AFBR-2CARxxZ
10G Ethernet SFP+ Active Optical Cable (AOC)
Data Sheet
Description
The Avago Technologies’ AFBR-2CARxxZ Active Opti-
cal Cable (AOC) is part of a family of SFP+ products to
serve 10Gb Ethernet (10GbE) applications. The letters
“xx” of the part number AFBR-2CARxxZ denoted the
cable length in meters. The AFBR-2CARxxZ AOC enables
10GbE equipment designs with very high port density
based on the new electrical and mechanical specifica-
tion enhancements to the well known SFP specifications
developed by the SFF Committee. The specifications are
referred to as “SFP+” to represent the enhancements
over previous SFP specifications. The SFP+ AOC have a
cable length up to 20m. These AOCs can be used as an
alternative solution to SFP+ passive and active copper
cables, while providing improved signal integrity, longer
distances, superior electromagnetic immunity and bet-
ter bit error rate performance.
Features
•
Proven High Reliability 850 nm technology: Avago
VCSEL transmitter and Avago PIN receiver
•
Maximum power dissipation 350mW per Active Cable
end
•
Avago SFP+ package design enables equipment EMI
performance in high port density applications with
margin to Class B limits
Specifications
•
Electrical specifications per SFF-8431 Specifications
for Enhanced Small Form Factor Pluggable Module
SFP+
•
0 to 70 °C case temperature operating range
•
Rx_LOS and Tx_DISABLE supported
•
Mechanical specifications per SFF Committee SFF
8432 Improved Pluggable Formfactor “IPF”
•
Compliant to Restriction on Hazardous Substances
(RoHS) per EU and China requirements
•
Class 1 eye safe per requirement of EN 60825-1 2007,
EN 60825-2 A2 2010
•
1E-15 BER performance
Related Products
•
The AFBR-703SDZ (AFBR-703ASDZ) is an SFP+ 10
Gigabit Ethernet 10GBASE-SR transceiver with case
temperature operated at 0-70 (0-85) °C for use on
multimode fiber cables. It is best suited for OM3 high
bandwidth MMF link applications with link lengths up
to 300 meters.
•
AFBR-707SDZ SFP+ 10 Gigabit Ethernet 10GBASE-
LRM transceiver for 220 meter operation in all MMF
link applications including OM1 and OM2 legacy fiber
cables and new high bandwidth OM3 fiber cables.
•
The AFBR-704SDZ is an SFP+ transceiver for 10GbE
10GBASE-USR applications with case temperature
0-70 °C for use on multimode fiber cables up to 100m.
•
AFCT-5016Z SFP+ Evaluation Board The purpose of
this SFP+ evaluation board is to provide the designer
with a convenient means for evaluating SFP+ fiber
optic transceivers.
Applications
•
1/10 Gigabit Ethernet (1/10GbE)
•
1/2/4/8G Fibre Channel (1/2/4/8GFC), Fibre Channel
over Ethernet (FCoE)
•
InfiniBand (QDR/DDR/SDR)
•
Data Center Networking
- Converged Enhanced Ethernet Data Centers
- Data Center Bridging
•
Networked storage systems
•
High Performance Computing
•
Proprietary Interconnects
Patent -
www.avagotech.com/patents
Part Number
AFBR-2CAR01Z
AFBR-2CAR02Z
AFBR-2CAR03Z
AFBR-2CAR05Z
AFBR-2CAR07Z
AFBR-2CAR10Z
AFBR-2CAR15Z
AFBR-2CAR20Z
AFCT-5016Z
Description
1 meter SFP+ Active Optical Cable
2 meter SFP+ Active Optical Cable
3 meter SFP+ Active Optical Cable
5 meter SFP+ Active Optical Cable
7 meter SFP+ Active Optical Cable
10 meter SFP+ Active Optical Cable
15 meter SFP+ Active Optical Cable
20 meter SFP+ Active Optical Cable
SFP+ Evaluation Board
Installation
The AFBR-2CARxxZ Active Optical Cable package is com-
pliant with the SFF-8432 Improved Pluggable Formfac-
tor housing specification for the SFP+. It can be installed
in any INF-8074 or SFF-8431/2 compliant Small Form
Pluggable (SFP) port regardless of host equipment op-
erating status The AFBR-2CARxxZ is hot-pluggable, al-
lowing both active cable ends to be installed while the
host system is operating and on-line. Upon insertion, the
housing makes initial contact with the host board SFP
cage, mitigating potential damage due to Electro-Static
Discharge (ESD).
Transmit Disable (TX_DISABLE)
Each end of the AFBR-2CARxxZ AOC has a TX_DISABLE
hardware pin, which accepts an input LVTTL compatible
control signal that shuts down the transmitter optical
output. A logic high signal implements the transmitter
disable function, while a low signal allows normal trans-
mitter operation. An internal pull up resistor disables
the transmitter until the host pulls the input low.
