AFBR-53B3EZ
5 V 1 x 9 Fiber Optic Transceivers
for Gigabit Ethernet (GbE) and Fibre Channel (FC)
Data Sheet
Description
The AFBR-53B3EZ transceivers from Avago Technologies
allow the system designer to implement a range of
solutions for multimode GbE and FC applications.
The overall Avago Technologies transceiver product
consists of three sections: the transmitter and receiver
optical subassemblies, an electrical subassembly, and
the package housing which incorporates a duplex SC
connector receptacle.
Features
Compliant with ANSI X3.297-1996 Fibre Channel
Physical Interface FC-PH-2 revision 7.4 proposed
specification for 100-M5-SN-I and 100-M6-SN-I signal
interfaces
Compliant with IEEE-802.3z Gigabit Ethernet specifi-
cations
Fully RoHS Compliant
300 m links in 62.5/125 mm MMF cables
500 m links in 50/125 mm MMF cables
Wave solder and aqueous wash process compatible
Industry standard mezzanine height 1 x 9 package style
with integral duplex SC connector
IEC 60825-1 Class 1/CDRH Class I laser eye safe
Single +5 V power supply operation with PECL compat-
ible logic interfaces and PECL Signal Detect
AC/DC Couple
Transmitter Section
The transmitter section of the AFBR-53B3EZ consists of an
850 nm Vertical Cavity Surface Emitting Laser (VCSEL) in
an Optical Subassembly (OSA), which mates to the fiber
cable. The OSA is driven by a custom, silicon bipolar IC
which converts differential PECL compatible logic signals
into an analog laser diode drive current. The high speed
output lines are internally ac-coupled and differentially
terminated with a 100
resistor.
Receiver Section
The receiver of the AFBR-53B3EZ includes a GaAs PIN
photodiode mounted together with a custom, silicon
bipolar transimpedance preamplifier IC in an OSA. This
OSA is mated to a custom silicon bipolar circuit that
provides postamplification and quantization.
The post-amplifier also includes a Signal Detect circuit
which provides a PECL logic-high output upon detection
of a usable input optical signal level. This single-ended
PECL output is designed to drive a standard PECL input
through a 50 ohm PECL load. The high speed output lines
are dccoupled, different from the transmitter.
Applications
Switch to switch interface
Switched backbone applications
Mass storage systems I/O
Computer systems I/O
High-speed peripheral interface
High-speed switching systems
Computer systems I/O
Related Products
Versions of this transceiver module also available for
+3.3 V operation (HFBR-53A5V/53A3V)
MT-RJ SFF fiber optic transceivers for GbE and FC
(HFBR-5912E/5912E)
Gigabit Interface Converters (GBIC) for GbE and FC
(AFBR-5601Z)
Package and Handling Instructions
Flammability
The AFBR-53B3EZ transceiver housing is made of high
strength, heat resistant, chemically resistant, and UL 94V-0
flame retardant plastic.
Electrostatic Discharge (ESD)
There are two design cases in which immunity to ESD
damage is important. The first case is during handling of
the transceiver prior to mounting it on the circuit board.
It is important to use normal ESD handling precautions
for ESD sensitive devices. These precautions include using
grounded wrist straps, work benches, and floor mats in
ESD controlled areas. The transceiver performance has
been shown to provide adequate performance in typical
industry production environments.
The second case to consider is static discharges to the
exterior of the equipment chassis containing the trans-
ceiver parts. To the extent that the duplex SC connector
receptacle is exposed to the outside of the equipment
chassis it may be subject to whatever system-level ESD
test criteria that the equipment is intended to meet.
The transceiver performance is more robust than typical
industry equipment requirements of today.
Recommended Solder and Wash Process
The AFBR-53B3EZ is compatible with industry-standard
wave or hand solder processes.
Process plug
This transceiver is supplied with a process plug (HFBR-
5000) for protection of the optical ports within the duplex
SC connector receptacle. This process plug prevents con-
tamination during wave solder and aqueous rinse as well
as during handling, shipping and storage. It is made of
a high-temperature, molded sealing material that can
withstand +85° C and a rinse pressure of 110 lbs per
square inch.
Electromagnetic Interference (EMI)
Most equipment designs utilizing these highspeed 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. Refer to
EMI section (page 4) for more details.
Recommended Solder fluxes
Solder fluxes used with the AFBR-53B3EZ 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.
Immunity
Equipment utilizing these transceivers will be subject to
radio-frequency electromagnetic fields in some environ-
ments. These transceivers have good immunity to such
fields due to their shielded design.
Recommended Cleaning/Degreasing Chemicals
Alcohols:
methyl, isopropyl, isobutyl.
