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GPON SFP OLT Transceiver
GPON SFP OLT Transceiver,1490nm 2.5Gbps continuous-mode transmitter with DFB laser,1310nm 1.25Gbps burst-mode receiver with APD-TIA.Gigabit Passive Optical Networks (G-PON) – OLT side

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INFORMATION

Features
w Single Fiber Transceiver with single mode SC receptacle
w 1490nm continuous-mode transmitter with DFB laser
w 1310nm burst-mode receiver with APD-TIA
w Can reach 20km transmission distance
w Single 3.3V power supply
w Reset burst-mode receiver design
w Burst mode signal detect output which is LVTTL compatible.
w Burst mode received signal strength indication (RSSI) output
w Complies with ITU-T G984.2 Class C+
w Digital diagnostic interface compliant with SFF-8472 Rev 9.4 ,
w Complies with RoHS directive (2002/95/EC)
w Operating case temperature:
Standard : 0 to +70°C
Applications
w Gigabit Passive Optical Networks (G-PON) – OLT side
Description
The BD-4321S-C2CDA transceiver is the high performance module for single fiber by using 1490nm continuous-mode transmitter and 1310nm burst-mode receiver. It is optical line terminal(OLT) for ITU-T G984.2. The optical transceiver is compliant with the Small Form- Factor Pluggable (SFP) Multi-Source Agreement (MSA).
The transmitter section uses a 1490nm DFB LD with automatic power control (APC) function and temperature compensation circuitry to ensure stable extinction ratio over all operating temperature range. and is ClassⅠlaser compliant IEC825 and CDRH standards.The receiver has a hermetically packaged burst-mode APD-TIA (trans-impedance amplifier) pre-amplifier and a burst-mode limiting amplifier with LVPECL compatible differential outputs.
The receiver also includes the function of burst mode signal detect output and fast RSSI output which is enabled by a trigger. When the burst optical power is on, the receiver outputs high level; when the burst optical power is off, the receiver outputs low level. Fast RSSI function can satisfy more severe timing demand to monitor the power from any ONU.
Absolute Maximum Ratings
Parameter
Symbol
Min.
Max.
Units
Notes
Storage Temperature
Tst
-40
+85
°C
-
Operating Case Temperature
Tc
0
70
°C
-
Operating Humidity
RH
5
90
%
Non-condensing
Input Voltage
-
GND
Vcc
V
-
Power Supply Voltage
Vcc-Vee
0
3.6
V
-
Recommended Operating Conditions
Parameter
Symbol
Min
Typical
Max
Unit
Operating Case Temperature
Standard
Tc
0
-
+70
°C
Power Supply Voltage
Vcc
3.13
3.3
3.47
V
Power Supply Current
Icc
-
-
500
mA
Optical and Electrical Characteristics
Parameter
Symbol
Min
Typical
Max
Unit
Notes
Transmitter
Data Rate
2.5
Gb/S
Centre Wavelength
λc
1480
1500
nm
Spectral Width
∆λ
0.4
1
nm
Side Mode Suppression Ratio
SMSR
30
dB
Average Output Power
Pout
3
7
dBm
1
Extinction Ratio
ER
8.2
dB
Average Launch Power-OFF Transmitter
Poff
-40
dBm
Optical Eye Diagram
Compliant with G984.2
Optical Rise/Fall Time (20%~80%)
tr/tf
160
ps
Data Input Swing Differential
VIN
200
2400
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
Data Rate
1.25
Gb/S
Centre Wavelength
λc
1260
1360
nm
Receiver Sensitivity
Sen
-30
dBm
3
Receiver Overload
Sat
-12
dBm
3
Receiver CID Tolerance
72
Bit
Receiver Reflectance
-20
dB
Data Output Voltage - High
VOH
VccR -1.05
VccR – 0.85
V
4
Data Output Voltage - Low
VOL
VccR -1.84
VccR – 1.60
V
4
Burst Detect De-assert
BSD_D
-45
dBm
Burst Detect Assert
BSD_A
-32
dBm
Burst Detect Hysteresis
1
6
dBm
BRST_Det High
V_DET
H
2.4
VCC
V
BRST_Det Low
V_DETL
0
0.4
V
Reciever Power DDM (RSSI) Error
RXDDM
+/-3
dBm
5


Ordering information


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