F i n i s a r
Finisar Corporation April, 2012 Rev E Page 1
Product Specification
4 Gigabit RoHS Compliant CWDM SFP Transceiver
FWLF1524P2yxx
PRODUCT FEATURES
Up to 4.25Gb/s bi-directional
data links
Hot-pluggable SFP footprint
Built-in digital diagnostic functions
CWDM DFB laser transmitter
Duplex LC connector
RoHS compliant and Lead Free
Up to 30 km on 9/125 m SMF at
4.25 Gb/s
Metal enclosure, for lower EMI
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 FWLF1524P2yxx 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 Channel2 Gigabit Ethernet3 networking equipment by selecting the
appropriate line rate. The FWLF1524P2yxx available in eight different CWDM
wavelengths; and is RoHS compliant and lead-free per Directive 2002/95/EC4 and Finisar
Application Note AN-2038.
F i n i s a r
Finisar Corporation April, 2012 Rev E Page 2
PRODUCT SELECTION FWLF1524P2yxx
L Non Rate Selectable - 1x, 2x, 4x Fibre Channel
V Rate Selectable - 1x, 2x, 4x Fibre Channel and Gigabit Ethernet
xx CWDM Wavelength (see table below)
y
Wavelength
xx
Clasp Color
Code
Wavelength
xx
Clasp Color
Code
1471 nm
47
Gray
1551 nm
55
Yellow
1491 nm
49
Violet
1571 nm
57
Orange
1511 nm
51
Blue
1591 nm
59
Red
1531 nm
53
Green
1611 nm
61
Brown
FWLF1524P2yxx SFP Product Specification – April 2012 F i n i s a r
Finisar Corporation April, 2012 Rev E Page 3
I. Pin Descriptions
Symbol
Name/Description
Ref.
VEET
Transmitter Ground (Common with Receiver Ground)
1
TFAULT
Transmitter Fault. Not supported.
TDIS
Transmitter Disable. Laser output disabled on high or open.
2
MOD_DEF(2)
Module Definition 2. Data line for Serial ID.
3
MOD_DEF(1)
Module Definition 1. Clock line for Serial ID.
3
MOD_DEF(0)
Module Definition 0. Grounded within the module.
3
Rate Select
Open or Low =
High =
1.063 Gb/s or 2.125 Gb/s Fibre Channel, 1.25 Gb/s
Gigabit Ethernet (Low Bandwidth)
2.125 or 4.25 Gb/s Fibre Channel (High Bandwidth)
4
LOS
Loss of Signal indication. Logic 0 indicates normal operation.
5
VEER
Receiver Ground (Common with Transmitter Ground)
1
VEER
Receiver Ground (Common with Transmitter Ground)
1
VEER
Receiver Ground (Common with Transmitter Ground)
1
RD-
Receiver Inverted DATA out. AC Coupled
RD+
Receiver Non-inverted DATA out. AC Coupled
VEER
Receiver Ground (Common with Transmitter Ground)
1
VCCR
Receiver Power Supply
VCCT
Transmitter Power Supply
VEET
Transmitter Ground (Common with Receiver Ground)
1
TD+
Transmitter Non-Inverted DATA in. AC Coupled.
TD-
Transmitter Inverted DATA in. AC Coupled.
VEET
Transmitter Ground (Common with Receiver Ground)
1
Notes:
1. Circuit ground is internally isolated from chassis ground.
2. Laser output disabled on TDIS >2.0V or open, enabled on TDIS <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. Specific information when selecting line rate: Rate selection is done in accordance with SFF
Committee SFF-8079 Draft, Rev.1.6, Table 3. Note that rate select can also be set through 2-wire bus
in accordance with SFF-84726 at Bit 3, Byte 110, Address A2h (note: writing ‘1’ selects full bandwidth
operation). Rate select is the logic OR of the input state of Rate Select Pin and 2-wire bus. Non Rate
Selectable version can operate at 1x, 2x, 4x Fibre Channel independent of rate select pin setting.
5. 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
VeeT
VeeR
VeeR
TD-
TD+
RD+
RD-
VccT
VccR
VeeT
VeeR
TXFault
MOD-DEF(2)
MOD-DEF(1)
MOD-DEF(0)
Rate Select
LOS
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
Towards
ASIC
Towards
Bezel
TX Disable
VeeR
Pinout of Connector Block on Host Board
FWLF1524P2yxx SFP Product Specification – April 2012 F i n i s a r
Finisar Corporation April, 2012 Rev E Page 4
II. Absolute Maximum Ratings
Parameter
Symbol
Min
Typ
Max
Unit
Ref.
Maximum Supply Voltage
Vcc
-0.5
4.5
V
Storage Temperature
TS
-40
85
C
Case Operating Temperature
TOP
-5
75
C
Relative Humidity
RH
0
85
%
1
III. Electrical Characteristics (TOP = -5 to 75 C, VCC = 3.1 to 3.5 Volts)
Parameter
Symbol
Min
Typ
Max
Unit
Ref.
