Finisar
© Finisar Corporation November 21, 2007 Rev. B Page 1
Product Specification
8.5 Gb/s Short-Wavelength SFP+ Transceiver
FTLF8528P2BNV
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
Extended operating temperature
range: -5°C to 85°C
APPLICATIONS
Tri-Rate 2.125/4.25/8.5 Gb/s Fibre
Channel
Finisar’s FTLF8528P2BNV 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. 7.001 and SFF-8472 Rev 10.13, and compatible with SFF-84322 and applicable
portions of SFF-8431 Rev. 1.34. The product is RoHS compliant and lead-free per
Directive 2002/95/EC5 and Finisar Application Note AN-2038.
PRODUCT SELECTION
FTLF8528P2BNV
Finisar
FTLF8528P2BNV Pluggable SFP+ Product Specification – November 2007
© Finisar Corporation November 21, 2007 Rev. B Page 2
I. Pin Descriptions
Pin Symbol Name/Description Ref.
1 VEET Transmitter Ground (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 Bandwidth)
8.5 Gb/s Fibre Channel (High Bandwidth)
5
8 LOS Loss of Signal indication. Logic 0 indicates normal operation. 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 Ground (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 Ground (Common with Receiver Ground) 1
Notes:
1. Circuit ground is internally isolated from chassis ground.
2. TFAULT is an open collector/drain output, which should be pulled up with a 4.7k – 10k Ohms resistor on
the host board if intended for use. Pull up voltage should be between 2.0V to Vcc + 0.3V. A high
output indicates 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 pulls 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. 10.13. Rx Rate
Select is set at Bit 3, Byte 110, Address A2h. Tx Rate Select is set at Bit 3, Byte 118, Address A2h.
Note: writing a “1” selects maximum bandwidth operation. Rate select is the logic OR of the input
state of Rate Select Pin and 2-wire bus.
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 operation; logic 1 indicates loss of signal.
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FTLF8528P2BNV Pluggable SFP+ Product Specification – November 2007
© Finisar Corporation November 21, 2007 Rev. B Page 3
Diagram of Host Board Connector Block Pin Numbers and Names
II. 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 -5 85
°C
Relative Humidity (Non-condensing) RH 0 85 %
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FTLF8528P2BNV Pluggable SFP+ Product Specification – November 2007
© Finisar Corporation November 21, 2007 Rev. B Page 4
III. Electrical Characteristics (TA = -5 to 85 °C, VCC = 3.0 to 3.6 Volts)
Parameter Symbol Min Typ Max Unit Ref.
Supply Voltage Vcc 3.0 3.6 V
Supply Current Icc 240 mA
Transmitter
Input differential 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 Vout,pp 170 400 mV 3
Data Output Rise/Fall Time @ 2.125, 4.25 Gb/s tr/ tf 120 ps 4
Data Output Rise/Fall Time @ 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 Contribution @ 2.125 Gb/s RX
Δ
DJ 47.1 ps
Total Jitter Contribution @ 2.125 Gb/s RX
Δ
TJ 123.5 ps 7
Deterministic Jitter Contribution @ 4.25 Gb/s RX
Δ
DJ 23.5 ps
Total Jitter Contribution @ 4.25 Gb/s RX
Δ
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
Total 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 circuit.
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 measured with TJ-free data input signal. In actual application, output TJ will be given by:
()()
22 DJTJDJTJDJDJTJ INININOUT Δ−Δ+−+Δ+=
8. As defined in FC-PI-41, Rev 7.0, Table 13, 800-Mx-SN-y.
Finisar
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FTLF8528P2BNV Pluggable SFP+ Product Specification – November 2007
© Finisar Corporation November 21, 2007 Rev. B Page 5
IV. Optical Characteristics (TA = -5 to 85 °C, VCC = 3. 0 to 3.6 Volts)
Parameter Symbol Min Typ Max Unit Ref.
