Overview The SFP transceivers are high performance, cost effective modules supporting dual 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. Features Up to 1.25Gbps data links 1310nm FP laser and photo PIN detector for 20km transmission Compliant with SFP MSA and SFF-8472 with Duplex LC receptacle Digital Diagnostic Monitoring: Internal Calibration or External Calibration Compatible with SONET Compatible with RoHS +3.3V single power supply Applications 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 Centre Wavelength 1260 1310 1360 nm Spectral Width(RMS) 4 nm Average OutputPower 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 O TXDisable Disable 2.0 Vcc V Enable 0 0.8 V TXFault Fault 2.0 Vcc V Normal 0 0.8 V Receiver Centre Wavelength 1260 1580 nm Receiver Sensitivity -23 dBm 3 Receiver Overload -3 dBm 3 LOS De-Assert LOSD -24 dBm LOS Assert LOSA -35 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 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.
