AFBR-5922ALZ
Small Form Factor, Pin Through Hole (PTH), Low Voltage (3.3 V)
2x5 RoHS-Compliant Optical Transceiver for Fibre Channel
2.125/1.0625 GBd 850 nm
Data Sheet
Description
The AFBR-5922ALZ from Avago Technologies is a high
performance, cost-effective optical transceiver for serial
optical data communications applications operating at
2.125 Gb/s and 1.0625 Gb/s. This module is designed for
multimode fiber and operates at a nominal wavelength
of 850 nm. The transceiver incorporates 3.3 V DC com-
patible technology including an 850 nm VCSEL trans-
mitter. The AFBR-5922ALZ offers maximum flexibility
to Fibre Channel designers, manufacturers, and system
integrators to implement a range of solutions for multi-
mode Fibre Channel applications. This product is fully
compliant with all equipment meeting the Fibre Channel
FC-PI 200-M5-SN-I and 200-M6-SN-I 2.125 GBd specifi-
cations, and is compliant with the Fibre Channel FC-PI
100-M5-SN-I, FC-PI 100-M6-SN-I, FC-PH2 100-M5-SN-
and FC-PH2 100-M6-SN-I 1.0625 GBd specifications. The
AFBR-5922ALZ is also compliant with the SFF Multi Source
Agreement (MSA).
Features
•
Fully RoHS Compliant
•
Datarate specification: 2.125 GBd operation for FC-PI
200-M5-SN-I and FC-PI 200-M6-SN-I
1.0625 GBd operation for FC-PI 100-M5-SN-I and FC-PI
100-M6-SN-I
•
Link lengths at 2.125 GBd:
0.5 to 300 m – 50/125
µm
MMF
0.5 to 150 m – 62.5/125
µm
MMF
•
Link lengths at 1.0625 GBd:
0.5 to 500 m – 50/125
µm
MMF
0.5 to 300 m – 62.5/125
µm
MMF
•
850 nm Vertical Cavity Surface Emitting Laser (VCSEL)
•
Laser AEL Class I (eye safe) per:
US 21 CFR (J)
EN 60825-1 (+All)
•
Industral temperature and supply voltage operation
(-40°C to 85°C, 3.3V
±
1%)
•
Industry standard 2x5 SFF package
•
Wave solder and aqueous wash process compatible
Applications
•
Mass storage system I/O
•
Computer system I/O
•
High speed peripheral interface
•
High speed switching systems
•
Host adapter I/O
•
RAID cabinets
Related Products
•
AFBR-59M5LZ: 850 nm RoHS compliant 2x6 for
2.125/1.0625 Gbd for Fibre Channel and 1.25 Gigabit
Ethernet
Patent -
www.avagotech.com/patents
AFBR-5922ALZ BLOCK DIAGRAM
RECEIVER
LIGHT FROM FIBER
PHOTO-DETECTOR
AMPLIFICATION
& QUANTIZATION
ELECTRICAL INTERFACE
RD+ (RECEIVE DATA)
RD– (RECEIVE DATA)
SIGNAL DETECT
OPTICAL INTERFACE
TRANSMITTER
LIGHT TO FIBER
VCSEL
LASER
DRIVER &
SAFETY
CIRCUITRY
Tx_DISABLE
TD+ (TRANSMIT DATA)
TD– (TRANSMIT DATA)
Figure 1. Transceiver functional diagram.
See Table 5 for Process Compatibility Specifications.
Module Package
Avago Technologies offers the Pin Through Hole package
utilizing an integral LC-Duplex optical interface connector.
The transceiver uses a reliable 850 nm VCSEL source and
requires a 3.3 V DC power supply for optimal system
design.
6
7
8
9
10
5
4
3
2
1
PIN DESCRIPTION
PIN
1
2
3
4
5
6
7
8
9
10
NAME
Rx GROUND
Rx POWER
Rx SD
Rx DATA BAR
Rx DATA
Tx POWER
Tx GROUND
Tx DISABLE
Tx DATA
Tx DATA BAR
TYPE
GROUND
POWER
STATUS OUT
SIGNAL OUT
SIGNAL OUT
POWER
GROUND
CONTROL IN
SIGNAL IN
SIGNAL IN
Module Diagrams
Figure 1 illustrates the major functional components of the
AFBR-5922ALZ. The connection diagram for both modules
are shown in Figure 2. Figure 6 depicts the external
configuration and dimensions of the module.
Installation
The AFBR-5922ALZ can be installed in any MSA-
compliant Pin Through Hole port. The module Pin
Description is shown in Figure 2.