Aliphatics:
hexane, heptane.
Other:
soap solution, naphtha.
Do not use
partially halogenated hydrocarbons such as
1,1.1 trichloroethane, 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.
Eye Safety
These laser-based transceivers are classified as AEL Class I
(U.S. 21 CFR(J) and AEL Class 1 per EN 60825-1 (+A11). They
are eye safe when used within the data sheet limits per
CDRH. They are also eye safe under normal operating con-
ditions and under all reasonably foreseeable single fault
conditions per EN60825-1. Avago Technologies has tested
the transceiver design for compliance with the require-
ments listed below under normal operating conditions
and under single fault conditions where applicable. TUV
Rheinland has granted certification to these transceivers
for laser eye safety and use in EN 60950 and EN 60825-2
applications. Their performance enables the transceivers
to be used without concern for eye safety up to maximum
volts transmitter V
CC
.
Regulatory Compliance
(See the Regulatory Compliance Table for transceiver
performance) The overall equipment design will
determine the certification level. The transceiver perfor-
mance is offered as a figure of merit to assist the designer
in considering their use in equipment designs.
2
CAUTION:
There are no user serviceable parts nor any maintenance
required for the AFBR-53B3EZ. All adjustments are made at
the factory before shipment to our customers. Tampering
with or modifying the performance of the AFBR-53B3EZ
will result in voided product warranty. It may also result
in improper operation of the AFBR- 53B3EZ circuitry, and
possible overstress of the laser source. Device degrada-
tion or product failure may result.
Connection of the AFBR-53B3EZ to a nonapproved optical
source, operating above the recommended absolute
maximum conditions or operating the AFBR-53B3EZ in
a manner inconsistent with its design and function may
result in hazardous radiation exposure and may be con-
sidered an act of modifying or manufacturing a laser
product. The person(s) performing such an act is required
by law to recertify and reidentify the laser product under
the provisions of U.S. 21 CFR (Subchapter J).
Regulatory Compliance
Feature
Electrostatic Discharge (ESD)
to the Electrical Pins
Electrostatic Discharge (ESD)
to the Duplex SC Receptacle
Electromagnetic Interference
(EMI)
Test Method
MIL-STD-883C
Method 3015.4
Variation of IEC 801-2
Performance
Class 1 (>2000 V).
Typically withstand at least 15 kV without damage when
the duplex SC connector receptacle is contacted by a
Human Body Model probe.
Margins are dependent on customer board and chassis
designs.
FCC Class B
CENELEC EN55022 Class B
(CISPR 22A)
VCCI Class I
Variation of IEC 801-3
Immunity
Typically show no measurable effect from a 10 V/m field
swept from 27 to 1000 MHz applied to the transceiver with-
out a chassis enclosure.
AEL Class I, FDA/CDRH
CDRH certification #9720151-56
TUV file #09871425.14
AEL Class 1, TUV Rheinland of North America
Laser Eye Safety and
Equipment Type Testing
BAUART
¬
GEPRUFT
¬
TUV
Rheinland
Product Safety
US 21 CFR, Subchapter J per
Paragraphs 1002.10 and 1002.12
TYPE
APPROVED
EN 60825-1: 1994 + A1: 19961
EN 60825-2: 1994 + A1
EN 60950: 1992 + A1 + A2 + A3
+ A4 + A11
Protection Class III
Component Recognition
Underwriters Laboratories and
UL File E173874
Canadian Standards Association Joint
Component Recognition for Informa-
tion Technology Equipment Includ-
ing Electrical Business
Equipment.
3
APPLICATION SUPPORT
Optical Power Budget and Link Penalties
The worst-case Optical Power Budget (OPB) in dB for a
fiber-optic link is determined by the difference between
the minimum transmitter output optical power (dBm avg)
and the lowest receiver sensitivity (dBm avg). This OPB
provides the necessary optical signal range to establish a
working fiber-optic link. The OPB is allocated for the fiber-
optic cable length and the corresponding link penalties.
For proper link performance, all penalties that affect the
link performance must be accounted for within the link
optical power budget.
Eye Safety Circuit
For an optical transmitter device to be eyesafe in the
event of a single fault failure, the transmitter must either
maintain normal, eyesafe operation or be disabled.
In the AFBR-53B3EZ there are three key elements to the
laser driver safety circuitry: a monitor diode, a window
detector circuit, and direct control of the laser bias. The
window detection circuit monitors the average optical
power using the monitor diode. If a fault occurs such that
the transmitter dc regulation circuit cannot maintain the
preset bias conditions for the laser emitter within ± 20%,
the transmitter will automatically be disabled. Once this
has occurred, only an electrical power reset will allow an
attempted turn-on of the transmitter.
