The 1.25G SFP optical module is Small Form Factor Pluggable (SFP) transceivers are compatible with the Small Form Factor Pluggable Multi-Sourcing Agreement (MSA). They simultaneously comply with Gigabit Ethernet as specified in IEEE Std 802.31 and 1x and 2x Fiber Channel as defined in FC-PI 13.03.
The 1000BASE-LX/LH (long wavelength/long haul) SFP module interfaces fully comply with the IEEE 802.3z 1000BASE-LX standard.Their higher optical quality allows them to reach 6.2 miles (10 km) to 62.1 miles(100km) over single-mode fiber (SMF) .
Features:
● Up to 1.25Gb/s bi-directional data links
● Hot-pluggable SFP footprint
● 1310/1550nm FP/DFB, SM Fiber
● Duplex LC connector
● Very low jitter
● Up to 100km on 9/125μm SMF
● Metal enclosure, for lower EMI
● Single 3.3V power supply
● Low power dissipation
Specification
Absolute Maximum Ratings:
|
Parameter
|
Symbol
|
Min
|
Typ
|
Max
|
Unit
|
Ref.
|
|
Maximum Supply Voltage
|
Vcc
|
0.5
|
|
4.5
|
V
|
|
|
Storage Temperature
|
TS
|
-40
|
|
100
|
℃
|
|
|
Case Operating Temperature
|
TOP
|
-40
|
|
85
|
℃
|
|
|
Relative Humidity
|
RH
|
0
|
|
85
|
%
|
1
|
Electrical Characteristics (TOP = -40 to 85 ℃, VCC = 3.00 to 3.60 Volts)
|
Parameter
|
Symbol
|
Min
|
Typ
|
Max
|
Unit
|
Ref.
|
|
Supply Voltage
|
Vcc
|
3.00
|
|
3.60
|
V
|
|
|
Supply Current
|
Icc
|
|
200
|
300
|
mA
|
|
|
Transmitter
|
|
Input differential impedance
|
Rin
|
|
100
|
|
Ω
|
2
|
|
Single ended data input swing
|
Vin,pp
|
250
|
|
1200
|
mV
|
|
|
Transmit Disable Voltage
|
VD
|
Vcc – 1.3
|
|
Vcc
|
V
|
|
|
Transmit Enable Voltage
|
VEN
|
Vee
|
|
Vee+ 0.8
|
V
|
3
|
|
Transmit Disable Assert Time
|
|
|
|
10
|
us
|
|
|
Receiver
|
|
Single ended data output swing
|
Vout,pp
|
300
|
400
|
800
|
mV
|
4
|
|
Data output rise time
|
tr
|
|
100
|
175
|
ps
|
5
|
|
Data output fall time
|
tf
|
|
100
|
175
|
ps
|
5
|
|
LOS Fault
|
VLOS fault
|
Vcc – 0.5
|
|
VccHOST
|
V
|
6
|
|
LOS Normal
|
VLOS norm
|
Vee
|
|
Vee+0.5
|
V
|
6
|
|
Power Supply Rejection
|
PSR
|
100
|
|
|
mVpp
|
7
|
|
Deterministic Jitter Contribution
|
RX Δ DJ
|
|
|
51.7
|
ps
|
8
|
|
Total Jitter Contribution
|
RX Δ TJ
|
|
|
122.4
|
ps
|
|
Notes:
1. Non condensing.
2. AC coupled.
3. Or open circuit.
4. Into 100 ohm differential termination.
5. 20 – 80 %
6. LOS is LVTTL. Logic 0 indicates normal operation; logic 1 indicates no signal detected.
7. All transceiver specifications are compliant with a power supply sinusoidal modulation of 20 Hz to 1.5 MHz up to specified value applied through the power supply filtering network shown on page 23 of the Small Form-factor Pluggable (SFP) Transceiver MultiSource Agreement (MSA), September 14, 2000.
8. Measured with DJ-free data input signal. In actual application, output DJ will be the sum of input DJ and DDJ.
Optical Characteristics (TOP = 0 to 70℃, VCC = 3.00 to 3.60 Volts)
|
Parameter
|
Symbol
|
Min
|
Typ
|
Max
|
Unit
|
Ref.
|
|
Transmitter
|
|
Output Opt. Power
|
POUT
|
-9
|
|
-3
|
dBm
|
1
|
|
Optical Wavelength
|
λ
|
1270
|
1310
|
1360
|
nm
|
2
|
|
Spectral Width
|
σ
|
|
|
3
|
nm
|
2
|
|
Optical Modulation Amplitude
|
OMA
|
174
|
|
|
μW
|
2,3
|
|
Optical Rise/Fall Time
|
tr/ tf
|
|
100
|
160
|
ps
|
4
|
|
RIN
|
|
|
|
-120
|
dB/Hz
|
|
|
Deterministic Jitter Contribution
|
TX Δ DJ |
|
20
|
56.5
|
ps
|
5
|
|
Total Jitter Contribution
|
TX Δ TJ
|
|
70
|
119
|
ps
|
|
|
Optical Extinction Ratio
|
ER
|
9
|
|
|
dB
|
|
|
Receiver
|
|
Average Rx Sensitivity @ 2.125
|
RSENS1
|
|
|
-21
|
dBm
|
6, 7
|
|
Gb/s (2X Fiber Channel)
|
|
|
|
|
|
|
|
Average Rx Sensitivity @ 1.25 Gb/s
|
RSENS2
|
|
|
-22
|
dBm
|
6, 7
|
|
(Gigabit Ethernet)
|
|
|
|
|
|
|
|
Average Rx Sensitivity @ 1.06 Gb/s
|
RSENS1
|
|
|
-22
|
dBm
|
6, 7
|
|
(1X Fiber Channel)
|
|
|
|
|
|
|
|
Stressed RX sens. =1.25 Gb/s
|
|
|
-18
|
-14.5
|
dBm
|
|
|
Average Received Power
|
RxMAX
|
|
|
0
|
dBm
|
|
|
Receiver Elec. 3 dB cutoff freq.
|
|
|
|
1500
|
MHz
|
|
|
Optical Center Wavelength
|
λC
|
1265
|
|
1600
|
nm
|
|
|
Return Loss
|
|
12
|
|
|
dB
|
|
|
LOS De-Assert
|
LOSD
|
|
-23
|
-19
|
dBm
|
|
|
LOS Assert
|
LOSA
|
-30
|
-25
|
|
dBm
|
|
|
LOS Hysteresis
|
|
0.5
|
|
|
dB
|
|
Notes:
1. Class 1 Laser Safety per FDA/CDRH and EN (IEC) 60825 regulations.
2. Also specified to meet curves in FC-PI 13.0 Figures 18 and 19, which allow trade-off between
wavelength, spectral width and OMA.
3. Equivalent extinction ratio specification for Fiber Channel. Allows smaller ER at higher average power.
4. Unfiltered, 20-80%. Complies with IEEE 802.3 (Gig. E), FC 1x and 2x eye masks when filtered.
5. Measured with DJ-free data input signal. In actual application, output DJ will be the sum of input DJ and DDJ.
6. Measured with conformance signals defined in FC-PI 13.0 specifications.
7. Measured with PRBS 27-1 at 10-12 BER
Q&A
Question1: Is SFP module compatible with Zyxel, 3Com, Cisco and Huawei?
Answer: No, SFP module is compatible with Zyxel, 3Com and Cisco. For Huawei, it can only be compatible with the old models, because some new devices (such as S6800 series) requires special compatibility code.
