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Электронный компонент: HFBR-5903

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Agilent HFBR-5903/5903E/5903A
FDDI, Fast Ethernet Transceivers
in 2 x 5 Package Style
Data Sheet
Description
The HFBR-5900 family of trans-
ceivers from Agilent provide the
system designer with products
to implement a range of FDDI
and ATM (Asynchronous
Transfer Mode) designs at the
100 Mb/s-
125 MBd rate.
The transceivers are all supplied
in the new industry standard
2 x 5 DIP style with a MT-RJ
fiber connector interface.
FDDI PMD, ATM and Fast Ethernet
2 km Backbone Links
The HFBR-5903 is a 1300 nm
product with optical
performance compliant with the
FDDI PMD standard. The FDDI
PMD standard is ISO/IEC
9314-3: 1990 and ANSI X3.166 -
1990.
These transceivers for 2 km
multimode fiber backbones are
supplied in the small 2 x 5 MT-
RJ package style for those
designers who want to avoid the
larger MIC/R (Media Interface
Connector/Receptacle) defined
in the FDDI PMD standard.
Agilent also provides several
other FDDI products compliant
with the PMD and SM-PMD
standards. These products are
available with MIC/R, ST
, SC
and FC connector styles. They
are available in the 1 x 9, 1 x 13
Features
Multisourced 2 x 5 package style
with MT-RJ receptacle
Single +3.3 V power supply
Wave solder and aqueous wash
process compatible
Manufactured in an ISO 9002
certified facility
Full compliance with the optical
performance requirements of the
FDDI PMD standard
Full compliance with the FDDI
LCF-PMD standard
Full compliance with the optical
performance requirements of the
ATM 100 Mb/s physical layer
Full compliance with the optical
performance requirements of
100 Base-FX version of
IEEE 802.3u
Applications
Multimode fiber backbone links
Multimode fiber wiring closet to
desktop links
Ordering Information
The HFBR-5903 1300 nm
product is available for
production orders through the
Agilent Component Field Sales
Offices and Authorized
Distributors world wide.
HFBR-5903
=
0C to +70C
No Shield
HFBR-5903E =
0C to +70C
Extended
Shield
HFBR-5903A =
-40C to +85C
No Shield.
and 2 x 11 transceiver and 16
pin transmitter/receiver package
styles for those designs that
require these alternate
configurations.
The HFBR-5903 is also useful for
both ATM 100 Mb/s interfaces
and Fast Ethernet 100 Base-FX
interfaces. The ATM Forum
User-Network Interface (UNI)
Standard, Version 3.0, defines
the Physical Layer for 100 Mb/s
Multimode Fiber Interface for
ATM in Section 2.3 to be the
FDDI PMD Standard. Likewise,
the Fast Ethernet Alliance
defines the Physical Layer for
100 Base-FX for Fast Ethernet to
be the FDDI PMD Standard.
ATM applications for physical
layers other than 100 Mb/s
Multimode Fiber Interface are
supported by Agilent. Products
are available for both the single-
mode and the multimode fiber
SONET OC-3c (STS-3c), SDH
(STM-1) ATM interfaces and the
155 Mb/s-194 MBd multimode
fiber ATM interface as specified
in the ATM Forum UNI.
Contact your Agilent sales
representative for information
on these alternative FDDI and
ATM products.
2
DATA OUT
SIGNAL
DETECT
DATA IN
QUANTIZER IC
LED DRIVER IC
PIN PHOTODIODE
PRE-AMPLIFIER
SUBASSEMBLY
LED OPTICAL
SUBASSEMBLY
DATA OUT
DATA IN
MT-RJ
RECEPTACLE
R
X
SUPPLY
T
X
SUPPLY
R
X
GROUND
T
X
GROUND
Transmitter Sections
The transmitter section of the
HFBR-5903 utilizes a 1300 nm
Surface Emitting InGaAsP LED.
This LED is packaged in the
optical subassembly portion of
the transmitter section. It is
driven by a custom silicon IC
which converts differential
PECL logic signals, ECL
referenced (shifted) to a +3.3 V
supply, into an analog LED drive
current.
Receiver Sections
The receiver section of the
HFBR-5903 utilizes an InGaAs
PIN photodiode coupled to a
custom silicon transimpedance
preamplifier IC. It is packaged
in the optical subassembly
portion of the receiver.
This PIN/preamplifier combi-
nation is coupled to a custom
quantizer IC which provides the
final pulse shaping for the logic
output and the Signal Detect
function. The Data output is dif-
ferential. The Signal Detect
output is single-ended. Both Data
and Signal Detect outputs are
PECL compatible, ECL
referenced (shifted) to a +3.3 V
power supply. The receiver
outputs, Data Out and Data Out
Bar, are squelched at Signal
Detect Deassert. That is, when
the light input power decreases
to a typical -38 dBm or less, the
Signal Detect Deasserts, i.e. the
Signal Detect output goes to a
PECL low state. This forces the
receiver outputs, Data Out and
Data Out Bar to go to steady
PECL levels High and Low
respectively.