Receiver Section
The receiver section includes a PIN photodiode and cus-
tom amplification and quantization IC. DC blocking ca-
pacitors are located inside the AOC package and are not
required on the system board.
Digital Interface and Serial Identification
The two-wire interface protocol and signaling detail are
based on SFF-8431. Conventional EEPROM memory,
bytes 0-255 at memory address 0xA0, is organized in
compliance with SFF-8431. The EEPROM contents of
AFBR-2CARxxZ are such that it can directly replace the
Active Copper Cable.
Receiver Loss of Signal (Rx_LOS)
The Rx portion of the IC includes detection circuitry
which monitors the average input Rx optical power and
provides a LVTTL/CMOS compatible status signal to the
host via the Rx_LOS pin. A logic high status on this Rx_
LOS output pin indicates a loss of signal, indicating a link
failure such as a broken fiber, or the far-end cable-end is
not plugged in, or the far-end Tx has failed or has been
disabled.
Transmitter Section
The transmitter section includes an 850 nm VCSEL (Verti-
cal Cavity Surface Emitting Laser) light source designed
and manufactured by Avago Technologies. The VCSEL is
driven by an IC which uses the incoming differential high
speed logic signal to modulate the laser diode driver
current. This Tx laser driver circuit regulates the optical
power at a constant level provided the incoming data
pattern is DC balanced. DC blocking capacitors are lo-
cated inside the AOC package and are not required on
the system board.
Functional Data I/O
The AFBR-2CARxxZ interfaces with the host circuit board
through the twenty contact SFP+ electrical connector.
See Table 2 for contact descriptions. The device edge
connector is shown in Figure 2.
The AFBR-2CARxxZ high speed transmit and receive in-
terfaces require SFF-8431 compliant signal lines on the
host board. The TX_DISABLE and RX_LOS signals require
LVTTL signals on the host board (per SFF-8431) if used.
If an application does not take advantage of these func-
tions, care must be taken to ground TX_DISABLE to en-
able normal operation.
2
Application Support
An Evaluation Kit and Reference Designs are available to
assist in evaluation of the AFBR-2CARxxZ. Please contact
your local Field Sales representative for availability and
ordering details.
Electrostatic Discharge (ESD)
The AFBR-2CARxxZ is compatible with ESD levels found
in typical manufacturing and operating environments as
described in Table 1. In the normal handling and opera-
tion of optical cables, ESD is of concern in two circum-
stances.
The first case is during handling of the AOC prior to inser-
tion into an SFP+ compliant cage. To protect the device,
it’s important to use normal ESD handling pre-cautions.
These include use of grounded wrist straps, work-bench-
es and floor wherever a optical cable is handled.
The second case to consider is static discharges to the
exterior of the host equipment chassis after installation.
If the optical interface is exposed to the exterior of host
equipment cabinet, the optical cable may be subject to
system level ESD requirements.
Caution
There are no user serviceable parts nor maintenance
requirements for the AFBR-2CARxxZ. All mechanical
adjustments are made at the factory prior to shipment.
Tampering with, modifying, misusing or improperly han-
dling the AFBR-2CARxxZ will void the product warranty.
It may also result in improper operation and possibly
overstress the device. Performance degradation or de-
vice failure may result. Operating above maximum op-
erating conditions or in a manner inconsistent with it’s
design and function may result in exposure to hazardous
light radiation and may constitute an act of modifying or
manufacturing a laser product. Persons performing such
an act are required by law to recertify and re-identify the
laser product under the provisions of U.S. 21 CFR (Sub-
chapter J) and TUV.
Electromagnetic Interference (EMI)
Equipment incorporating 10 gigabit transceivers or ac-
tive optical cables is typically subject to regulation by the
FCC in the United States, CENELEC EN55022 (CISPR 22) in
Europe and VCCI in Japan. The AFBR-2CARxxZ enables
equipment compliance to these standards detailed in
Table 1. The metal housing and shielded design of the
AFBR-2CARxxZ minimizes the EMI challenge facing the
equipment designer. For superior EMI performance it
is recommended that equipment designs utilize SFP+
cages per SFF 8432.
Customer Manufacturing Processes
This AOC is pluggable and is not designed for aqueous
wash, IR reflow, or wave soldering processes.
Ordering Information
Please contact your local field sales engineer or one of
Avago Technologies franchised distributors for ordering
information. For technical information, please visit Ava-
go Technologies’ WEB page at www.avagotech.com. For
information related to SFF Committee documentation
visit www.sffcommittee.org.
RF Immunity (Susceptibility)
The EMI immunity of the AFBR-2CARxxZ exceeds typical
industry standards.
Eye Safety
The AFBR-2CARxxZ provides Class 1 (single fault toler-
ant) eye safety by design and has been tested for com-
pliance with the requirements listed in Table 1. The eye
safety circuit continuously monitors the optical output
power level and will disable the transmitter upon de-
tecting a condition beyond the scope of Class 1 certifi-
cation. Such conditions can be due to inputs from the
host board (Vcc fluctuation, unbalanced code) or a fault
within the transceiver. US CDRH and EU TUV certificates
are listed in table 1.
