1.25Gbps 850nm multimode 550m SFP Optical Transceiver
Description:
The SFP transceivers are high performance, cost effective modules supporting data-rate of 1.25Gbps and 550m transmission distance with MMF.
The transceiver consists of three sections: a 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 SFP Multi-Source Agreement (MSA) and SFF-8472. For further information, please refer to SFP MSA.
Features:
Data-rate of 1.25Gbps operation850nm VCSEL laser and PIN photodetectorCompliant with SFP MSA and SFF-8472 with duplex LC receptacleDigital Diagnostic Monitoring:Internal Calibration or External Calibration500m transmission with 50/125µm MMF300m transmission with 62.5/125µm MMFCompatible with RoHS+3.3V single power supplyOperating case temperature:Standard : 0 to +70°CExtended : -20 to +85°Cindustrial : -40 to +85°C
ApplicationsGigabit EthernetFiber ChannelSwitch to Switch interfaceSwitched backplane applicationsRouter/Server interfaceOther optical transmission systems
Absolute Maximum Ratings:
Table 1 - Absolute Maximum Ratings
| Parameter |
Symbol |
Min |
Max |
Unit |
| Supply Voltage |
Vcc |
-0.5 |
4.5 |
V |
| Storage Temperature |
Ts |
-40 |
+85 |
°C |
| Operating Humidity |
- |
5 |
85 |
% |
Recommended Operating Conditions
Table 2 - Recommended Operating Conditions
| Parameter |
Symbol |
Min |
Typical |
Max |
Unit |
| Operating Case Temperature |
Standard |
Tc |
0 |
|
+70 |
°C |
| -20 |
+85 |
| industrial |
-40 |
|
+85 |
°C |
| Power Supply Voltage |
Vcc |
3.13 |
3.3 |
3.47 |
V |
| Power Supply Current |
Icc |
|
|
300 |
mA |
| Data Rate |
|
|
1.25 |
|
Gbps |
Optical and Electrical Characteristics:
DF -8524-S5x(D): (VCSEL and PIN, 500m Reach)
Table 3 - Optical and Electrical Characteristics
| Parameter |
Symbol |
Min |
Typical |
Max |
Unit |
Notes |
| Transmitter |
| Centre Wavelength |
λc |
830 |
850 |
860 |
nm |
|
| Spectral Width (RMS) |
λ |
|
|
0.85 |
nm |
|
| Average Output Power |
Pout |
-9.5 |
|
-3.5 |
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 |
770 |
|
860 |
nm |
|
| Receiver Sensitivity |
|
|
|
-18 |
dBm |
3 |
| Receiver Overload |
|
0 |
|
|
dBm |
3 |
| LOS De-Assert |
LOSD |
|
|
-18 |
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 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.
Ordering information:
| Part Number |
Product Description |
| DF-8524-S5C |
850nm, 1.25Gbps, 550m, 0ºC ~ +70ºC |
| DF-8524-S5CD |
850nm, 1.25Gbps, 550m, 0ºC ~ +70ºC, With Digital Diagnostic Monitoring |
| DF-8524-S5N |
850nm, 1.25Gbps, 550m, -20ºC ~ +85ºC |
| DF-8524-S5ND |
850nm, 1.25Gbps, 550m, -20ºC ~ +85ºC, With Digital Diagnostic Monitoring |
| DF-8524-S5T |
850nm, 1.25Gbps, 550m, -40ºC ~ +85ºC |
| DF-8524-S5TD |
850nm, 1.25Gbps, 550m, -40ºC ~ +85ºC, With Digital Diagnostic Monitoring |
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