1000Base 2 Channels BIDI CSFP Compact SFP Transceiver Module TX1490nm/RX1310nm 20km
1000Base 2 Channels BIDI CSFP Transceiver Module TX1490nm/RX1310nm 20km LC DOM
Description
The CSFP BIDI LX20 transceiver is with two independent data communication channels, for each separate channel this transceiver unit uses a highly reliable 1490nm DFB Laser transmitter and a 1310nm PIN Photodiode receiver, which will enable network system vendors to increase port density and data throughput, while reducing network equipment cost.
This CSFP BIDI LX20 module supports 1.063-1.25Gbps data rate and such applications as Gigabit Ethernet (1.25Gbps) and 1G Fiber Channel (1.0625Gbps), a max link up to 20km, operates in Standard 0°-70°C temperature range and has Double LC interface.
It is with the SFP 20-pin connector to allow hot plug capability. DDM/DOM optical diagnostic monitoring functions are available through an I2C interface, with provide diagnostic information about the present operating conditions.
This CSFP BIDI LX20 Transceiver is fully compliant to compact Small Form-Factor Pluggable (CSFP) MSA option 2 and CE/RoHS certified.
Specifications
| Product Series | CSFP Bidirectional Transceiver | Part Number | GCS-B4312-B4312-20C |
| Package | CSFP | Type | 2x BiDi LX |
| Bit Rate (Gbps) | 1.25G/1.25G | Lane Count | 2x (Tx/Rx) |
| Max Reach | 20km | Interface | Dual LC PC |
| TX Wavelength (Typical) | 2x 1490nm | RX Wavelength (Typical) | 2x 1310nm |
| Power Supply Voltage | +3.3V (typical) | Power Dissipation | ≤ 1.3W |
| Laser Type | DFB | PD Type | PIN |
| TX Output Power | -9 ~ -3dBm | RX Sensitivity | < -22dBm |
| Extinction Ratio | > 9dB | Overload | > -3dBm |
| Power Budget (dB) | 13dB | Digital Diagnostic | Support |
| Environment | Operating: 0 to 70°C | Warranty | 3 years |
| Storage: -40°C to 85°C | Weight | 0.025kg | |
| Protocols | Gigabit Ethernet, MSA Compliant | ||
Features
- 2 Fiber dual Bi-directional CSFP transceivers
- Support 1.25Gb/s bi-directional data links
- 1490nm DFB laser and 1310nm PIN photodetector
- Up to 20km on 9/125µm SMF
- Compliant with CSFP MSA Option 2 and SFF-8472
- Digital Diagnostic Monitoring
- Compatible with RoHS
- Duplex LC Connector
- +3.3V single power supply
- Operating case temperature:0 to +70°C (Commercial)/ -10 ~ +80°C (Extended)/ -40°C to +85°C (Industrial)
- Class 1 Laser International Safety Standard IEC 60825 Compliant
Application
- WDM Gigabit Ethernet Links l
- SONET/SDH Equipment Interconnect l
- Fibre Channel Links
Electrical and Optical Characteristics
| Parameter | Symbol | Min | Typical | Max | Unit | Notes | ||
| Transmitter | ||||||||
| Centre Wavelength | λc | 1470 | 1490 | 1510 | nm | |||
| Spectral Width (-20dB) | σ | 1 | nm | |||||
| Side Mode Suppression Ratio | SMSR | 30 | dB | |||||
| Average Output Power | Pout | -9 | -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 | 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 | 1290 | 1330 | nm | ||||
| Receiver Sensitivity | -23 | dBm | 3 | |||||
| Receiver Overload | -3 | dBm | 3 | |||||
| LOS De-Assert | LOSD | -23 | dBm | |||||
| LOS Assert | LOSA | -35 | dBm | |||||
| LOS Hysteresis | 1 | 4 | dB | |||||
| Data Output Swing Differential | Vout | 400 | 1800 | 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.
Recommended Interface Circuit
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