TOP VIEW
Solder and Wash Process Capability
These transceivers are delivered with protective process
plugs inserted into the LC connector receptacle. This
process plug protects the optical subassemblies during
wave solder and aqueous wash processing and acts as
a dust cover during shipping. These transceivers are
compatible with industry standard wave or hand solder
processes.
Figure 2. Module pin assignments and pin configuration.
Recommended Solder Fluxes
Solder fluxes used with the AFBR-5922ALZ should be
water-soluble, organic fluxes. Recommended solder fluxes
include Lonco 3355-11 from London Chemical West, Inc.
of Burbank, CA, and 100 Flux from Alpha-Metals of Jersey
City, NJ.
2
Recommended Cleaning/Degreasing Chemicals
Alcohols:
methyl, isopropyl, isobutyl.
Aliphatics:
hexane, heptane.
Other
: naphtha.
Do not use partially halogenated hydrocarbons such as
1,1.1 trichoroethane or ketones such as MEK, acetone,
chloroform, ethyl acetate, methylene dichloride, phenol,
methylene chloride, or N-methylpyrolldone. Also, Avago
Technologies does not recommend the use of cleaners
that use halogenated hydrocarbons because of their
potential environmental harm.
Functional Data I/O
Avago Technologies’ AFBR-5922ALZ fiber-optic transceiver
is designed to accept industry standard differential signals.
In order to reduce the number of passive components
required on the customer’s board, Avago Technologies has
included the functionality of the transmitter bias resistors
and coupling capacitors within the fiber optic module.
The transceiver is compatible with an “AC-coupled” con-
figuration and is internally terminated. Figure 1 depicts
the functional diagram of the AFBR-5922ALZ.
Caution should be taken to account for the proper inter-
connection between the supporting Physical Layer inte-
grated circuits and the AFBR-5922ALZ. Figure 3 illustrates
the recommended interface circuit.
Transmitter Section
The transmitter section includes an 850 nm VCSEL (Vertical
Cavity Surface Emitting Laser) light source and a transmit-
ter driver circuit. The driver circuit maintains a constant
optical power level provided that the data pattern is valid
8B/10B code. Connection to the transmitter is provided
via an LC optical connector.
Reference Designs
Figure 3 depicts a typical application configuration, while
Figure 4 depicts the multisourced power supply filter
circuit design.
TX Disable
The AFBR-5922ALZ accepts a transmit disable control
signal input which shuts down the transmitter. A high
signal implements this function while a low signal allows
normal laser operation. In the event of a fault (e.g., eye
safety circuit activated), cycling this control signal resets
the module. The TX Disable control should be actuated
upon initialization of the module. See Figure 5 for product
timing diagrams.
Regulatory Compliance
See Table 1 for transceiver Regulatory Compliance perfor-
mance. The overall equipment design will determine the
certification level. The transceiver performance is offered
as a figure of merit to assist the designer.
Electrostatic Discharge (ESD)
There are two conditions in which immunity to ESD
damage is important. Table 1 documents our immunity
to both of these conditions. The first condition is during
handling of the transceiver prior to attachment to the PCB.
To protect the transceiver, it is important to use normal
ESD handling precautions. These precautions include
using grounded wrist straps, work benches, and floor mats
in ESD controlled areas. The ESD sensitivity of the AFBR-
5922ALZ is compatible with typical industry production
environments. The second condition is static discharges
to the exterior of the host equipment chassis after instal-
lation. To the extent that the duplex LC optical interface
is exposed to the outside of the host equipment chassis,
it may be subject to system-level ESD requirements. The
ESD performance of the AFBR-5922ALZ exceeds typical
industry standards.
Eye Safety Circuit
For an optical transmitter device to be eye-safe in the
event of a single fault failure, the transmitter will either
maintain normal, eye-safe operation or be disabled. In the
event of an eye safety fault, the VCSEL will be disabled.
Receiver Section
Connection to the receiver is provided via an LC optical
connector. The receiver circuit includes a Signal Detect (SD)
circuit which provides an open collector logic low output
in the absence of a usable input optical signal level.
Signal Detect
The Signal Detect (SD) output indicates if the optical
input signal to the receiver does not meet the minimum
detectable level for Fibre Channel compliant signals.
When SD is low it indicates loss of signal. When SD is high
it indicates normal operation. The Signal Detect thresh-
olds are set to indicate a definite optical fault has occurred
(e.g., disconnected or broken fiber connection to receiver,
failed transmitter).
Immunity
Equipment hosting the AFBR-5922ALZ modules will be
subjected to radio-frequency electromagnetic fields in
some environments. The transceivers have good immunity
to such fields due to their shielded design.
