Finisar Corpor ation August 2015 Rev. B1 Page 1
Product Specification
8.5 Gb/s Short-Wavelength SFP+ Transceiver
FTLF8528P3BxV
PRODUCT FEATURES
Up to 8.5 Gb/s bi-directional
data links
Hot-pluggable SFP+ footprint
Built-in digital diagnostic functions
850nm Oxide VCSEL laser
transmitter
Duplex LC connector
RoHS compliant and Lead Free
50m on 50/125µm MMF
150m on high-bandwidth
50/125um (OM3) MMF
Metal enclosure, for lower EMI
Single 3.3V power supply
< 0.5W power dissipation
Extended operating temperature
range: -5°C to 85°C
APPLICATIONS
Tri-Rate 2.125/4.25/8.5 Gb/s Fibre
Channel
Wireless – CPRI
Wireless - OBSAI
Finisar’s FTLF8528P3BxV SFP+ transceivers are designed for use in Fibre Channel links
up to 8.5 Gb/s data rate over multimode fiber. They are compliant with FC-PI-4 Rev.
8.00a and SFF-8472 Rev 11.0c, and compatible with SFF-8432b and applicable portions
of SFF-8431 Rev. 4.1d. The optical transceivers are compliant per the RoHS Directive
2011/65/EU. See Finisar Application Note AN-2038 for more details.
PRODUCT SELECTION
FTLF8528P3BxV
x
N
Extended Temperature, -5C to 85oC
C
Commercial Temperature, -5 to 70oC
FTLF8528P3BxV Pluggable SFP+ Product Specification
Finisar Corpor ation August 2015 Rev. B1 Page 2
4. Pin Descriptions
Pin
Symbol
Name/Description
Ref.
1
VEET
Transmitter Gro und (Common with Receiver Ground)
1
2
TFAULT
Transmitter Fault.
2
3
TDIS
Transmitter Disable. Laser output disabled on high or open.
3
4
SDA
2-wire Serial Interface Data Line (MOD-DEF2)
4
5
SCA
2-wire Serial Interface Clock (MOD-DEF1)
4
6
MOD_ABS
Module Absent, connected to VEET or VEER
4
7
RS0
Rx Rate Select:
Open or Low =
High =
2.125 or 4.25 Gb/s Fibre Channel (Low Bandwid th )
8.5 Gb/s Fibre Channel (High Bandwidth)
5
8
LOS
Loss of Signal ind ica tion. Logic 0 indicates no rmal opera tion.
6
9
RS1
Tx Rate Select:
Open or Low =
High =
2.125 or 4.25 Gb/s Fibre Channel (Low Bandwidth)
8.5 Gb/s Fibre Channel (High Bandwidth)
5
10
VEER
Receiver Ground (Common with Transmitter Ground)
1
11
VEER
Receiver Ground (Common with Transmitter Ground)
1
12
RD-
Receiver Inverted DATA out. AC Coupled
13
RD+
Receiver Non-inverted DATA out. AC Coupled
14
VEER
Receiver Ground (Common with Transmitter Ground)
1
15
VCCR
Receiver Power Supply
16
VCCT
Transmitter Power Supply
17
VEET
Transmitter Gro und (Common with Receiver Ground)
1
18
TD+
Transmitter Non-Inverted DATA in. AC Coupled.
19
TD-
Transmitter Inverted DATA in. AC Coupled.
20
VEET
Transmitter Gro und (Common with Receiver Ground)
1
Notes:
1. Circuit ground is in te rnally isola te d from chassi s gro und.
2. TFAULT is an open collector/drain output, which should be pulled up with a 4.7k – 10k O hms resistor on the host board if
intended for use. Pull up voltage should b e between 2.0V to Vcc + 0.3V. A high output i ndic a te s a transmitter fault
caused by either the TX bias current or the TX output power exceeding the preset alarm thresholds. A low output
indicates normal operation. In the low state, the output is pulled to <0.8V.
3. Laser output disabled on TDIS >2.0V or open, enabled on TDIS <0.8V.
4. Should be pulled up with 4.7k – 10kohms on host board to a voltage between 2.0V and 3.6V.
MOD_ABS p ulls line low to indicate module is plugged in.
5. Rate select can also be set through the 2-wire bus in accordance with SFF-8472 v. 11.0c. Rx Rate Select is set at Bit 3,
B yte 110, Address A2h. Tx Rate Se le c t is set at Bit 3, Byte 118, Address A2h. Note : writing a “1” s el ec t s ma xi mum
bandwidth operation. Rate select is the logic OR of the input state of Rate Select Pin and 2-wire bu s.
