Wuhan Spring Technology Co., Ltd
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SFP BIDI 20km OEM Compatible LC 2.5G T1310/R1550nm Optical Transceiver Modulee With DDM
Ordering information
| Part Number | Product Description |
| S-SB2G35L20-CD | BIDI SFP, 2.5Gbps, Tx1310/Rx1550nm, SM, 20km, LC, 0ºC~+70ºC, With DDM |
| S-SB2G35L20-ID | BIDI SFP, 2.5Gbps, Tx1310/Rx1550nm, SM, 20km,LC, -40ºC~+85ºC, With DDM |
Description
Springtek SFP transceivers are high performance, cost effective modules supporting data rate of 2.5Gbps and 20km transmission distance with SMF.
The transceiver consists of three sections: a DFB 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 SFP Multi-Source Agreement and SFF-8472 digital diagnostics functions.
Features
Applications
Absolute Maximum Ratings
| Parameter | Symbol | Min | Typ | Max | Unit |
| Power Supply Voltage | Vcc | -0.5 | 4 | V | |
| Storage Temperature Range | Ts | -40 | 85 | °C | |
| Relative Humidity - Operating | RHO | 5 | 85 | % |
Recommended Operating Conditions
| Parameter | Symbol | Min | Typ | Max | Unit |
| Case Operating Temperature Range | Tc | 0 | - | 70 | °C |
| -40 | - | 85 | |||
| Power Supply Voltage | Vcc | 3.14 | 3.3 | 3.47 | V |
| Supply Current | Icc | - | - | 300 | mA |
| Data Rate | BR | - | 2.5 | - | Gbps |
Optical Characteristics
| Parameter | Symbol | Min | Typical | Max | Unit | Notes | |
| Transmitter | |||||||
| Centre Wavelength | λc | 1260 | 1310 | 1360 | nm | ||
| Spectral Width(-20dB) | Δλ | 1 | nm | ||||
| Side-Mode Suppression Ratio | SMSR | 30 | dB | ||||
| Average Output Power | Pout | -5 | 0 | dBm | 1 | ||
| Extinction Ratio | ER | 9.0 | dB | ||||
| Data Input Swing Differential | VIN | 180 | 1200 | 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 | 1530 | 1550 | 1570 | nm | ||
| Receiver Sensitivity | -18 | dBm | 3 | ||||
| Receiver Overload | -1 | dBm | 3 | ||||
| LOS De-Assert | LOSD | -20 | dBm | ||||
| LOS Assert | LOSA | -35 | dBm | ||||
| LOS Hysteresis | 0.5 | 4 | dB | ||||
| Data Output Swing Differential | Vout | 600 | 800 | 1000 | mV | 4 | |
| LOS | High | 2.0 | Vcc | V | |||
| Low | 0.8 | V | |||||
| Notes: 1. The optical power is launched into SMF. 2. PECL input, internally AC-coupled and terminated. 3. Measured with a PRBS 223-1 test pattern @2488Mbps, BER ≤1×10-12. 4. Internally AC-coupled. | |||||||
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 | 100 | 400 | KHz | |
| MOD_DEF (0:2)-High | VH | 2 | Vcc | V | |
| MOD_DEF (0:2)-Low | VL | 0.8 | V |
Diagnostics
| Parameter | Range | Unit | Accuracy | Calibration |
| Temperature | 0 to +70 | °C | ±3°C | Internal |
| -20 to +80 | ||||
| -40 to +85 | ||||
| Voltage | 3.0 to 3.6 | V | ±3% | Internal |
| Bias Current | 0 to 100 | mA | ±10% | Internal |
| TX Power | -5 to 0 | dBm | ±3dB | Internal |
| RX Power | -23 to -1 | dBm | ±3dB | Internal |