Finisar
Product Specification
4.25 Gigabit RoHS Compliant CWDM SFP Transceiver
FWLF1625P2Lxx
PRODUCT FEATURES
Up to 4.25 Gb/s bi-directional
data links
Hot-pluggable SFP footprint
Built-in digital diagnostic functions
CWDM DFB laser transmitter
Duplex LC connector
RoHS compliant
Up to 80 km on 9/125 m SMF at
4.25 Gb/s with BER=1E-12
Single 3.3V power supply
Commercial operating temperature
range: -5°C to 75°C
APPLICATIONS
Metro Access Rings and Point-to-
Point networking for Gigabit
Ethernet and Fibre Channel
Link concatenation/aggregation
Finisar’s FWLF1625P2yxx Small Form Factor Pluggable (SFP) transceiver is compatible
with the Small Form Factor Pluggable Multi-Sourcing Agreement (MSA)
1
. The
transceiver is designed for operation in Metro Access Rings and Point-to-Point networks
using Fibre Channel
2
, Gigabit Ethernet
3
, or SONET networking equipment by selecting
the appropriate line rate. The FWLF1625P2yxx available in eight different CWDM
wavelengths; and is RoHS compliant and lead-free per Directive 2002/95/EC
4
and Finisar
Application Note AN-2038.
Finisar Corporation April, 2012 Rev K
Page 1
Finisar
PRODUCT SELECTION
FWLF1625P2Lxx
L
xx
Non Rate Selectable - 1x, 2x, 4x Fibre Channel
CWDM Wavelength (see table below)
Wavelength
1471 nm
1491 nm
1511 nm
1531 nm
xx
47
49
51
53
Clasp Color
Code
Gray
Violet
Blue
Green
Wavelength
1551 nm
1571 nm
1591 nm
1611 nm
xx
55
57
59
61
Clasp Color
Code
Yellow
Orange
Red
Brown
Finisar Corporation April, 2012 Rev K, Preliminary
Page 2
FWLF1625P2yxx SFP Product Specification – April 2012
Finisar
I.
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Pin Descriptions
Symbol
V
EET
T
FAULT
T
DIS
MOD_DEF(2)
MOD_DEF(1)
MOD_DEF(0)
Rate Select
LOS
V
EER
V
EER
V
EER
RD-
RD+
V
EER
V
CCR
V
CCT
V
EET
TD+
TD-
V
EET
Name/Description
Transmitter Ground (Common with Receiver Ground)
Transmitter Fault. Not supported.
Transmitter Disable. Laser output disabled on high or open.
Module Definition 2. Data line for Serial ID.
Module Definition 1. Clock line for Serial ID.
Module Definition 0. Grounded within the module.
Unused
Loss of Signal indication. Logic 0 indicates normal operation.
Receiver Ground (Common with Transmitter Ground)
Receiver Ground (Common with Transmitter Ground)
Receiver Ground (Common with Transmitter Ground)
Receiver Inverted DATA out. AC Coupled
Receiver Non-inverted DATA out. AC Coupled
Receiver Ground (Common with Transmitter Ground)
Receiver Power Supply
Transmitter Power Supply
Transmitter Ground (Common with Receiver Ground)
Transmitter Non-Inverted DATA in. AC Coupled.
Transmitter Inverted DATA in. AC Coupled.
Transmitter Ground (Common with Receiver Ground)
Ref.
1
2
3
3
3
4
5
1
1
1
1
1
1
Notes:
1. Circuit ground is internally isolated from chassis ground.
2. Laser output disabled on
T
DIS
>2.0V or open, enabled on
T
DIS
<0.8V.
3. Should be pulled up with 4.7k - 10 kohms on host board to a voltage between 2.0V and
3.6V.
MOD_DEF(0) pulls line low to indicate module is plugged in.
4. LOS is open collector output. Should be pulled up with 4.7k – 10 kohms on host board to a voltage
between 2.0V and
3.6V.
Logic 0 indicates normal operation; logic 1 indicates loss of signal.
VeeT
1
2
3
4
VeeT
TD-
TXFault
TD+
TX Disable
VeeT
MOD-DEF(2)
VccT
16
15
14
13
12
11
MOD-DEF(1)
VccR
6
7
8
9
10
MOD-DEF(0)
VeeR
Rate Select
RD+
LOS
RD-
VeeR
VeeR
VeeR
17
18
19
20
Towards
Bezel
5
Towards
ASIC
Pinout of Connector Block on Host Board
II.
Absolute Maximum Ratings
Parameter
Maximum Supply Voltage
Storage Temperature
Symbol
Vcc
T
S
Min
-0.5
-40
Typ
Max
4.5
85
Unit
V
C
Ref.
Finisar Corporation April, 2012 Rev K, Preliminary
Page 3
FWLF1625P2yxx SFP Product Specification – April 2012
Finisar
75
85
C
%
Case Operating Temperature
Relative Humidity
T
OP
RH
-5
0
1
III.
