Description
Features of 25G SFP28 Loopback Module
- SFP+ Electrical interface
- Supports 1.25~28.2Gbpsbit rates, CDR bypass is supported
- Internal electrical loop back
- Hot pluggable
- All-metal housing for superior EMI performance
- SFP+ Mechanical MSA SFF-8432 Compliant
- RoHS6 compliant (lead free)
- Operating case temperature: Commercial: -5ºC to +70°C; Extended: -20ºC to +80°C; Industrial: -40ºC to +85°C
Application
- Switch/NIC/router test: Conduct compliance verification of SFP ports during the development and manufacturing stages of the board cards;
- Troubleshooting: Determine whether it is a physical fault of the port or a fault of the optical fiber link;
- System verification: Test the performance of the equipment under high-speed signals.
Absolute Maximum Ratings
| Parameter | Symbol | Min. | Typical | Max. | Unit |
| Power Supply Voltage | VCC | 0 | 3.6 | V | |
| Storage Temperature | Ts | -40 | +85 | °C | |
| Relative Humidity | RH | 0 | 85 | % |
Recommended Operating Environment
| Parameter | Symbol | Min. | Typical | Max. | Unit | |
| Power Supply Voltage | VCC | 3.13 | 3.3 | 3.46 | V | |
| Power Supply Current | ICC | 400 | mA | |||
| Operating Case Temperature | Commercial | TC | -5 | +70 | °C | |
| Extended | -20 | +80 | ||||
| Industrial | -40 | +85 | ||||
| Data Rate | 1 | 28.2 | Gbps | |||
Electrical Characteristics
| Parameter | Symbol | Min. | Typical | Max. | Unit | Note |
| Transmitter Section | ||||||
| Input Differential Impedance | Rin | 90 | 100 | 110 | Ω | |
| Differential Data Input Swing | Vin PP | 200 | 900 | mV | 1 | |
| Transmit Disable Voltage | VD | Vcc – 1.3 | Vcc | V | ||
| Transmit Enable Voltage | VEN | Vee | Vee+ 0.8 | V | ||
| Receiver Section | ||||||
| Differential Data Output Swing | Vout PP | 400 | 900 | mV | ||
| LOS Fault | Vlos fault | Vcc – 0.5 | Vcc_host | V | 2 | |
| LOS Normal | Vlos norm | Vee | Vee+0.5 | V | 2 | |




