Product Description
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Key Features
• 500m transmission with 50/125µm MMF
• 300m transmission with 62.5/125µm MMF
• Up to 1.25Gbps data links
• +3.3V single power supply
• Compatible with RoHS
• 850nm VCSEL laser and PIN photodetector
• Compliant with SFP MSA and SFF-8472 with Duplex LC receptacle
• Digital Diagnostic Monitoring: Internal Calibration or External Calibration
The SFP transceivers are high performance, cost effective modules supporting dual data-rate of 1.25Gbps and 550m transmission distance with MMF.
The transceiver consists of three sections: a VCSEL lasertransmitter, a PIN photodiode integrated with a trans-impedance preamplifier (TIA) and MCU control unit. All modules satisfy class I laser safety requirements.
Application
- SDH and SONET system
- Fiber Channel
- Switch to Switch interface
- Switched backplane applications
- Router/Server interface
- Other optical transmission systems
Optical and Electrical Characteristics
| Parameter | Symbol | Min | Typical | Max | Unit | Notes | ||
Transmitter |
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| Centre Wavelength | 830 | 850 | 860 | nm | ||||
| SpectralWidth (RMS) | 0.85 | nm | ||||||
| Average Output Power | Pout | -9.5 | -3 | dBm | 1 | |||
| Extinction Ratio | ER | 9 | dB | |||||
| Optical Rise/Fall Time (20%~80%) | tr/tf | 0.26 | ns | |||||
| Data Input Swing Differential | VIN | 400 | 1800 | mV | 2 | |||
| Input Differential Impedance | ZIN | 90 | 100 | 110 | O | |||
| TX Disable | Disable | 2.0 | Vcc | V | ||||
| Enable | 0 | 0.8 | V | |||||
| TX Fault | Fault | 2.0 | Vcc | V | ||||
| Normal | 0 | 0.8 | V | |||||
Receiver |
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| Centre Wavelength | 770 | 860 | nm | |||||
| ReceiverSensitivity | -18 | dBm | 3 | |||||
| ReceiverOverload | -3 | dBm | 3 | |||||
| LOS De-Assert | LOSD | -20 | dBm | |||||
| LOS Assert | LOSA | -30 | dBm | |||||
| LOS Hysteresis | 1 | 4 | dB | |||||
| Data Output Swing Differential | Vout | 700 | 900 | mV | 4 | |||
| LOS | High | 2.0 | Vcc | V | ||||
| Low | 0.8 | V | ||||||
Notes:
1. The optical power is launched into MMF.
2. PECL input, internally AC-coupled and terminated.
3. Measured with a PRBS 27-1 test pattern @1250Mbps, BER =1×10-12.
4. Internally AC-coupled.