Supply Voltage
Vcc
3.1
3.5
V
Supply Current
Icc
300
mA
Transmitter
Input differential impedance
Rin
100
2
Single ended data input swing
Vin,pp
250
1200
mV
Transmit Disable Voltage
VD
Vcc – 1.3
Vcc
V
3
Transmit Enable Voltage
VEN
Vee
Vee+ 0.8
V
Transmit Disable Assert Time
10
us
Receiver
Single ended data output swing
Vout,pp
250
800
mV
4
Data output rise/fall time < 4.25 Gb/s
tr, tf
175
ps
5
Data output rise/fall time = 4.25 Gb/s
tr, tf
120
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
< 4.25 Gb/s
RX DJ
51.7
ps
8
Total Jitter Contribution < 4.25 Gb/s
RX TJ
122.4
ps
Deterministic Jitter Contribution
= 4.25 Gb/s
RX DJ
25.9
ps
8
Total Jitter Contribution = 4.25 Gb/s
RX TJ
61.2
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)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.
FWLF1524P2yxx SFP Product Specification – April 2012 F i n i s a r
Finisar Corporation April, 2012 Rev E Page 5
IV. Optical Characteristics (TOP = -5 to 75 C, VCC = 3.1 to 3.5 Volts)
Parameter
Symbol
Min
Typ
Max
Unit
Ref.
Transmitter
Output Opt. Power (Rate Select High)
PO,RH
+1
+5
dBm
1
Output Opt. Power (Rate Select Low)
PO,RL
+1
+5
dBm
2
Optical Wavelength
X-6.5
X
X+6.5
nm
3
Spectral Width
1
nm
3
Optical Modulation Amplitude
OMA
290
uW
4
Optical Extinction Ratio (Rate Select High)
ER
4
dB
Optical Extinction Ratio (Rate Select Low)
ER
9
dB
Optical Rise/Fall Time = 4.25 Gb/s
tr/ tf
105
ps
5
Optical Rise/Fall Time 2.125 Gb/s
tr/ tf
160
ps
6
RIN
-118
dB/Hz
Deterministic Jitter Contribution = 4.25 Gb/s
TX DJ
28.2
ps
7
Total Jitter Contribution = 4.25 Gb/s
TX TJ
59.8
ps
Deterministic Jitter Contribution 2.125 Gb/s
TX DJ
56.5
ps
7
Total Jitter Contribution 2.125 Gb/s
TX TJ
119
ps
Receiver
Receiver Sensitivity = 4.25 Gb/s
RSENS4
29
-16.5
uW
dBm
8
9
Receiver Sensitivity = 2.125 Gb/s
RSENS2
15
-20.5
uW
dBm
8
9
Receiver Sensitivity = 1.06 Gb/s
RSENS1
15
-22.0
uW
dBm
8
10
Receiver Sensitivity = 1.25 Gb/s
RSENS-GE
-22
dBm
10
Stressed RX sens. = 1.25 Gb/s
-14.5
dBm
Average Received Power
RxMAX
0
dBm
Receiver Electrical 3dB cutoff freq.
1500
MHz
11
Receiver Electrical 3dB cutoff freq.
2500
MHz
12
Optical Center Wavelength
C
1450
1620
nm
Return Loss
12
dB
LOS De-Assert
LOSD
-19
dBm
LOS Assert
LOSA
-30
dBm
LOS Hysteresis
0.5
dB
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. 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.
4. Equivalent extinction ration specification for Fibre Channel. Allows smaller ER at higher average
power
5. Unfiltered, 20-80% measured w/ a “00001111” pattern. Complies with FC 4x eye mask when filtered.
6. Unfiltered, 20-80% measured w/ a “00001111” pattern. Complies with IEEE 802.3 (Gig. E), FC 1x
and 2x eye masks when filtered.
7. Measured with DJ-free data input signal. In actual application, output DJ will be the sum of input DJ
and DJ.
8. Measured with conformance signals defined in FC-PI-2 Rev. 10.0 specifications. Value in OMA.
Measured with PRBS 27-1 at 10-12 BER.
9. Represents sensitivity at minimum Extinction Ratio with rate select high. Measured with PRBS 27-1 at 10-12 BER.
FWLF1524P2yxx SFP Product Specification – April 2012 F i n i s a r
Finisar Corporation April, 2012 Rev E Page 6
10. Represents sensitivity at minimum Extinction Ratio with rate select low. Measured with PRBS 27-1 at 10-12 BER
11. Rate Selectable version in low bandwidth mode.
12. Rate Selectable version in high bandwidth mode.
V. General Specifications
Parameter
Symbol
Min
Typ
Max
Units
Ref.
Data Rate
BR
1062
4250
Mb/sec
1
Bit Error Rate
BER
10-12
2
Max. Supported Link Length on
9/125 m SMF @ 4X Fibre Channel
LMAX1
30
km
3
Max. Supported Link Length on
9/125 m SMF @ 1X and 2X Fibre
Channel
LMAX2
50
km
3
Max. Supported Link Length on
9/125 m SMF @ Gigabit Ethernet
LMAX3
50
km
3
Notes:
1. Gigabit Ethernet and 1x/2x/4x Fibre Channel compliant.
2. Tested with a PRBS 27-1 test pattern.
3. A 3 dB penalty is included for dispersion on data rates >2Gb/s amd 2dB penalty is included for data
rates <2Gb/s. Distances are indicative only. Please refer to the Optical Specifications in Table IV to
calculate a more accurate link budget based on specific conditions in your application
VI. Environmental Specifications
Parameter
Symbol
Min
Typ
Max
Units
Ref.
