Finisar Corpor ation August 2015 Rev. E1 Page 1
Product Specification
6.144 Gigabit RoHS Com pliant Long-Wavelength S FP+ Transceiver
FTLF1326P3BTL
PRODUCT FEATURES
• Up to 6.144 Gb/s bi-directional
data links
• Hot-pluggable SFP+ footprint
• Built-in digital diagnostic functions
• 1310nm Fabry-Perot laser
transmitter
• Duplex LC connector
• RoHS compliant and Lead Free
• Up to 2 km at 6.144 Gb/s on
9/125µm SMF
• Metal enclosure, for lower EMI
• Single 3.3V power supply
• Industrial operating temperature
range: -40°C to 85°C
APPLICATIONS
• 2.457 Gb/s CPRI
• 4.915 Gb/s CPRI/LTE
• 6.144 Gb/s CPRI/OBSAI/LTE
Finisar’s FTLF1326P3BTL SFP+ transceivers are designed for use in Wireless
basestation links up to 2 km at 4.915 and 6.144 Gb/s data rates for CPRI, OBSAI, LTE,
or other Wireless applications. They are compliant with SFF-84322, SFF-8472 Rev
10.23, CPRI Rev 4.17, OBSAI Rev V4.18, and applicable portions of FC-PI-4 Rev. 8.001;
they are also compatible with 1.228 and 2.457 Gb/s data rates for CPRI and applicable
portions of SFF-8431 Rev. 3.04. The optical transceivers are compliant per the RoHS
Directive 2011/65/EU. See Finisar Application Note AN-2038 for more details.
PRODUCT SELECTION
FTLF1326P3BTL
FTLF1326P3BTL Product Specification – August 2015
Finisar Corpor ation August 2015 Rev. E1 Page 2
I. Pin Descriptions
Pin
Symbol
Name/Description
Ref.
1
VEET
Transmitte r Ground (Common with Rec eiver Ground )
1
2
TFAULT
Transmitter Fa ult.
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 =
4.915 to 6.144 Gb/s
4.915 to 6.144 Gb/s
5
8
LOS
Loss of Signal ind ica tion. Logic 0 indic a tes normal opera tion.
6
9
RS1
Tx Rate Select:
Open or Low =
High =
4.915 to 6.144 Gb/s
4.915 to 6.144 Gb/s
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
Transmitte r Ground (Common with Rec eiver Ground )
1
18
TD+
Transmitter Non-Inverted DATA in. AC Coupled.
19
TD-
Transmitte r Inverted DATA in. AC Coupled.
20
VEET
Transmitte r Ground (Common with Rec eiver Ground )
1
Notes:
1. Circuit ground is in te rnally 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 intend ed for use. Pull up voltage should be between 2.0 V 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 opera tion. 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 p lugged in.
5. Rate select can also be set through the 2-wire bus in accordance with SFF-8472 v. 10.2. Rx Rate
Select is set at Bit 3, Byte 110, Addr e ss A2h. Tx Rate Select is set at Bit 3, Byte 118, Add ress A2h.
Note: writing a “1” selects maximum bandwidth operation. Rate select is the logic OR of the input
state of Rate Selec t 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 o f si gnal.
FTLF1326P3BTL Product Specification – August 2015
Finisar Corpor ation August 2015 Rev. E1 Page 3
Pinout of Connector Block on Host Board
II. Absolute Maximum Ratings
Symbol
Min
Typ
Max
Unit
Ref.
Vcc
-0.5
4.5
V
T
S
-40
100
°C
TOP
-40
85
°C
RH
0
85
%
1
III. Electrical Characteristics (TOP = -40 to 85
°
C, VCC = 3.14 to 3.46 Volts)
Parameter
Symbol
Min
Typ
Max
Unit
Ref.
Supply Voltage
Vcc
3.14
3.46
V
2
Supply Current
Icc
300
mA
2
Transmitter
Input differen tia l impedance
Rin
100
Ω
3
Single ended data input swing
Vin,pp
90
350
mV
Transmit Disable Vo ltage
VD
2
Vcc
V
Transmit Enable Vo ltage
VEN
Vee
Vee+ 0.8
V
4
Receiver
Single ended data output swing
Vout,pp
275
425
mV
5
Data output rise/fall time
tr, tf
0.5
UI
6,7
LOS Fault
VLOS fault
2
VccHOST
V
8
LOS Normal
VLOS norm
Vee
Vee+0.8
V
8
Power Supply Rejection
PSR
100
mVpp
9
Note: Jitter values for gamma T and gamma R are controlled by TDP and stressed receiver sensitivity and
comply to FC-PI-4 Rev 8.00.
FTLF1326P3BTL Product Specification – August 2015
Finisar Corpor ation August 2015 Rev. E1 Page 4
Notes:
1. Non-condensing.
2. Module power consumption never exceeds 1W.
3. AC coupled.
4. Or open circ uit.
5. Into 100 ohm differential termination.
6. 20 – 80 %.
7. 80ps at 6.14Gb/s.
8. LOS is LVTTL. Logic 0 indicates normal operation; logic 1 indicates no sig nal detected.
9. All transceiver spe c ifications are compliant with a power supply sinusoida l modulation of 20 Hz to 1.5
MHz up to specified value applied t hrough t he po we r supply filt ering network shown on page 23 of the
Small Form-factor Pluggable (SFP) Transceiver MultiSource Agreement (MSA)6, September 14, 2000.