Regulatory Compliance
The AFBR-2CARxxZ complies with all applicable laws
and regulations as detailed in Table 1. Certification level
is dependent on the overall configuration of the host
equipment. The AOC performance is offered as a figure
of merit to assist the designer.
Flammability
The AFBR-2CARxxZ optical cable is made of metal and
high strength, heat resistant, chemical resistant and UL
94V-0 flame retardant plastic.
3
Table 1. Regulatory Compliance
Feature
Electrostatic Discharge (ESD)
to the Electrical Contacts
Life Traffic ESD Immunity
Life Traffic ESD Immunity
Electromagnetic
Interference (EMI)
Test Method
MIL-STD-883C
Method 3015.4
IEC 61000-4-2
IEC 61000-4-2
FCC Class B
CENELEC EN55022 Class B
(CISPR 22A)
VCCI Class A
IEC 61000-4-3
EN 60825-1 2007, EN 60825-2 A2:2010
Performance
Class 1 (> 2000 Volts)
10 contacts of 8 kV on the electrical faceplate
with device inserted into a panel.
Air discharge of 15 kV (min.) contact to con-
nector without damage.
System margins are dependent on customer
board and chassis design.
RF Immunity
Laser Eye Safety and
Equipment Type Testing
BAUART
¨
GEPRUFT
¨
TUV
Rheinland
Product Safety
Typically shows no measurable effect from a
10 V/m field swept from 80MHz to 1 GHz
P
out
: IEC AEL & US FDA CDRH Class 1
TYPE
APPROVED
Component Recognition
Underwriters Laboratories and Canadian Stan-
dards Association Joint Component Recogni-
tion for Information Technology Equipment
including Electrical Business Equipment
RoHS Directive 2002/95/EC and it’s amend-
ment directives 6/6
SGS Test Report No. LPC/13392 (AD-1)/07
CTS Ref. CTS/07/3283/Avago
Module: UL 94V-0
Cable: OFNR
RoHS Compliance
Flammability
4.7 µH
V
CC
T
0.1 µF
22 µF
0.1 µF
3.3 V
4.7 µH
0.1 µF
22 µF
0.1 µF
V
CC
R
SFP+ AOC end
HOST BOARD
NOTE: INDUCTORS MUST HAVE LESS THAN 1Ω SERIES RESISTANCE TO LIMIT VOLTAGE DROP TO THE SFP MODULE.
Figure 1. Recommended power supply filter
4
Table 2. Contact Description
Contact
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Symbol
VeeT
TX_FAULT
TX_DISABLE
SDA
SCL
MOD_ABS
RS0
RX_LOS
RS1
VeeR
VeeR
RD-
RD+
VeeR
VccR
VccT
VeeT
TD+
TD-
VeeT
Function/Description
Transmitter Signal Ground
Transmitter Fault (LVTTL-O) – Not used. Grounded inside the module
Transmitter Disable (LVTTL-I) – High or open disables the transmitter
Two Wire Serial Interface Data Line (LVCMOS – I/O)
(same as MOD-DEF2 in INF-8074)
Two Wire Serial Interface Clock Line (LVCMOS – I/O)
(same as MOD-DEF1 in INF-8074)
Module Absent (Output), connected to VeeT or VeeR in the module
Rate Select 0 - Not used, Presents high input impedance.
Receiver Loss of Signal (LVTTL-O)
Rate Select 1 - Not used, Presents high input impedance.
Receiver Signal Ground
Receiver Signal Ground
Receiver Data Out Inverted (CML-O)
Receiver Data Out (CML-O)
Receiver Signal Ground
Receiver Power + 3.3 V
Transmitter Power + 3.3 V
Transmitter Signal Ground
Transmitter Data In (CML-I)
Transmitter Data In Inverted (CML-I)
Transmitter Signal Ground
Notes
Note 1
Note 2
Note 3
Note 4
Note 4
Note 5
Note 2
Note 1
Note 1
Note 1
Note 1
Notes:
1. The module signal grounds are isolated from the module case.
2. This is an open collector/drain output that on the host board requires a 4.7 kΩ to 10 kΩ pullup resistor to VccHost. See Figure 2.
3. This input is internally biased high with a 4.7 kΩ to 10 kΩ pullup resistor to VccT.
4. Two-Wire Serial interface clock and data lines require an external pullup resistor dependent on the capacitance load.
5. This is a ground return that on the host board requires a 4.7 kΩ to 10 kΩ pullup resistor to VccHost.
10
11
TOWARD
HOST
BOTTOM OF
BOARD AS
VIEWED FROM
TOP THROUGH
BOARD
TOP VIEW
OF BOARD
1
20
Figure 2. Module edge connector contacts
5
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