Package
The overall package concept for
the Agilent transceiver consists
of the following basic elements;
two optical subassemblies, an
electrical subassembly and the
housing as illustrated in
Figure 1.
The package outline drawing
and pin out are shown in
Figures 2 and 3. The details of
this package outline and pin out
are compliant with the multi-
source definition of the 2 x 5
DIP. The low profile of the
Agilent transceiver design
complies with the maximum
height allowed for the MT-RJ
connector over the entire length
of the package.
The optical subassemblies utilize
a high-volume assembly process
together with low-cost lens
elements which result in a cost-
effective building block.
The electrical subassembly con-
sists of a high volume multilayer
printed circuit board on which
the IC and various surface-
mounted passive circuit
elements are attached.
The receiver section includes an
internal shield for the electrical
and optical subassemblies to
ensure high immunity to
external EMI fields.
The outer housing is electrically
conductive. The MT-RJ port is
molded of filled nonconductive
plastic to provide mechanical
strength and electrical isolation.
The solder posts of the Agilent
design are isolated from the
internal circuit of the
transceiver.
The transceiver is attached to a
printed circuit board with the
ten signal pins and the two
solder posts which exit the
bottom of the housing. The two
solder posts provide the primary
mechanical strength to
withstand the loads imposed on
the transceiver by mating with
the MT-RJ connectored fiber
cables.
Figure 1. Block Diagram.
3
Figure 2. Package Outline Drawing
FRONT VIEW
13.97
(0.55)
MIN.
4.5 0.2
(0.177 0.008)
(PCB to OPTICS
CENTER LINE)
5.15
(0.20)
(PCB to OVERALL
RECEPTACLE CENTER
LINE)
DIMENSIONS IN MILLIMETERS (INCHES)
NOTES:
1. THIS PAGE DESCRIBES THE MAXIMUM PACKAGE OUTLINE, MOUNTING STUDS, PINS AND THEIR RELATIONSHIPS TO EACH OTHER.
2. TOLERANCED TO ACCOMMODATE ROUND OR RECTANGULAR LEADS.
3. ALL 12 PINS AND POSTS ARE TO BE TREATED AS A SINGLE PATTERN.
4. THE MT-RJ HAS A 750 m FIBER SPACING.
5. THE MT-RJ ALIGNMENT PINS ARE IN THE MODULE.
6. FOR SM MODULES, THE FERRULE WILL BE PC POLISHED (NOT ANGLED).
7. SEE MT-RJ TRANSCEIVER PIN OUT DIAGRAM FOR DETAILS.
37.56 (1.479) MAX.
SIDE VIEW
49.56 (1.951) REF.
9.8
(0.386)
MAX.
9.3
(0.366)
MAX.
1.07
(0.042)
3.3
(0.13)
0.61
(0.024)
Pin 1
TOP VIEW
9.6
(0.378)
MAX.
13.59
(0.535)
MAX.
12
(0.472)
7.59
(0.299)
8.6
(0.339)
1.5
(0.059)
17.778
(0.7)
1.778
(0.07)
7.112
(0.28)
+0
-0.2
(+000)
(-008)
10.16
(0.4)
Case Temperature
Measurement Point
4
Figure 3. Pin Out Diagram.
Pin Descriptions:
Pin 1 Receiver Signal Ground V
EE
RX:
Directly connect this pin to the
receiver ground plane.
Pin 2 Receiver Power Supply V
CC
RX:
Provide +3.3 V dc via the
recommended receiver power
supply filter circuit. Locate the
power supply filter circuit as
close as possible to the V
CC
RX
pin.
Pin 3 Signal Detect SD:
Normal optical input levels to
the receiver result in a logic "1"
output.
Low optical input levels to the
receiver result in a fault
condition indicated by a logic
"0" output.
This Signal Detect output can be
used to drive a PECL input on
an upstream circuit, such as
Signal Detect input or Loss of
Signal-bar.
Pin 4 Receiver Data Out Bar RD-:
No internal terminations are
provided. See recommended
circuit schematic.
Pin 5 Receiver Data Out RD+:
No internal terminations are
provided. See recommended
circuit schematic.
Pin 6 Transmitter Power Supply
V
CC
TX:
Provide +3.3 V dc via the
recommended transmitter
power supply filter circuit.
Locate the power supply filter
circuit as close as possible to the
V
CC
TX pin.
Pin 7 Transmitter Signal Ground
V
EE
TX:
Directly connect this pin to the
transmitter ground plane.
Pin 8 Transmitter Disable T
DIS
:
No internal connection. Optional
feature for laser based products
only. For laser based products
connect this pin to +3.3 V TTL
logic high "1" to disable module.
To enable module connect to
TTL logic low "0".
Pin 9 Transmitter Data In TD+:
No internal terminations are
provided. See recommended
circuit schematic.
