11
No Preview Available !

FSP3148-L2xx
2.5Gbps SFP Optical Transceiver, 20km Reach
Features
 Up to 2.67Gbps operation
 1310nm DFB laser and PIN photo-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 OC-48-LR
 Compatible with RoHS
 +3.3V single power supply
 Operating case temperature:
Standard : 0 to +70°C
Industrial : -40 to +85°C
Applications
 Gigabit Ethernet
 Fiber Channel
 Switch to Switch interface
 Switched backplane applications
 Router/Server interface
 Other optical transmission systems
Description
The SFP transceivers are high performance, cost effective modules supporting dual data-rate of
2.1Gbps/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 (MSA) and SFF-8472. For further
information, please refer to SFP MSA.
Part No. FSP3148-L2xx
Date: 12-May-2014
Page 1 of 9

1 Page





Optical and Electrical Characteristics
FSP3148-L2xx: (DFB and PIN, 1310nm, 20km Reach)
Table 3 - Optical and Electrical Characteristics
Parameter
Symbol
Min
Typical
Transmitter
Centre Wavelength
λc 1260
1310
Spectral Width(-20dB)
∆λ
Side Mode Suppression Ratio
SMSR
30
Average Output Power
Pout
-6
Extinction Ratio
ER 9
Optical Rise/Fall Time (20%~80%)
tr/tf
Data Input Swing Differential
Input Differential Impedance
VIN
ZIN
400
90
100
TX Disable
Disable
Enable
2.0
0
TX Fault
Fault
Normal
2.0
0
Receiver
Centre Wavelength
λc 1260
Receiver Sensitivity
Receiver Overload
-3
LOS De-Assert
LOSD
LOS Assert
LOSA
-30
LOS Hysteresis
1
Data Output Swing Differential
Vout
370
LOS
High
Low
2.0
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 @2500Mbps, BER ≤1×10-12.
4. Internally AC-coupled.
Max
Unit
Notes
1360
1
1
0.16
1800
110
Vcc
0.8
Vcc
0.8
nm
nm
dB
dBm
dB
ns
mV
Ω
V
V
V
V
1
2
1360
-18
-19
4
1800
Vcc
0.8
nm
dBm
dBm
dBm
dBm
dB
mV
V
V
3
3
4
Part No. FSP3148-L2xx
Date: 12-May-2014
Page 3 of 9


3Pages




Pin Definitions
Pin Diagram
Part No. FSP3148-L2xx
Date: 12-May-2014
Page 6 of 9

6 Page