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Электронный компонент: HFBR-53D3

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1 x 9 Fiber Optic Transceivers
for Fibre Channel
Technical Data
HFBR-53D3 Family,
850 nm VCSEL
HFCT-53D3 Family,
1300 nm FP Laser
Features
HFBR-53D3 is Compliant
with ANSI X3.297-1996
Fibre Channel Physical
Interface FC-PH-2 Revision
7.4 Proposed Specifications
for 100-M5-SN-I and
100-M6-SN-I signal interfaces
HFCT-53D3 is Compliant
with ANSI 100-SM-LC-L
Revision 2 enhancement to
ANSI X3.297-1996 FC-PH-2
Revision 7.4
Industry Standard
Mezzanine Height 1 x 9
Package Style with Integral
Duplex SC Connector
Performance:
HFBR-53D3:
300 m over 62.5/125 m
MMF
500 m over 50/125 m MMF
HFCT-53D3:
500 m with 50/125 m MMF
500 m with 62.5/125 m
MMF
10 km with 9/125 m SMF
IEC 60825-1 Class 1/CDRH
Class I Laser Eye Safe
Single +5 V Power Supply
Operation with PECL Logic
Interfaces
Wave Solderable and
Aqueous Wash Process
Compatible
Applications:
Mass Storage Systems I/O
Computer Systems I/O
High-speed Peripheral
Interface
High-speed Switching
Systems
Host Adapter I/O
RAID Cabinets
Related Products
Physical Layer ICs
Available for optical or
Copper Interface (HDMP-
1536A/46A)
Versions of this Transceiver
Module also available for
Gigabit Ethernet
(HFBR/HFCT-53D5 Family)
Gigabit Interface
Converters (GBIC) for
Fibre Channel (CX, SX, LX)
Description
The HFBR/HFCT-53D3
transceiver from Agilent allows
the system designer to implement
a range of solutions for
multimode and single mode Fibre
Channel applications.
The overall Agilent 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.
Transmitter Section
The transmitter section of the
HFBR-53D3 consists of an 850 nm
Vertical Cavity Surface Emitting
Laser (VCSEL) in an optical
subassembly (OSA), which mates
to the fiber cable. The HFCT-53D3
incorporates a 1300 nm Fabry-
Perot (FP) Laser designed to
meet the Fibre Channel
specification. The OSA is driven
by a custom, silicon bipolar IC
which converts differential PECL
logic signals (ECL referenced to a
+5 V supply) into an analog laser
diode drive current.
Receiver Section
The receiver of the HFBR-53D3
includes a silicon 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 post-
amplification and quantization.
The HFCT-53D3 utilizes an InP
PIN photodiode in the same
configuration.
2
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
W PECL load.
Package and Handling
Instructions
Flammability
The HFBR/HFCT-53D3
transceiver housing is made of
high strength, heat resistant,
chemically resistant, and UL 94V-0
flame retardant plastic.
Recommended Solder and
Wash Process
The HFBR/HFCT-53D3 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 contamination 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 +80C
and a rinse pressure of 110 lbs
per square inch.
Recommended Solder fluxes
Solder fluxes used with the
HFBR/HFCT-53D3 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.
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, Agilent
does not recommend the use of
cleaners that use halogenated
hydrocarbons because of their
potential environmental harm.
Regulatory Compliance
(See the Regulatory Compliance
Table for transceiver performance)
The overall equipment design will
determine the certification level.
The transceiver performance is
offered as a figure of merit to
assist the designer in considering
their use in equipment designs.
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 transceiver 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.
Electromagnetic Interference
(EMI)
Most equipment designs utilizing
these high-speed transceivers from
Agilent 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 5) for more details.
Immunity
Equipment utilizing these
transceivers will be subject to
radio-frequency electromagnetic
fields in some environments.
These transceivers have good
immunity to such fields due to
their shielded design.
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 conditions and under
all reasonably foreseeable single
fault conditions per EN60825-1.
Agilent has tested the transceiver
design for compliance with the
requirements 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 7 V
transmitter V
CC
.
3
CAUTION:
There are no user serviceable
parts nor any maintenance
required for the
HFBR/HFCT-53D3. All
adjustments are made at the
factory before shipment to our
customers. Tampering with or
modifying the performance of the
HFBR/HFCT-53D3 will result in
voided product warranty. It may
also result in improper operation
of the HFBR/HFCT-53D3 circuitry,
and possible overstress of the
laser source. Device degradation
or product failure may result.
Connection of the
HFBR/HFCT-53D3 to a non-
approved optical source, operating
above the recommended absolute
maximum conditions or operating
the HFBR/HFCT-53D3 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 recertify and
reidentify the laser product under
the provisions of U.S. 21 CFR
(Subchapter J).
Regulatory Compliance
Feature
Test Method
Performance
Electrostatic Discharge
(ESD) to the
Electrical Pins
MIL-STD-883C
Method 3015.4
Class 1 (>2000 V).
Electrostatic Discharge
(ESD) to the
Duplex SC Receptacle
Variation of IEC 801-2
Typically withstand at least 15 kV without damage
when the duplex SC connector receptacle is
contacted by a Human Body Model probe.
Electromagnetic
Interference (EMI)
FCC Class B
CENELEC EN55022 Class B
(CISPR 22A)
VCCI Class I
Margins are dependent on customer board and
chassis designs.
Immunity
Variation of IEC 801-3
Typically show no measurable effect from a 3 V/m
field swept from 27 to 1000 MHz applied to the
transceiver without a chassis enclosure.