3
Electromagnetic Interference (EMI)
Most equipment designs utilizing these high-speed trans-
ceivers from Avago Technologies will be required to meet
the requirements of FCC in the United States, CENELEC
EN55022 (CISPR 22) in Europe and VCCI in Japan. The
metal housing and shielded design of the AFBR-5922ALZ
minimize the EMI challenge facing the host equipment
designer. These transceivers provide superior EMI perfor-
mance. This greatly assists the designer in the manage-
ment of the overall system EMI performance.
Flammability
The AFBR-5922ALZ VCSEL transceiver housing is made
of metal and high strength, heat resistant, chemically
resistant, and UL 94V-0 flame retardant plastic.
Caution
There are no user serviceable parts nor is any mainte-
nance required for the AFBR-5922ALZ. All adjustments are
made at the factory before shipment to our customers.
Tampering with or modifying the performance of the
AFBR-5922ALZ will result in voided product warranty. It
may also result in improper operation of the AFBR-5922ALZ
circuitry, and possible overstress of the laser source. Device
degradation or product failure may result. Connection
of the AFBR-5922ALZ to a non-approved optical source,
operating above the recommended absolute maximum
conditions or operating the AFBR-5922ALZ in a manner
inconsistent with its design and function may result in
hazardous radiation exposure and may be considered an
act of modifying or manufacturing a laser product. The
person(s) performing such an act is required by law to
re-certify and re-identify the laser product under the
provisions of U.S. 21 CFR (Subchapter J) and the TUV.
Eye Safety
These 850 nm VCSEL-based transceivers provide Class 1
eye safety by design. Avago Technologies has tested the
transceiver design for compliance with the requirements
listed in Table 1: Regulatory Compliance, under normal
operating conditions and under a single fault condition.
Reliability
These transceivers have an estimated failure rate of <100
FITS @ 50°C.
Table 1. Regulatory Compliance
Feather
Electrostatic Discharge
(ESD) to the Electrical Pins
Electrostatic Discharge
(ESD) to the Duplex LC
Receptacle
Electromagnetic Interference
(EMI)
Immunity
Test Method
MIL-STD-889C Method 3015.4
Variation of IEC 61000-4-2
Performance
Class 2 (> 2000V)
Typically withstand at least 25kV without damage when
the duplex LC connector receptacle is contaced by a
Human Body Model probe.
System margins are dependent on customer board and
chassis design.
Typically shows a negligible effect from a 10 V/m field
swept from 80 to 1000 MHz applied to the transceiver
without a chassis enclosure.
CDRH file # 9720151-60
TUV file #R72102088
UL file #TBD
FCC Class B CENELEC
EN55022 Class B (CISPR 22A)
VCCI Class
Variation of IEC 61000-4-3
Eye Safety
US FDA CDRH AEL Class 1
EN(IEC)60825-1,2
EN60950 Class 1
Underwriters Laboratories and UL
Canadian Standards Association
Joint Component Recognition for
Information Technology Equipment
including Electrical Business
Equipment.
Component Recognition
RoHS Compliance
Less than 1000 ppm of cadminm, lead, mercury, hexavalent
chromium, polybrominated biphenyls and polybrominated
biphenyl
4
Ordering Information
Please contact your local field sales engineer or one of Avago Technologies franchised distributors for ordering
information. For technical information regarding this product, including the MSA, please visit Avago Technologies
Semiconductors Products Website at www.avagotech.com. Use the quick search feature to search for this part number.
You may also contact Avago Technologies Customer Response Center at 1-800-235-0312.
GND,T
Tx_DISABLE
Tx_FAULT
Tx DIS
Tx FAULT
GND
6.8 kΩ
TD+
TD-
4.7 to 10 kΩ
1µH
0.1
µF
PROTOCOL IC
SERDES IC
3.3 V
10
µF
0.1
µF
1µH
10
µF
0.1
µF
V
CC
,R
V
CC
,T
0.01
µF
100
Ω
0.01
µF
LASER DRIVER
V
CC
,R
50
Ω
0.01
µF
V
CC
,R
50
Ω
RD+
100
Ω
RD-
RX_SD
0.01
µF
POST AMPLIFIER
RX_SD
GND
GND
Figure 3. Typical application configuration.
VCCT
0.1 µF
1 µH
VCCR
0.1 µF
10 µF
1 µH
0.1 µF
10 µF
3.3 V
SFF MODULE
HOST BOARD
NOTE: INDUCTORS MUST HAVE LESS THAN 1
Ω
SERIES RESISTANCE PER MSA.
Figure 4. MSA recommended power supply filter.
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