | - | - | dB |
| Differential data input swing | VIN,PP | 40 | 1000 | mV | |
| Input Differential Impedance | ZIN | 90 | 100 | 110 | |
| Receiver | |||||
| Data rate | BR | 25.78 | Gbps | ||
| Center Wavelength | λr | 840 | 850 | 860 | nm |
| Receiver Sensitivity(OMA) | Psens | - | - | -10 | dBm |
| Stressed Sensitivity in OMA | - | - | -5.2 | dBm | |
| Receiver Power (OMA) | 3 | dBm | |||
| LOS De-Assert | LOSD | - | -13 | dBm | |
| LOS Assert | LOSA | -30 | - | dBm | |
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