Laser Eye Safety
and Equipment Type
Testing
US 21 CFR, Subchapter J
per Paragraphs 1002.10
and 1002.12
EN 60825-1: 1994 +A11
EN 60825-2: 1994
EN 60950: 1992+A1+A2+A3
AEL Class I, FDA/CDRH
HFBR-53D3 Accession #9720151-03
HFCT-53D3 Accession #9521220-16
AEL Class 1, TUV Rheinland of North America
HFBR-53D3:
Certificate #E9771047.09
Protection Class III
HFCT-53D3
Certificate #933/510803
Component
Recognition
Underwriters Laboratories and
Canadian Standards Association
Joint Component Recognition
for Information Technology
Equipment Including Electrical
Business Equipment.
UL File #E173874
4
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.
Data Line
Interconnections
Agilent's HFBR/HFCT-53D3 fiber-
optic transceiver is designed to
directly couple to +5 V PECL
signals. The transmitter inputs
are internally dc-coupled to the
laser driver circuit from the
transmitter input pins (pins 7, 8).
There is no internal, capacitively-
coupled 50 Ohm termination
resistance within the transmitter
input section. The transmitter
driver circuit for the laser light
source is a dc-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.
As for the receiver section, it is
internally ac-coupled between the
preamplifier 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,
+5 V 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 interconnection
between the supporting Physical
Layer integrated circuits and this
HFBR/HFCT-53D3 transceiver.
Figure 3 illustrates a
recommended interface circuit
for interconnecting to a +5 V dc
PECL fiber-optic transceiver.
Some fiber-optic transceiver
suppliers' modules include
internal capacitors, with or
without 50 Ohm termination, to
couple their Data and Data-bar
lines to the I/O pins of their
module. When designing to use
these type of transceivers along
with Agilent transceivers, it is
important that the interface
circuit can accommodate either
internal or external capacitive
coupling with 50 Ohm termination
components for proper operation
of both transceiver designs. The
internal dc-coupled design of the
HFBR/HFCT-53D3 I/O
connections was done to provide
the designer with the most
flexibility for interfacing to
various types of circuits.
Eye Safety Circuit
For an optical transmitter device
to be eye-safe in the event of a
single fault failure, the transmitter
must either maintain normal, eye-
safe operation or be disabled.
In the HFBR-53D3 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.
The HFCT-53D3 utilizes an
integral fiber stub along with a
current limiting circuit to
guarantee eye-safety. It is
intrinsically eye safe and does not
require shut down circuitry.
Signal Detect
The Signal Detect circuit provides
a deasserted output signal that
implies the link is open or 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
indicating 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/l0B characters. The
Signal Detect does not detect
receiver data error or error-rate.
Data errors are determined by
Signal processing following the
transceiver.
5
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
Electromagnetic Interference
(EMI) enables the designer to
pass a governmental agency's
EMI regulatory standard; and
more importantly, it reduces the
possibility of interference to
neighboring equipment. There are
three options available for the
HFBR-53D3 and two for the
HFCT-53D3 with regard to EMI
shielding which provide the
designer with a means to achieve
good EMI performance. The EMI
performance of an enclosure
using these transceivers is
dependent on the chassis design.
Agilent encourages using
standard RF suppression
practices and avoiding poorly
EMI-sealed enclosures.
The first configuration is a
standard HFBR-53D3 fiber optic
transceiver that has no external
EMI shield. This unit is for
applications where EMI is either
not an issue for the designer, the
unit resides completely inside a
shielded enclosure, or the module
is used in a low density,
extremely quiet application. The
HFCT-53D3 is not available for
use without an external shield.
The second configuration, option
EM, is for EMI shielding
applications where the position of
the transceiver module will
extend outside the equipment
enclosure. The metallized plastic
package and integral external
metal shield of the transceiver
helps locally to terminate EM
fields to the chassis to prevent
their emissions outside the
enclosure. This metal shield
contacts the panel or enclosure
on the inside of the aperture on
all but the bottom side of the
shield and provides a good RF
connection to the panel. This
option can accommodate various
panel or enclosure thickness, i.e.,
.04 in. min. to 0.10 in. max. The
reference plane for this panel
thickness variation is from the
front surface of the panel or
enclosure. The recommended
length for protruding the
HFBR/HFCT-53D3 EM
transceiver beyond the front
surface of the panel or enclosure
is 0.25 in. With this option, there
is flexibility of positioning the
module to fit the specific need of
the enclosure design. (See
Figure 6 for the mechanical
drawing dimensions of this
shield.)
The third configuration, option
FM, is for applications that are
designed to have a flush mounting
of the module with respect to the
front of the panel or enclosure.
The flush-mount design
accommodates a large variety of
panel thickness, i.e., 0.04 in. min.
to 0.10 in. max. Note the
reference plane for the flush-
mount design is the interior side
of the panel or enclosure. The
recommended distance from the
centerline of the transceiver front
solder posts to the inside wall of
the panel is 0.55 in. This option
contacts the inside panel or
enclosure wall on all four sides of
this metal shield. See Figure 8 for
the mechanical drawing
dimensions of this shield.
The two metallized designs are
comparable in their shielding
effectiveness. Both design
options connect only to the
equipment chassis and not to the
signal or logic ground of the
circuit board within the
equipment closure. The front
panel aperture dimensions are
recommended in Figures 7 and 9.
When layout of the printed circuit
board is done to incorporate
these metal-shielded transceivers,
keep the area on the printed
circuit board directly under the
metal shield free of any
components and circuit board
traces. For additional EMI
performance advantage, use
duplex SC fiber-optic connectors
that have low metal content
inside them. This lowers the
ability of the metal fiber-optic
connectors to couple EMI out
through the aperture of the panel
or enclosure.