Finisar Corporation - 25-Aug-2015 Rev A1 Page 1
Preliminary Product Specification
9.8304 Gigabit RoHS Compliant Long-Wavelength SFP+ Transceiver
FTLX1370W4BTL
PRODUCT FEATURES
Up to 9.8304 Gb/s bi-directional
data links
Hot-pluggable SFP+ footprint
Built-in digital diagnostic functions
Duplex LC connector
RoHS compliant and Lead Free
Up to 1.4 km at 9.8304 Gb/s on
9/125m SMF
Metal enclosure, for lower EMI
Single 3.3V power supply
Industrial operating temperature
range: -40°C to 85°C
1 Watt Maximum Power
Consumption
APPLICATIONS
2.457 Gb/s CPRI
3.072 Gb/s CPRI/LTE
4.915 Gb/s CPRI/LTE
6.144 Gb/s CPRI/OBSAI/LTE
9.8304 Gb/s CPRI/LTE
Finisar’s FTLX1370W4BTL SFP+ transceivers are designed for use in Wireless
basestation links up to 1.4 km at up to 9.8304 Gb/s data rates for CPRI, OBSAI, LTE, or
other Wireless applications. They are compliant with SFF-84311, SFF-84322, SFF-8472
Rev 10.23, CPRI Rev 5.06, and OBSAI Rev V4.27. The optical transceiver is compliant
per the RoHS Directive 2011/65/EU. See Finisar Application Note AN-2038 for more
details.
PRODUCT SELECTION
FTLX1370W4BTL
FTLX1370W4BTL Preliminary Product Specification
Finisar Corporation – 25-Aug-2015 Rev. A1 Page 2
I. Pin Descriptions
Pin
Symbol
Name/Description
Ref.
1
VEET
Transmitter 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
2
5
SCL
2-wire Serial Interface Clock Line
2
6
MOD_ABS
Module Absent. Grounded within the module
2
7
RS0
Rate Select 0. Not Used.
4
8
RX_LOS
Loss of Signal indication. Logic 0 indicates normal operation.
5
9
RS1
Rate Select 1. Not Used.
4
10
VEER
Receiver Ground
1
11
VEER
Receiver Ground
1
12
RD-
Receiver Inverted DATA out. AC Coupled.
13
RD+
Receiver Non-inverted DATA out. AC Coupled.
14
VEER
Receiver Ground
1
15
VCCR
Receiver Power Supply
16
VCCT
Transmitter Power Supply
17
VEET
Transmitter Ground
1
18
TD+
Transmitter Non-Inverted DATA in. AC Coupled.
19
TD-
Transmitter Inverted DATA in. AC Coupled.
20
VEET
Transmitter 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. Internally pulled down per SFF-8431 Rev 4.1.
5. LOS is open collector output. Should be pulled up with 4.7k – 10k on host board to a voltage
between 2.0V and 3.6V. Logic 0 indicates normal operation; logic 1 indicates loss of signal.
Figure 1. Diagram of Host Board Connector Block Pin Numbers and Names.
VeeT
VeeT
VeeR
VeeR
TD-
TD+
RD+
RD-
VccT
VccR
VeeT
VeeR
TX_Fault
SDA
SCL
MOD_ABS
RS0
RX_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
RS1
FTLX1370W4BTL Preliminary Product Specification
Finisar Corporation – 25-Aug-2015 Rev. A1 Page 3
II. Absolute Maximum Ratings
Exceeding the limits below may damage the transceiver module permanently.
Parameter
Symbol
Min
Typ
Max
Unit
Ref.
Maximum Supply Voltage
Vcc
-0.5
4.0
V
Storage Temperature
TS
-40
85
C
Relative Humidity
RH
0
85
%
1
1. Non-condensing.
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
3.30
3.46
V
Supply Current
Icc
430
mA
Transmitter
Input differential impedance
Rin
100
1
Differential data input swing
Vin,pp
180
2400
mV
Transmit Disable Voltage
VD
2
Vcc
V
Transmit Enable Voltage
VEN
Vee
Vee+ 0.8
V
Receiver
Differential data output swing
Vout,pp
300
850
mV
2,6
Output rise time and fall time
Tr, Tf
28
ps
3
LOS Fault
VLOS fault
2
VccHOST
V
4
LOS Normal
VLOS norm
Vee
Vee+0.8
V
4
Power Supply Noise Tolerance
VccT/VccR
Per SFF-8431 Rev 4.1
mVpp
5
Notes:
1. Connected directly to TX data input pins. AC coupling from pins into laser driver IC.
2. Into 100 differential termination.
3. 20 – 80%. Measured with Module Compliance Test Board and OMA test pattern. Use of four 1’s and
four 0’s sequence in the PRBS 9 is an acceptable alternative. SFF-8431 Rev 4.1.
4. LOS is an open collector output. Should be pulled up with 4.7k – 10k on the host board. Normal
operation is logic 0; loss of signal is logic 1.