The Power Supply Rejection applies for a supply voltage range of 3.14 to 3.46 V.
IV. Optical Characteristics (TOP = -40 to 85
°
C, VCC = 3.14 to 3.46 Volts)
Notes:
1. Class 1 Laser Safety per FDA/CDRH and EN (IEC) 60825 regulations.
2. High Bandwidth Mode. Class 1 Laser Safety per FDA/CDRH and EN (IEC) 60825 regulations.
3. Low Bandwidth Mode. Class 1 Laser Safety per FDA/CDRH and EN (IEC) 60825 regulations.
4. Specified to meet c urves in FC-PI-4 Rev 8.001 Figures 22, 24 and 25, which allow trad e-off between
wavelength, spectral width and OMA.
5. Equivalent extinction ra tio specification for Fibre Channel. Allows smaller ER at higher average
power.
6. Jitter values for gamma T and gamma R are controlled by TDP and stressed receiver sensitivity
according to FC-PI-4 Rev. 8.00.
7. Measured with conformance signals defined i n FC-PI-4 Rev. 8.00 specifications. Value in OMA.
Measured with PRBS 27-1 at 10-12 BER.
Parameter
Symbol
Min
Typ
Max
Unit
Ref.
Transmitter
Output Opt. Power
PO
-8.4
-2.5
+0.5
dBm
2
Optical Wavelength
λ
1260
1350
nm
4
Spectral Width
σ
nm
4
Optical Modulation Amplitude
OMA
174
µW
4,5
Transmitter and Dispersion Penalty
TDP
5.2
dB
6
RIN
-128
dB/Hz
Receiver
Unstressed Rece iver OMA Sensit i vity, 6.144 Gb/s
RSENSr
0.042
mW
7
Unstressed Rece iver OMA Sensit i vity, 4.915 Gb/s
RSENS4
0.042
mW
7
Average Received Power
RxMAX
+0.5
dBm
Optical Center Wavelength
λC
1260
1360
nm
Retur n Lo ss
12
dB
LOS De-Assert
LOSD
-19
dBm
LOS Assert
LOSA
-30
dBm
LOS Hysteresis
0.5
dB
FTLF1326P3BTL Product Specification – August 2015
Finisar Corpor ation August 2015 Rev. E1 Page 5
V. General Specifications
Parameter
Symbol
Min
Typ
Max
Units
Ref.
Data Rate
BR
1.228
6.144
Gb/sec
1,2
Bit Error Rate
BER
10-12
3
Max. Supported Link Le ngth on
9/125
µ
m SMF, 4.915, 6. 144 G b/s
L
MAX1
2
km
Notes:
1. 4.915/6.144 Gb/s CPRI/OBSAI/LTE compliant.
2. 1.228/2.457 Gb/s compatible (data rate is supported but not optimized for Rx bandwidth).
3. Tested wit h a PRBS 27-1 test patte rn.
VI. Environmental Specifications
These Finisar 1310nm Extended Temperature SFP+ transceivers have an operating
temperature range from -40 to +85°C case temperature.
Parameter
Symbol
Min
Typ
Max
Units
Ref.
Case Operating Temperature
T
op
-40
85
°C
Storage Temperature
T
sto
-40
100
°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.
FTLF1326P3BTL Product Specification – August 2015
Finisar Corpor ation August 2015 Rev. E1 Page 6
VIII. Digital Diagnostic Functions
Finisar FTLF1326P3BTL 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 unique 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 or Finisar Application
Note AN-2030.
FTLF1326P3BTL transceivers can be used in host systems that require either internally
or externally calibrated digital diagnostics.
Please note that evaluation board FDB-1018 is available with Finisar ModDEMO
software that allows simple to use communication over the 2-wire serial interface.
FTLF1326P3BTL Product Specification – August 2015
Finisar Corpor ation August 2015 Rev. E1 Page 7
IX. Mechanical Specifications
Finisar’s FTLF1326P3BTL SFP+ transceivers are compatible with the SFF-84322
specification for improved pluggable form factor.
FTLF1326P3BTL
FTLF1326P3BTL Product Specification – August 2015
Finisar Corpor ation August 2015 Rev. E1 Page 8
X. PCB Layout and Bezel Recommendations
FTLF1326P3BTL Product Specification – August 2015
Finisar Corpor ation August 2015 Rev. E1 Page 9
FTLF1326P3BTL Product Specification – August 2015
Finisar Corpor ation August 2015 Rev. E1 Page 10
XI. References
1. “Fibre Channel Physical Interface-4 Specification (FC-PI-4 Rev. 8.00)”.
American National Standard for Information Technology, May 21, 2008.
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 3.0, May 8, 2008.
5. 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.
6. Small Form Factor Pluggable (SFP) Transceiver Multi-source Agreement (MSA),
September 14, 2000.
7. “CPRI Specification V4.1”. Common Public Radio Interface. February 18, 2009.
8. “Reference Point 3 Specification”. Open Base Station Architecture Initiative.
July 2008.
XII. For More Information
Finisar Corporation
1389 Moffett Park Drive
Sunnyvale, CA 94089-1134
Tel. 1-408-548-1000
Fax 1-408-541-6138
sales@finisar.com
www.finisar.com
Data subject to change without notice.