Pin 10 Transmitter Data In Bar TD-:
No internal terminations are
provided. See recommended
circuit schematic.
Mounting Studs/Solder Posts
The mounting studs are
provided for transceiver
mechanical attachment to the
circuit board. It is
recommended that the holes in
the circuit board be connected to
chassis ground.
TRANSMITTER DATA IN BAR
TRANSMITTER DATA IN
TRANSMITTER DISABLE (LASER BASED PRODUCTS ONLY)
TRANSMITTER SIGNAL GROUND
TRANSMITTER POWER SUPPLY
RX
TX
o
o
o
o
o
1
2
3
4
5
o
o
o
o
o
10
9
8
7
6
RECEIVER SIGNAL GROUND
RECEIVER POWER SUPPLY
SIGNAL DETECT
RECEIVER DATA OUT BAR
RECEIVER DATA OUT
Top
View
Mounting
Studs/Solder
Posts
5
Application Information
The Applications Engineering
group is available to assist you
with the technical under-
standing and design trade-offs
associated with these trans-
ceivers. You can contact them
through your Agilent sales
representative.
The following information is
provided to answer some of the
most common questions about
the use of these parts.
Transceiver Optical Power Budget
versus Link Length
Optical Power Budget (OPB) is
the available optical power for a
fiber optic link to accommodate
fiber cable losses plus losses due
to in-line connectors, splices,
optical switches, and to provide
margin for link aging and
unplanned losses due to cable
plant reconfiguration or repair.
Figure 4 illustrates the predicted
OPB associated with the
transceiver specified in this data
sheet at the Beginning of Life
(BOL). These curves represent
the attenuation and chromatic
plus modal dispersion losses
associated with the 62.5/125 m
and 50/125 m fiber cables only.
The area under the curves
represents the remaining OPB at
any link length, which is
available for overcoming non-
fiber cable related losses.
Agilent LED technology has
produced 1300 nm LED devices
with lower aging characteristics
than normally associated with
these technologies in the
industry. The industry conven-
tion is 1.5 dB aging for 1300 nm
LEDs. The Agilent 1300 nm
LEDs will experience less than
1 dB of aging over normal com-
mercial equipment mission life
periods. Contact your Agilent
sales representative for
additional details.
Figure 4 was generated with a
Agilent fiber optic link model
containing the current industry
conventions for fiber cable
specifications and the FDDI
PMD and LCF-PMD optical
parameters. These parameters
are reflected in the guaranteed
performance of the transceiver
specifications in this data sheet.
This same model has been used
extensively in the ANSI and
IEEE committees, including the
ANSI X3T9.5 committee, to
establish the optical
performance requirements for
various fiber optic interface
standards. The cable parameters
used come from the ISO/IEC
JTC1/SC 25/WG3 Generic
Cabling for Customer Premises
per DIS 11801 document and the
EIA/TIA-568-A Commercial
Building Telecommunications
Cabling Standard per SP-2840.
Transceiver Signaling Operating
Rate Range and BER Performance
For purposes of definition, the
symbol (Baud) rate, also called
signaling rate, is the reciprocal
of the shortest symbol time. Data
rate (bits/sec) is the symbol rate
divided by the encoding factor
used to encode the data
(symbols/bit).
When used in FDDI and ATM
100 Mb/s applications the
performance of the 1300 nm
transceivers is guaranteed over
the signaling rate of 10 MBd to
125 MBd to the full conditions
listed in individual product
specification tables.
The transceivers may be used
for other applications at signal-
ing rates outside of the 10 MBd
to 125 MBd range with some
penalty in the link optical power
budget primarily caused by a
reduction of receiver sensitivity.
Figure 5 gives an indication of
the typical performance of these
1300 nm products at different
rates.
These transceivers can also be
used for applications which
require different Bit Error Rate
(BER) performance. Figure 6
illustrates the typical trade-off
between link BER and the
receivers input optical power
level.
Figure 4. Typical Optical Power Budget at BOL
versus Fiber Optic Cable Length.
Figure 5. Transceiver Relative Optical Power
Budget at Constant BER vs. Signaling Rate.
OPTICAL POWER BUDGET (dB)
0
FIBER OPTIC CABLE LENGTH (km)
0.5
1.5
2.0
2.5
12
10
8
6
4
2
1.0
0.3
HFBR-5903, 62.5/125 m
HFBR-5903
50/125 m
CONDITIONS:
1. PRBS 2 7-1
2. DATA SAMPLED AT CENTER OF DATA SYMBOL.
3. BER = 10-6
4. TA = +25 C
5. VCC = 3.3 V dc
6. INPUT OPTICAL RISE/FALL TIMES = 1.0/ 2.1 ns.
-1
-0.5
0
0.5
1
1.5
2
2.5
0
25
50
75
100
125
150
175
200
SIGNAL RATE (MBd)
TRANSCEIVER RELATIVE POWER BUDGET
AT CONSTANT BER (dB)