5. See Section 2.8.3 of SFF-8431 Rev 4.1.
6. The FTLX1370D3BTL is a “limiting module”, i.e., it employs a limiting receiver. Host board designers
using an EDC PHY IC should follow the IC manufacturer’s recommended settings for interoperating
the host-board EDC PHY with a limiting receiver SFP+ module.
FTLX1370W4BTL Preliminary Product Specification
Finisar Corporation – 25-Aug-2015 Rev. A1 Page 4
IV. Optical Characteristics (TOP = -40 to 85 C, VCC3 = 3.14 to 3.46 Volts)
Parameter
Symbol
Min
Typ
Max
Unit
Ref.
Transmitter
Optical Modulation Amplitude
(OMA)
POMA
-5.2
dBm
Average Launch Power
PAVE
-8.2
+0.5
dBm
1
Extinction Ratio
R
3.5
dB
Optical Wavelength
1260
1355
nm
Transmitter and Dispersion Penalty
TDP
3.4
dB
Average Launch power of OFF
transmitter
POFF
-30
dBm
Tx Jitter
Txj
Per 802.3ae requirements
Relative Intensity Noise
RIN
-128
dB/Hz
Receiver
Receiver Sensitivity (OMA)
@ 9.8304Gb/s
RSENS1
-12.6
dBm
2
Average Receive Power
PAVE
+0.5
dBm
Optical Center Wavelength
C
1260
1600
nm
Receiver Reflectance
Rrx
-12
dB
LOS De-Assert
LOSD
-17
dBm
LOS Assert
LOSA
-30
dBm
LOS Hysteresis
0.5
dB
Notes:
1. Average power figures are informative only, per IEEE 802.3ae.
2. Valid between 1260 and 1355 nm. Measured with worst ER; BER<10-12; 231 – 1 PRBS.
FTLX1370W4BTL Preliminary Product Specification
Finisar Corporation – 25-Aug-2015 Rev. A1 Page 5
V. General Specifications
Parameter
Symbol
Min
Typ
Max
Units
Ref.
Bit Rate
BR
2.4576
9.8304
Gb/s
Bit Error Ratio
BER
10-12
1
Max. Supported Link Length
LMAX
1.4
km
Notes:
1. Tested with a 231 – 1 PRBS.
VI. Environmental Specifications
Finisar FTLX1370W4BTL transceivers have an operating temperature range from -40°C
to +85°C case temperature.
Parameter
Symbol
Min
Typ
Max
Units
Ref.
Case Operating Temperature
Top
-40
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.
FTLX1370W4BTL Preliminary Product Specification
Finisar Corporation – 25-Aug-2015 Rev. A1 Page 6
VIII. Digital Diagnostic Functions
Finisar FTLX1370W4BTL SFP+ transceivers support the 2-wire serial communication
protocol as defined in the SFP MSA1. 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 documentation1,5 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.
FTLX1370W4BTL Preliminary Product Specification
Finisar Corporation – 25-Aug-2015 Rev. A1 Page 7
IX. Digital Diagnostic Specifications
FTLX1370W4BTL 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
3
%
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
-40
85
ºC
Internally measured transceiver
supply voltage
DDVoltage
3.1
3.5
V
Measured TX bias current
DDBias
10
70
mA
Measured TX output power
DDTx-Power
-8.2
+0.5
dBm
Measured RX received average
optical power
DDRx-Power
-14.2
+0.5
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
100
mA
Measured TX output power
DDTx-Power
-10
+2
dBm
Measured RX received average
optical power
DDRx-Power
-22
+2
dBm
Notes:
1. Accuracy of measured Tx bias current is 10% of the actual bias current from the laser driver to the laser.
FTLX1370W4BTL Preliminary Product Specification
Finisar Corporation – 25-Aug-2015 Rev. A1 Page 8
X. Mechanical Specifications
Finisar FTLX1370W4BTL SFP+ transceivers are compatible with the SFF-8432
specification for improved pluggable form factor, and shown here for reference purposes
only. Bail color is blue.
Figure 2. FTLX1370RDBTL Mechanical Dimensions.
FTLX1370W4BTL Preliminary Product Specification
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XI. PCB Layout and Bezel Recommendations
FTLX1370W4BTL Preliminary Product Specification
Finisar Corporation – 25-Aug-2015 Rev. A1 Page 10
FTLX1370W4BTL Preliminary Product Specification
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XII. Host - Transceiver Interface Block Diagram
Figure 6-Host-Module Interface
FTLX1370W4BTL Preliminary Product Specification
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XIII. References
1. “Specifications for Enhanced 8.5 and 10 Gigabit Small Form Factor Pluggable
Module ‘SFP+ ‘”, SFF Document Number SFF-8431, Revision 3.0, May 8, 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. 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.”
5. Small Form Factor Pluggable (SFP) Transceiver Multi-source Agreement (MSA),
September 14, 2000.
6. “CPRI Specification V6.1”. Common Public Radio Interface. July 1, 2014.
7. “Reference Point 3 Specification”. Open Base Station Architecture Initiative.
March 2010.
XIV. 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.
