EPON OLT PX20++++ SFP OLT Transceiver:
EPON OLT SFP (Small Form-Factor Pluggable) module is designed for Fiber-To-The-x (FTTx) solutions, originating from China. It is manufactured by an OEM with the model number PX20++++ SFP. The EPON OLT module is constructed from metal and is colored white. It operates within a central wavelength range of 1480-1500 nm with an optical transmitter power of 8 dB, making it suitable for FTTX applications.
1. EPON OLT Features:
SFP with SC/UPC Receptacle Transceiver
1490 nm DFB Tx
1310 nm APD Rx
Digital diagnostics SFF-8472 Compliant
1250 Mbps continuous mode Transmission
1250 Mbps Burst mode receiver Data Rate
Provide fast RSSI function Operation case temperature: 0~70°C
Complies with RoHS directive (2002/95/EC)
2. EPON OLT Application
GEPON OLT IEEE802.3ah 1000BASE-PX20++++ FTTx
3. EPON OLT Function Diagram
5. Transmitter Characteristics
|
Parameter
|
Symbol
|
Min.
|
Typ.
|
Max.
|
Units
|
Notes
|
||||
|
Optical Transmitter Power
|
P0
|
7
|
7.5
|
11
|
dBm
|
1
|
||||
|
Optical Transmitter Power off
|
POFF
|
–
|
–
|
-39
|
dBm
|
|||||
|
Output Center Wavelength
|
λ
|
1480
|
–
|
1500
|
nm
|
|||||
|
Output Spectrum Width
|
Δλ
|
–
|
–
|
1.0
|
nm
|
|||||
|
Side Mode Suppression Ratio
|
SMSR
|
30
|
–
|
–
|
dB
|
|||||
|
Extinction Ratio
|
ER
|
9
|
–
|
–
|
dB
|
|||||
|
Optical Rise Time
|
–
|
–
|
–
|
260
|
ps
|
|||||
|
Optical Fall Time
|
–
|
–
|
–
|
260
|
ps
|
|||||
|
Optical Eye Diagram
|
Compliant with IEEE Std 802.3ahTM-2004
|
|||||||||
|
Tolerence to Tx Back Reflection
|
–
|
-15
|
–
|
–
|
dB
|
|||||
|
Data Rate
|
–
|
–
|
1.25
|
–
|
Gb/s
|
|||||
|
Single Ended Data Input Voltage Swing
|
VPP
|
200
|
–
|
1200
|
mV
|
|||||
|
Differential Input Impedance
|
ZIN
|
80
|
100
|
120
|
ohm
|
|||||
|
Tx_fault Output Voltage- High
|
VOH
|
2.4
|
–
|
–
|
V
|
|||||
|
Tx_fault Output Voltage- Low
|
VOL
|
–
|
–
|
0.4
|
V
|
|||||
|
Tx_Dis Input Voltage- High
|
VIH
|
2.0
|
–
|
–
|
V
|
|||||
|
Tx_Dis Input Voltage- Low
|
VIL
|
–
|
–
|
0.8
|
V
|
|||||
Note 1: 1.25Gbps continuous-mode , PRBS27-1.
6. .Receiver Characteristic
|
Parameter
|
Symbol
|
Min.
|
Typ.
|
Max.
|
Units
|
Notes
|
|
Wavelength of Operation
|
–
|
1260
|
–
|
1360
|
nm
|
–
|
|
Data Rate
|
–
|
–
|
1.25
|
–
|
Gb/s
|
–
|
|
Sensitivity
|
Sen
|
–
|
-33.5
|
-32
|
dBm
|
1
|
|
Saturation Optical Power
|
Sat
|
-8
|
–
|
–
|
dBm
|
1
|
|
LOS Assert Level
|
LOSA
|
-45
|
–
|
–
|
dBm
|
2
|
|
LOS Deassert Level
|
LOSD
|
–
|
–
|
-32
|
dBm
|
2
|
|
Reflectance of equipment
|
–
|
–
|
–
|
-20
|
dB
|
|
|
Receiver Burst-mode Dynamic Range
|
–
|
15
|
–
|
–
|
dB
|
3
|
|
Data Output Voltage – High
|
VOH
|
VccR -1.05
|
–
|
VccR -0.85
|
V
|
–
|
|
Data Output Voltage – Low
|
VOL
|
VccR -1.84
|
–
|
VccR -1.60
|
V
|
–
|
|
RSSI accuracy
|
–
|
-3
|
–
|
3
|
dB
|
4
|
|
LOS Output Voltage- High
|
VLOSH
|
2
|
–
|
–
|
V
|
|
|
LOS Output Voltage- Low
|
VLOSL
|
–
|
–
|
0.8
|
V
|
|
|
LOS Assert Time
|
TA
|
–
|
–
|
500
|
ns
|
|
|
LOS Deassert Time
|
TD
|
–
|
–
|
500
|
ns
|
|
|
RSSI Trigger-Low
|
–
|
0
|
–
|
0.8
|
V
|
|
|
RSSI Trigger-High
|
–
|
2.0
|
–
|
Vcc
|
V
|
|
|
RSSI Trigger Delay
|
TD
|
500
|
ns
|
5
|
||
|
RSSI Trigger Width
|
TW
|
500
|
ns
|
|||
|
Optical Signal During Time
|
TONU EN_DUR
|
1000
|
–
|
–
|
ns
|
6
|
7. Burst Mode Receiver Dynamic Range
8. Timing Parameter Definitions in Burst Mode Sequence
9. RSSI Timing Sequence
11. Pin Definitions
|
Pin#
|
Name
|
Function
|
|
1
|
VeeT
|
Transmitter Ground
|
|
2
|
TX_Fault
|
Transmitter Fault Indication, LVTTL Output, Active High
|
|
3
|
TX_Disable
|
Transmitter Disable, LVTTL Input. Optical output power is off when this PIN is high or left unconnected.
|
|
4
|
SDA
|
I2C Data
|
|
5
|
SCL
|
I2C Clock
|
|
6
|
MOD-DEF(0)
|
Internally grounded
|
|
7
|
RSSI_Trigger
|
RSSI Trigger Signal from Host, LVTTL input, Active High.
|
|
8
|
LOS
|
Loss of Signal, LVTTL Output, Low: Signal Detected. High: Los of Signal
|
|
9
|
VeeR
|
Receiver Ground
|
|
10
|
VeeR
|
Receiver Ground
|
|
11
|
VeeR
|
Receiver Ground
|
|
12
|
RD-
|
Inv. Received Data Out, LVPECL,DC coupled
|
|
13
|
RD+
|
Received Data Out, LVPECL,DC coupled
|
|
14
|
VeeR
|
Receiver Ground
|
12. Outline Drawing
| Key Attributes | |
|---|---|
| Type | FTTx Solutions |
| Industry-specific Attributes | |
| Model Number | PX20++++ |
| Place of Origin | Guangdong, China |
| Brand Name | OEM |
| Name | EPON SFP |
| Material | Metal |
| Colour | White |
| TX Central Wavelength | 1480-1500 |
| Use | FTTX |
| Optical Transmitter Power | 8 dB |
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