Case Operating Temperature
Top
-5
75
°C
Storage Temperature
Tsto
-40
85
°C
VII. Regulatory Compliance
Finisar transceivers are Class 1 Laser Products and comply with US FDA regulations.
These products are certified by TÜV and CSA to meet the Class 1 eye safety
requirements of EN (IEC) 60825 and the electrical safety requirements of EN (IEC)
60950. Copies of certificates are available at Finisar Corporation upon request.
FWLF1524P2yxx SFP Product Specification – April 2012 F i n i s a r
Finisar Corporation April, 2012 Rev E Page 7
VIII. Digital Diagnostic Functions
All Finisar SFPs support the 2-wire serial communication protocol outlined in the SFP
MSA5. These SFPs use an Atmel AT24C01A 128 byte E2PROM with an address of A0h
(see table below for E2PROM contents). For details on interfacing with the E2PROM, see
the Atmel data sheet titled “AT24C01A/02/04/08/16 2-Wire Serial CMOS E2PROM.”6
Finisar’s CWDM SFPs also support extended diagnostic features as described in Finisar
Applications Note AN-2030, “Digital Diagnostic Monitoring Interface for Optical
Transceivers”7, and additional information is available in SFF standard titled: “Digital
Diagnostic Monitoring Interface for Optical Transceivers8 (SFF-8472 rev9.3). A
controller IC that monitors system parameters such as laser current, module temperature,
transmitter power, and received power is accessible at address A2H.
I2C clock speed, digital diagnostic accuracy and digital diagnostic range can be found in
the table below. Values in the table represent the worst-case values over temperature,
voltage, and life.
Parameter
Symbol
Min
Typ
Max
Units
Notes/Conditions
I2C Clock Speed
0
100,000
Hz
Bus can be driven blind
Accuracy
Transceiver
Temperature
DDTemperature
-5
+5
°C
Case temperature
Transceiver Supply
Voltage
DDVoltage
-3
+3
%
Tx Bias Curent
DDBias
-10
+10
%
Tx Output Power
DDTxPower
-3
+3
dB
100% tested in production
over temp to 2 dB
Received Average
Power
DDRxPower
-3
+3
dB
100% tested in production
over temp to 2 dB
Range
Transceiver
Temperature
DDTemperature
-10
80
°C
Transceiver Supply
Voltage
DDVoltage
3.0
4.0
V
Tx Bias Current
DDBias
0
100
mA
Tx Output Power
DDTxPower
-10
+5
dBm
Received Average
Power
DDRxPower
-25
+1
dBm
FWLF1524P2yxx SFP Product Specification – April 2012 F i n i s a r
Finisar Corporation April, 2012 Rev E Page 8
IX. Mechanical Specifications
Finisar’s Small Form Factor Pluggable (SFP) transceivers are compatible with the
dimensions defined by the SFP Multi-Sourcing Agreement (MSA) 1.
FWLF1524P2Vxx Outline Drawing
FWLF1524P2yxx SFP Product Specification – April 2012 F i n i s a r
Finisar Corporation April, 2012 Rev E Page 9
X. PCB Layout and Bezel Recommendations
FWLF1524P2yxx SFP Product Specification – April 2012 F i n i s a r
Finisar Corporation April, 2012 Rev E Page 10
FWLF1524P2yxx SFP Product Specification – April 2012 F i n i s a r
Finisar Corporation April, 2012 Rev E Page 11
XI. References
1. Small Form-factor Pluggable (SFP) Transceiver Multi-source Agreement (MSA),
September 14, 2000.
2. “Fibre Channel Draft Physical Interface Specification (FC-PI-2 Rev. 10.0)”.
American National Standard for Information Systems.
3. IEEE Std 802.3, 2002 Edition, Clause 38, PMD Type 1000BASE-LX.
IEEE Standards Department, 2002.
4. Directive 2002/95/EC of the European Council Parliament and of the Council,
“on the restriction of the use of certain hazardous substances in electrical and
electronic equipment.” January 27, 2003.
5. Small Form Factor Pluggable (SFP) Transceiver Multi-Source Agreement (MSA),
September 2000. Documentation is currently available at Finisar upon request.
6. “AT24C01A/02/04/08/16 2-Wire Serial CMOS E2PROM”, Atmel Corporation.
www.Atmel.com
7. “Application Note AN-2030: Digital Diagnostic Monitoring Interface for Optical
Transceivers”, Finisar Corporation, April 2002.
8. “Digital Diagnostic Monitoring Interface For Optical Transceivers Rev 9.3”. SFF
Document No. SFF-8472.
XII. For More Information
Finisar Corporation
1389 Moffett Park Drive
Sunnyvale, CA 94089-1133
Tel. 1-408-548-1000
Fax 1-408-541-6138
sales@finisar.com
www.finisar.com