E-link China Technology Co.,Ltd.
Professional Fiber Optical Communication and CCTV Security Transmission Product Manufacturer
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| Data Rate: | 4.25G | Fiber Type: | MM |
|---|---|---|---|
| Wavelength: | 850nm | Distance: | 500 Meters |
| Fiber: | Dual Fiber | Connector: | LC |
| Highlight: | sfp bidirectional transceiver,fiber optic transceiver module |
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4.25G SFP Dual Fiber 500m Multimode SFP Optical Transceiver Module
Features
Applications
Description
The transceiver consists of three sections: a 850nm VCSEL laser transmitter, a PIN photodiode integrated with a trans-impedance preamplifier (TIA) and MCU control unit. All modules satisfy class I laser safety requirements.
The transceivers are compatible with the Small Form Factor Pluggable Multi-Sourcing Agreement (MSA)1. They are compatible with Fiber Channel per FC-PI-2 Rev. 10.0. also simultaneously compatible with Gigabit Ethernet as specified in IEEE Std 802.3.
Absolute Maximum Ratings
Table 1 - Absolute Maximum Ratings
| Parameter | Symbol | Min | Max | Unit |
| Power Supply Voltage | Vcc-Vee | 0 | 3.6 | V |
| Operating Case Temperature (Commercial) | Tc | 0 | 70 | °C |
| Operating Case Temperature (Industrial) | Tc | -40 | +85 | °C |
| Storage Temperature | Ts | -40 | +85 | °C |
| Operating Humidity | - | 5 | 90 | % |
Recommended Operating Conditions
Table 2 - Recommended Operating Conditions
| Parameter | Symbol | Min | Typical | Max | Unit | |
| Operating Case Temperature | Standard | Tc | 0 | +70 | °C | |
| Power Supply Voltage | Vcc | 3.13 | 3.3 | 3.47 | V | |
| Power Supply Current | Icc | 240 | mA | |||
| Data Rate | 4.25 | Gbps | ||||
Optical and Electrical Characteristics
Table 3 - Optical and Electrical Characteristics
| Parameter | Symbol | Min | Typical | Max | Unit | Notes | ||
| Transmitter | ||||||||
| Date Rate | 4.25 | Gb/S | ||||||
| Centre Wavelength | λc | 830 | 860 | nm | ||||
| Spectral Width (RMS) | ∆λ | 1 | nm | |||||
| Average Output Power (BOL) | Pout | -9 | -2.5 | dBm | 1 | |||
| Extinction Ratio | ER | 5 | dB | |||||
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Average Launch Power-OFF Transmitter |
Pout | -4.5 | dBm | |||||
| Optical Eye Diagram | Fiber Channel Compliant | |||||||
| Optical Rise/Fall Time(20%~80%) | tr/tf | 120 | ns | |||||
| Data Input Swing Differential | VIN | 300 | 1800 | mV | 2 | |||
| Input Differential Impedance | ZIN | 90 | 100 | 110 | Ω | |||
| 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 | ||||||||
| Centre Wavelength | λc | 830 | 860 | nm | ||||
| Receiver Sensitivity (BOL) | -15 | dBm | 3 | |||||
| Receiver Overload | 0 | dBm | 3 | |||||
| LOS De-Assert | LOSD | -20 | dBm | |||||
| LOS Assert | LOSA | -25 | dBm | |||||
| LOS Hysteresis | 0.5 | 6 | dB | |||||
| Receiver Reflectance | -20 | dB | ||||||
| Data Output Swing Differential | Vout | 350 | 1800 | mV | 4 | |||
| Loss of Signal (LOS) Assert Time | TAssert | 500 | nS | |||||
| Loss of Signal (LOS) DeassertTime | TDeassert | 500 | nS | |||||
| LOS | High | 2.0 | Vcc | V | ||||
| Low | 0 | 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.
Timing and Electrical
Table 4 - Timing and Electrical
| Parameter | Symbol | Min | Typical | Max | Unit |
| Tx Disable Negate Time | t_on | 1 | ms | ||
| Tx Disable Assert Time | t_off | 10 | µs | ||
| Time To Initialize, including Reset of Tx Fault | t_init | 300 | ms | ||
| Tx Fault Assert Time | t_fault | 100 | µs | ||
| Tx Disable To Reset | t_reset | 10 | µs | ||
| LOS Assert Time | t_loss_on | 100 | µs | ||
| LOS De-assert Time | t_loss_off | 100 | µs | ||
| Serial ID Clock Rate | f_serial_clock | 400 | KHz | ||
| MOD_DEF (0:2)-High | VH | 2 | Vcc | V | |
| MOD_DEF (0:2)-Low | VL | 0.8 | V |
Diagnostics
Table 5 – Diagnostics Specification
| Parameter | Range | Unit | Accuracy | Calibration |
| Temperature | 0 to +70 | °C | ±3°C | Internal / External |
| -40 to +85 | ||||
| Voltage | 3.0 to 3.6 | V | ±3% | Internal / External |
| Bias Current | 0 to 100 | mA | ±10% | Internal / External |
| TX Power | -9 to -3 | dBm | ±3dB | Internal / External |
| RX Power | -23 to -3 | dBm | ±3dB | Internal / External |
Contact Person: Mike Peng
Tel: 136 8646 9576
Fax: 86-755-8312-8674
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