6. LOS is open collector output. Should be pulled up with 4.7k – 10kohms on host board to a voltage between 2.0V and
3.6V. Logic 0 indicates normal oper a tion; logic 1 indicates loss of signal.
FTLF8528P3BxV Pluggable SFP+ Product Specification
Finisar Corpor ation August 2015 Rev. B1 Page 3
Diagram of Host Board Connector Block Pin Numbers and Names
4. Absolute Maximum Ratings
Parameter
Symbol
Min
Typ
Max
Unit
Ref.
Maximum Supply Voltage
Vcc
-0.5
4.0
V
Storage Temperature
TS
-40
85
°C
Case Operating Temperature
TA
°C
Commercial Temperature
Extended Temperature
-5
-5
70
85
Relative Humidity (Non-condensing)
RH
0
85
%
FTLF8528P3BxV Pluggable SFP+ Product Specification
Finisar Corpor ation August 2015 Rev. B1 Page 4
III. Electrical Characteristics (TA, VCC = 3.15 to 3.46 Volts)
Parameter
Symbol
Min
Typ
Max
Unit
Ref.
Supply Voltage
Vcc
3.15
3.45
V
Supply Current
Icc
180
mA
Transmitter
Input differen tia l impedance
Rin
100
Ω
1
Single ended data input swing
Vin,pp
90
800
mV
Transmit Disable Voltage
VD
2
Vcc
V
2
Transmit Enable Voltage
VEN
Vee
Vee+ 0.8
V
Receiver
Single ended data output swing RS=’1’
Vout,pp
185
425
mV
3
Single ended data output swing RS=’0’
Vout,pp
185
800
mV
3
Data Output Ri se/Fa ll Ti me @ 2. 125, 4.25 Gb/s
tr/ tf
120
ps
4
Data Output Ri se/Fa ll Ti me @ 8. 5 Gb/s
tr/ tf
60
ps
4
LOS Fault
VLOS fault
2
VccHOST
V
5
LOS Normal
VLOS norm
Vee
Vee+0.8
V
5
Power Supply Rejection
PSR
100
mVpp
6
Deterministic Jitter Contrib ution @ 2. 125 Gb /s
RX
∆
DJ
47.1
ps
Total Jitter Contribution @ 2.125 Gb/s
RX
∆
TJ
123.5
ps
7
Deterministic Jitter Contrib ution @ 4. 25 Gb/s
RX
∆
DJ
23.5
ps
Tota l Jitter Contribution @ 4 . 25 Gb/s
RX
∆
TJ
61.8
ps
8
Deterministic Jitter @ 8.5 Gb/s
RX DJ
49.4
ps
8
Pulse Width Shrinkage @ 8.5 Gb/s
RX
DDPWS
42.4
ps
8
Tota l Jitter @ 8.5 Gb /s
RX TJ
83.5
ps
8
Notes:
1. Connected directly to TX data input pins. AC coupling from pins into laser driver IC.
2. Or open circ uit.
3. Into 100 ohms differential termination.
4. Unfiltered, 20 – 80 %
5. LOS is an open collector output. Should be pulled up with 4.7k – 10kohms on the host board. Normal operation is logic
0; loss of signal is logic 1. Maximum pull-up voltage is 5.5V.
6. Receiver sensitivity is compliant with power supply sinusoidal modulation of 20 Hz to 1.5 MHz up to specified value
applied through the recommended power supply filtering network.
7. If measur e d wit h T J -free data inp ut signal. In actual application, outp ut TJ will be gi ven by:
() ( )
2
2DJTJ
DJTJDJ
DJTJ INININ
OUT ∆−
∆+−+
∆+=
8. As de fined in FC-PI-41, Rev 8.0, Table 12, 800-Mx-SN-y.
FTLF8528P3BxV Pluggable SFP+ Product Specification
Finisar Corpor ation August 2015 Rev. B1 Page 5
VI. Optical Characteristics (TA, VCC = 3.15 to 3.46 Volts)
Parameter
Symbol
Min
Typ
Max
Unit
Ref.