Data Line Interconnections
Avago Technologies’ AFBR-53B3EZ fiber-optic transceiver
is designed for PECL compatible signals on the Tx data
lines. The transmitter inputs are internally AC-coupled
to the laser driver circuit from the transmitter input pins
(pins 7, 8). The transmitter driver circuit for the laser light
source is an ac-coupled circuit. This circuit regulates the
output optical power. The regulated light output will
maintain a constant output optical power provided the
data pattern is reasonably balanced in duty factor. If the
data duty factor has long, continuous state times (low or
high data duty factor), then the output optical power will
gradually change its average output optical power level
to its preset value.
The receiver section is internally AC-coupled between the
pre-amplifier and the post-amplifier stages. The actual
Data and Data-bar outputs of the post-amplifier are DC-
coupled to their respective output pins (pins 2, 3). Signal
Detect is a single-ended, PECL output signal that is DC-
coupled to pin 4 of the module. Signal Detect should
not be AC-coupled externally to the follow-on circuits
because of its infrequent state changes.
Caution should be taken to account for the proper inter-
connection between the supporting Physical Layer inte-
grated circuits and this AFBR-53B3EZ transceiver. Figure 3
illustrates a recommended interface circuit for intercon-
necting to a PECL compatible fiber-optic transceiver.
Signal Detect
The Signal Detect circuit provides a PECL low output signal
when the optical link is broken or when the transmitter is
off. The Signal Detect threshold is set to transition from
a high to low state between the minimum receiver input
optional power and -30 dBm avg. input optical power indi-
cating a definite optical fault (e.g. unplugged connector for
the receiver or transmitter, broken fiber, or failed far-end
transmitter or data source). A Signal Detect indicating a
working link is functional when receiving encoded 8B/10B
characters. The Signal Detect does not detect receiver data
error or error-rate. Data errors are determined by signal
processing following the transceiver.
Electromagnetic Interference (EMI)
One of a circuit board designer’s foremost concerns is
the control of electromagnetic emissions from electronic
equipment. Success in controlling generated Electro-
magnetic Interference (EMI) enables the designer to pass
a governmental agency’s EMI regulatory standard; and
more importantly, it reduces the possibility of interfer-
ence to neighboring equipment. The EMI performance
of an enclosure using these transceivers is dependent on
the chassis design. Avago Technologies encourages using
standard RF suppression practices and avoiding poorly
EMI-sealed enclosures.
4
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause catastrophic damage to the device. Limits apply to each
parameter in isolation, all other parameters having values within the recommended operating conditions. It should not
be assumed that limiting values of more than one parameter can be applied to the product at the same time. Exposure
to the absolute maximum ratings for extended periods can adversely affect device reliability.
Parameter
Storage Temperature
Supply Voltage
Data Input Voltage
Transmitter Differential Input Village
Output Current
Relative Humidity
Symbol
T
S
V
CC
V
I
V
D
I
D
RH
Min.
-40
-0.5
-0.5
Typ.
Max.
+100
7.0
V
CC
1.6
50
Unit
°C
V
V
V
mA
%
Reference
1
2
5
95
Recommended Operating Conditions
Parameter
Ambient Operating Temperature
Case Temperature
Supply Voltage
Power Supply Rejection
Transmitter Differential Input Voltage
Data Output Load
Signal Detect Output Load
Symbol
T
A
T
C
V
CC
PSR
V
D
R
DL
R
SDL
Min.
O
4.75
Typ.
Max.
+70
+90
5.25
Unit
°C
°C
V
mV
P-P
Reference
3
4
5
5
50
0.3
50
50
1.6
V
Process Compatibility
Parameter
Hand Lead Soldering Temperature /Time
Wave Soldering and Aqueous Wash
Symbol
T
SOLD
/t
SOLD
T
SOLD
/t
SOLD
Min.
Typ.
Max.
+260/10
+260/10
Unit
°C/sec.
°C/sec.
Reference
6
Notes:
1. The transceiver is class 1 eye-safe up to V
CC
= 7 V.
2. This is the maximum voltage that can be applied across the Differential Transmitter Data Inputs without damaging the input circuit.
3. Case temperature measurement referenced to the center-top of the internal metal transmitter shield.
4. Tested with a 50 mV
P–P
sinusoidal signal in the frequency range from 500 Hz to 1500 kHz on the V
CC
supply with the recommended power supply
filter in place. Typically less than a 0.25 dB change in sensitivity is experienced.
5. The outputs are terminated to V
CC
–2 V.
6. Aqueous wash pressure < 110 psi.
5
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