SFP LX
1.25Gbps SFP Transceiver, Single Mode, 20km Reach (PN: SP-311G-LX(D)x )
Product Features
● Supports up to 1.25Gbps bit rates
● Hot-pluggable SFP footprint
● 1310nm FP laser and PIN photo detector, Up to 20km for SMF transmission
● Compliant with SFP MSA and SFF-8472 with duplex LC receptacle
● Compatible with RoHS
● Single +3.3V power supply
● Real Time Digital Diagnostic Monitoring
● Operating case temperature:
Standard: 0 to +70°C
Extended: -20 to +80°C
Industrial: -40 to +85°C
Applications
● 1.25Gbps Optical systems
● Gigabit Ethernet
● 1.063Gbps Fiber Channel
● Other Optical links
Description
The SFP transceivers are high performance, cost effective modules supporting data rate of 1.25Gbps and 20km transmission distance with SMF.
The transceiver consists of three sections: a FP 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.
Optical and Electrical Characteristics
Parameter | Symbol | Min | Typical | Max | Unit | Notes | ||
Transmitter | ||||||||
Centre Wavelength | λc | 1260 | 1310 | 1360 | nm | |||
Side-Mode Suppression Ratio | SMSR | - | - | - | dB | |||
Average Output Power | Pout | -9 | 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 | 1260 | 1610 | nm | ||||
Receiver Sensitivity | -23 | dBm | 3 | |||||
Receiver Overload | -1 | dBm | 3 | |||||
LOS De-Assert | LOSD | -24 | dBm | |||||
LOS Assert | LOSA | -38 | 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 27-1 test pattern @1250Mbps, BER ≤1×10-12.
4. Internally AC-coupled.
Ordering information for SFP LX
| Part Number | Product Description |
SP-311G-LXDC | 1310nm, 1.25Gbps, LC, 20km, 0°C~+70°C, with DDM |
SP-311G-LXDE | 1310nm, 1.25Gbps, LC, 20km, -10°C~+80°C, with DDM |
SP-311G-LXDI | 1310nm, 1.25Gbps, LC, 20km, -40°C~+85°C, with DDM |
SP-311G-LXC | 1310nm, 1.25Gbps, LC, 20km, 0°C~+70°C, without DDM |
SP-311G-LXE | 1310nm, 1.25Gbps, LC, 20km, -10°C~+80°C, without DDM |
SP-311G-LXI | 1310nm, 1.25Gbps, LC, 20km, -40°C~+85°C, without DDM |
Regular part number/name
| GLC-LH-SM |
SFP-GE-L |
GLC-LH-SMD |
SFP 1000Base-LX |
1000BASE-LX/LH |
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