Transmitter
Output Opt. Pwr: 50 or 62.5 MMF
POUT
-8.2
-2
dBm
1
Optical Wavelength
λ
840
860
nm
Spectral Width
σ
0.65
nm
Optical Modulation Amplitude @ 2.125 Gb/s
OMA
196
µW
Optical Modulation Amplitude @ 4.25 Gb/s
OMA
247
µW
Optical Modulation Amplitude @ 8.5 G b/s
OMA
302
µW
Optical Rise/Fa ll Ti me @ 2.125, 4.25 Gb/s
tr/ tf
90
ps
2
Transmitter Waveform and Dispersion Penalty
@ 8.5 Gb/s
TWDP
4.2
dB
3
Relative Inte nsity Noise
RIN
-128
dB/Hz
Deterministic Jitter Contrib ution @ 2. 125 Gb /s
TX
∆
DJ
56.5
ps
Tota l Jitter Contribution @ 2 .125 Gb/s
TX
∆
TJ
119.6
ps
4
Deterministic Jitter Contrib ution @ 4. 25 Gb/s
TX
∆
DJ
28.2
ps
Tota l Jitter Contribution @ 4 . 25 Gb/s
TX
∆
TJ
59.8
ps
4
Receiver
Receiver OMA Sensitivity = 2.125 Gb/s
RxSENS
49
µW
Receiver OMA Sensitivity = 4.25 Gb/s
RxSENS
61
µW
Receiver OMA Sensitivity = 8.5 Gb/s
RxSENS
76
µW
Average Receiver Power
RxMAX
0
dBm
Optical Center Wavelength
λC
770
860
nm
Optical Ret urn Loss
12
dB
LOS De-Assert
LOSD
-18
dBm
LOS Assert
LOSA
-30
dBm
LOS Hysteresis
0.5
dB
Notes:
1. Class 1 Laser Safety per FDA/CDRH, and EN (IEC) 60825 laser safety standards.
2. Unfiltered, 20-80%. Complies with FC 1x and 2x eye mask when filtered.
3. TWDP is calculated with a 1,0 equalizer and a 6,860 MHz Gaussian filter for the fiber simulation. Jitter values at γT and
γR are controlled by TWDP and stress receiver sensitivity.
4. If measur e d wit h T J -free data inp ut signal. In actual application, outp ut TJ will be gi ven by:
( ) ( )
22 DJTJDJ
TJDJDJ
TJ INININ
OUT ∆−
∆+−+
∆+=
FTLF8528P3BxV Pluggable SFP+ Product Specification
Finisar Corpor ation August 2015 Rev. B1 Page 6
VI. General Specifications
Parameter
Symbol
Min
Typ
Max
Units
Ref.
Data Rate
BR
2.125
4.25
8.5
Gb/sec
1
Bit Error Rate
BER
10-12
2
Fiber Length on 50/125µm MMF
L
300
150
50
m
3
4
5
Fiber Length on 50/125µm high-
bandwidth (OM3) MMF
L
500
380
150
m
3
4
5
Notes:
1. 2x and 4x Fibre Channel compatible, per FC-PI-41.
2. PRBS 27-1.
3. At 2.125 Gb/s Fibre Channel data rate.
4. At 4.25 Gb/s Fibre Channel d a ta r a te .
5. At 8.5 Gb/s Fibre Channel data rate.
VI. Environmental Specifications
Parameter
Symbol
Min
Typ
Max
Units
Ref.
Case Operating Temperature
T
op
°C
Commercial Temperature
Extended Temperature
-5
-5
70
85
Storage Temperature
T
sto
-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. Copy of
certificate is available at Finisar Corporation upon request.
FTLF8528P3BxV Pluggable SFP+ Product Specification
Finisar Corpor ation August 2015 Rev. B1 Page 7
VIII. Digital Diagnostic Functions
Finisar FTLF8528P3BxV SFP+ transceivers support the 2-wire serial communication protocol as
defined in the SFP MSAf. It is very closely related to the E2PROM defined in the GBIC standard, with
the same electrical specifications.
The stan dard SFP ser ial ID provi des access to ident ification i nformation t hat describ es the trans ceiver’s
capabilities, standard interfaces, manufacturer, and other information.
Additionally, Finisar SFP transceivers provide a enhanced digital diagnost ic monitoring interface, which
allows real-time access to device operating parameters such as transceiver temperature, laser bias
current, transmitted optical power, received optical power and transceiver supply voltage. It also defines
a sophisticated system of alarm and warning flags, which alerts end-users when particular operating
parameters are outside of a factory set normal range.
The SFP MSA defines a 256-byte memory map in E2PROM that is accessible over a
2-wire serial interface at the 8 bit address 1010000X (A0h). The digital diagnostic monitoring interface
makes use of the 8 bit address 1010001X (A2h), so the originally defined serial ID memory map
remains unchanged. The interface is identical to, and is thus fully backward compatible with both the
GBIC Specification and the SFP Multi Source Agreement. The complete interface is described in Finisar
Application Note AN-2030: “Digital Diagnostics Monitoring Interface for SFP Optical Transceivers”.