Electrical Characteristics (T
OP
= -5 to 75 C, V
CC
= 3.1 to 3.5 Volts)
Symbol
Vcc
Icc
R
in
Vin,pp
V
D
V
EN
Min
3.135
Typ
Max
3.465
350
Unit
V
mA
Ref.
Parameter
Supply Voltage
Supply Current
Transmitter
Input differential impedance
Single ended data input swing
Transmit Disable Voltage
Transmit Enable Voltage
Transmit Disable Assert Time
Receiver
Single ended data output swing
Data output rise/fall time < 4.25 Gb/s
Data output rise/fall time = 4.25 Gb/s
LOS Fault
LOS Normal
Power Supply Rejection
Deterministic Jitter Contribution
< 4.25 Gb/s
Total Jitter Contribution < 4.25 Gb/s
Deterministic Jitter Contribution
= 4.25 Gb/s
Total Jitter Contribution = 4.25 Gb/s
100
125
Vcc – 1.3
Vee
800
Vcc
Vee+ 0.8
10
470
175
120
Vcc
HOST
Vee+0.5
51.7
122.4
25.9
61.2
mV
V
V
us
mV
ps
ps
V
V
mVpp
ps
ps
ps
ps
2
3
Vout,pp
t
r,
t
f
t
r,
t
f
V
LOS fault
V
LOS norm
PSR
RX
DJ
RX
RX
RX
TJ
DJ
TJ
300
Vcc – 0.5
Vee
100
4
5
5
6
6
7
8
8
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)
1
, September 14, 2000.
8. Measured with DJ-free data input signal. In actual application, output DJ will be the sum of input DJ
and
DJ.
Finisar Corporation April, 2012 Rev K, Preliminary
Page 4
FWLF1625P2yxx SFP Product Specification – April 2012
Finisar
IV.
Optical Characteristics (T
OP
= -5 to 75 C, V
CC
= 3.1 to 3.5 Volts)
Parameter
Symbol
P
O,RH
P
O,RL
Min
+1
+1
X-6.5
4.5
DJ
TJ
DJ
TJ
-120
28.2
59.8
56.5
119
5.6
-8
1620
-26
-42
0.5
Typ
Max
+5
+5
X+6.5
1
Unit
dBm
dBm
nm
nm
dB
dB/Hz
ps
ps
ps
ps
uW
dBm
nm
dB
dBm
dBm
dB
Ref.
1
2,3
4
Transmitter
Output Opt. Power (Rate Select High)
Output Opt. Power (Rate Select Low)
Optical Wavelength
Spectral Width
Optical Extinction Ratio
RIN
Deterministic Jitter Contribution = 4.25 Gb/s
Total Jitter Contribution = 4.25 Gb/s
Deterministic Jitter Contribution 2.125 Gb/s
Total Jitter Contribution 2.125 Gb/s
Receiver
Receiver Sensitivity = 4.25 Gb/s
Average Received Power
Optical Center Wavelength
Return Loss
LOS De-Assert
LOS Assert
LOS Hysteresis
X
ER
TX
TX
TX
TX
5
5
R
SENS4
Rx
MAX
C
6
1260
12
LOS
D
LOS
A
7
8
Notes:
1. High Bandwidth Mode. Class 1 Laser Safety per FDA/CDRH and EN (IEC) 60825 regulations.
2. Low Bandwidth Mode. Class 1 Laser Safety per FDA/CDRH and EN (IEC) 60825 regulations.
3. Applicable for rate selectable version only in low bandwidth mode.
4. Over case temperature of -5 to 75 °C. The Transmitter Center Wavelength “X” is as specified by the
customer. The current available wavelengths are: 1471, 1491, 1511, 1531, 1551, 1571, 1591, and 1611
nm. Please see the “Product Selection” section on page 2.
5. Measured with DJ-free data input signal. In actual application, output DJ will be the sum of input DJ
and
DJ.
6. Measured with conformance signals defined in FC-PI-2 Rev. 10.0 specifications. Value in OMA.
Measured with PRBS 2
7
-1 at 10
-12
BER.
7.
ER of Reference TX >= 6dB
8.
ER of Reference TX <= 6dB
V.
General Specifications
Parameter
Symbol
BR
BER
DP
Min
1062
Typ
Max
4250
10
-12
3
Units
Ref.
Mb/sec 1
2
dB
3
Data Rate
Bit Error Rate
Dipsersion Penalty at 4.25Gpbs,
80km 9/125um SMF
Notes:
1. Gigabit Ethernet and 1x/2x/4x Fibre Channel compliant.
2. Tested with a PRBS 2
7
-1 test pattern @4.25G
3. With 80km SMF (1600ps/nm), @BER=1E-12, max case T=75
o
C
Finisar Corporation April, 2012 Rev K, Preliminary
Page 5
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