Transmitter
Output Opt. Pwr: 50 or 62.5 MMF POUT -9 -2 dBm 1
Optical Wavelength λ 830 860 nm
Spectral Width σ 0.65 nm
Optical Modulation Amplitude @ 2.125 Gb/s OMA 196 μW 2
Optical Modulation Amplitude @ 4.25 Gb/s OMA 247 μW 2
Optical Modulation Amplitude @ 8.5 Gb/s OMA 302 μW 2
Optical Rise/Fall Time @ 2.125, 4.25 Gb/s tr/ tf 90 ps 3
Transmitter Waveform and Dispersion Penalty
@ 8.5 Gb/s TWDP 4.2 dB 4
Relative Intensity Noise RIN -128 dB/Hz
Deterministic Jitter Contribution @ 2.125 Gb/s TX
Δ
DJ 56.5 ps
Total Jitter Contribution @ 2.125 Gb/s TX
Δ
TJ 119.6 ps 5
Deterministic Jitter Contribution @ 4.25 Gb/s TX
Δ
DJ 28.2 ps
Total Jitter Contribution @ 4.25 Gb/s TX
Δ
TJ 59.8 ps 5
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 Return 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. Equivalent extinction ratio specification for Fibre Channel. Allows smaller ER at higher average
power.
3. Unfiltered, 20-80%. Complies with FC 1x and 2x eye mask when filtered.
4. 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.
5. If measured with TJ-free data input signal. In actual application, output TJ will be given by:
()()
22 DJTJDJTJDJDJTJ INININOUT Δ−Δ+−+Δ+=
Finisar
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FTLF8528P2BNV Pluggable SFP+ Product Specification – November 2007
© Finisar Corporation November 21, 2007 Rev. B Page 6
V. 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 data rate.
5. At 8.5 Gb/s Fibre Channel data rate.
VI. Environmental Specifications
Finisar 850nm SFP+ transceivers have an extended operating temperature range from
-5°C to +85°C case temperature.
Parameter Symbol Min Typ Max Units Ref.
Case Operating Temperature Top -5 85 °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.
Finisar
FTLF8528P2BNV Pluggable SFP+ Product Specification – November 2007
© Finisar Corporation November 21, 2007 Rev. B Page 7
VIII. Digital Diagnostic Functions
Finisar FTLF8528P2BNV SFP+ transceivers support the 2-wire serial communication
protocol as defined in the SFP MSA6. It is very closely related to the E2PROM defined in
the GBIC standard, with the same electrical specifications.
The standard SFP serial ID provides access to identification information that describes
the transceiver’s capabilities, standard interfaces, manufacturer, and other information.
Additionally, Finisar SFP transceivers provide a enhanced digital diagnostic 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 interface. When the serial protocol is activated, the serial clock
signal (SCL, Mod Def 1) is generated 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 documentation3,6 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.
Finisar
Dynamic Range for Rated Accuracy
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FTLF8528P2BNV Pluggable SFP+ Product Specification – November 2007
© Finisar Corporation November 21, 2007 Rev. B Page 8
IX. Digital Diagnostic Specifications
FTLF8528P2BNV 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 DDTemperature 3 ºC
Internally measured transceiver
supply voltage DDVoltage 100 mV
Measured TX bias current DDBias 10 % 1
Measured TX output power DDTx-Power 2 dB
Measured RX received average
optical power DDRx-Power 2 dB
Dynamic Range for Rated Accuracy
Internally measured transceiver
temperature DDTemperature -5 85 ºC
Internally measured transceiver
supply voltage DDVoltage 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 DDRx-Power -18 0 dBm
Max Reporting Range
Internally measured transceiver
temperature DDTemperature -40 125 ºC
Internally measured transceiver
supply voltage DDVoltage 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 DDRx-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.
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FTLF8528P2BNV Pluggable SFP+ Product Specification – November 2007
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X. Mechanical Specifications
Finisar’s FTLF8528P2BNV SFP+ transceivers are compatible with the SFF-84322
specification for improved pluggable form factor.
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XI. PCB Layout and Bezel Recommendations
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FTLF8528P2BNV Pluggable SFP+ Product Specification – November 2007
© Finisar Corporation November 21, 2007 Rev. B Page 11
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FTLF8528P2BNV Pluggable SFP+ Product Specification – November 2007
© Finisar Corporation November 21, 2007 Rev. B Page 12
XII. References
1. “Fibre Channel Physical Interface-4 Specification (FC-PI-4 Rev. 7.00)”.
American National Standard for Information Systems, September 20, 2007.
2. “Improved Pluggable Formfactor”, SFF Document Number SFF-8432, Revision
5.0, July 16, 2007.
3. “Digital Monitoring Interface for Optical Transceivers”, SFF Document Number
SFF-8472, Revision 10.2, June 1, 2007.
4. “Enhanced Specification for 8.5 and 10 Gigabit Small Form Factor Pluggable
Module ‘SFP+ ‘”, SFF Document Number SFF-8431, Revision 2.1, August 30,
2007.
5. 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.
6. 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
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