The operating and diagnostics information is monitored and reported by a Digital Diagnostics
Transceiver Controller (DDTC) inside the transceiver, which is accessed through a 2-wire serial
interfac e. W hen t he s erial pr ot ocol i s a ct iv ated , t h e s eri al clo ck s ign al (S C L, M od D e f 1) i s gen erated by
the host. The positive edge clocks data into the SFP transceiver into those segments of the E2PROM
that are not write-protected. The negative edge clocks data from the SFP transceiver. The serial data
signal (SDA, Mod Def 2) is bi-directional for serial data transfer. The host uses SDA in conjunction
with SCL to mark the start and end of serial protocol activation. The memories are organized as a series
of 8-bit data words that can be addressed individually or sequentially.
For more information, please see the SFP MSA documentationc,f and Finisar Application Note AN-
2030.
Please note that evaluation board FDB-1027 is available with Finisar ModDEMO software that allows
simple to use communication over the 2-wire serial interface.
FTLF8528P3BxV Pluggable SFP+ Product Specification
Finisar Corpor ation August 2015 Rev. B1 Page 8
IX. Digital Diagnostic Specifications
FTLF8528P3BxV transceivers can be used in host systems that require either internally or externally
calibrated digital diagnostics.
Parameter
Symbol
Min
Typ
Max
Units
Ref.
Accuracy
Internally measured transceiver
temperature
DD
Temperature
3
ºC
Internally measured transceiver
suppl y voltage
DD
Voltage
100
mV
Measured TX bias current
DDBias
10
%
1
Measured TX output power
DDTx-Power
2
dB
Measured RX received average
optical power
DD
Rx-Power
2
dB
Dynamic Range for Rated Accuracy
Internally measured transceiver
temperature
DD
Temperature
-5
85
ºC
Internally measured transceiver
suppl y voltage
DD
Voltage
3.0
3.6
V
Measured TX bias current
DDBias
0
20
mA
Measured TX output power
DDTx-Power
-9
-2
dBm
Measured RX received average
optical power
DD
Rx-Power
-18
0
dBm
Max Reporting Range
Internally measured transceiver
temperature
DD
Temperature
-40
125
ºC
Internally measured transceiver
suppl y voltage
DD
Voltage
2.8
4.0
V
Measured TX bias current
DDBias
0
20
mA
Measured TX output power
DDTx-Power
-10
-2
dBm
Measured RX received average
optical power
DD
Rx-Power
-20
0
dBm
Notes:
1. Accuracy of Measured Tx Bias Current is 10% of the actual Bias Current from the laser driver to the laser.
FTLF8528P3BxV Pluggable SFP+ Product Specification
Finisar Corpor ation August 2015 Rev. B1 Page 9
X. Mechanical Specifications
Finisar’s FTLF8528P3BxV SFP+ transceivers are compatible with the SFF-84322 specification for
improved pluggable form factor.
FTLF8528P3BxV
FTLF8528P3BxV Pluggable SFP+ Product Specification
Finisar Corpor ation August 2015 Rev. B1 Page 10
XI. PCB Layout and Bezel Recommendations
FTLF8528P3BxV Pluggable SFP+ Product Specification
Finisar Corpor ation August 2015 Rev. B1 Page 11
FTLF8528P3BxV Pluggable SFP+ Product Specification
Finisar Corpor ation August 2015 Rev. B1 Page 12
XII. References
a. “Fibre Channel Ph ysical Interface-4 Specification (FC-PI-4 Rev. 8.00)”. American National
Standard for Information Systems, May 21, 2008.
b. “Improved Pluggable Form Factor”, SFF Document Number SFF-8432, Revision 5.0, July 16,
2007.
c. “Digital Monitoring Interface for Optical Transceivers”, SFF Document Number SFF-8472,
Revision 11.0.
d. “SFF-8431 Specifications for Enhanced Small Form Factor Pulggable Modules, SFP+”, SFF
Document Number SFF-8431, Revision 4.1, July 6, 2009.
e. Directive 2011/65/EU of the European Council Parliament and of the Council, “on the restriction
of the use of certain hazardous substances in electrical and electronic equipment”. Certain
products may use one or more exemptions as allowed by the Directive.
f. Small Form Factor Pluggable (SFP) Transceiver Multi-source Agreement (MSA), September 14,
2000.
XIII. 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
