Low Cost, Industry Standard
FDDI MIC Transceivers
Technical Data
HFBR-5111 (2x11)
HFBR-5112 (Narrow 1x13)
HFBR-5113 (Standard 1x13)
Features
• Full Compliance with the
FDDI PMD Standard
• Full Compliance with the
Optical Performance
Requirements of the ATM
100 Mbps Physical Layer
• Full Compliance with the
Optical Performance
Requirements of the Fast
Ethernet Physical Layer
• Multisourced Package Style
with:
- 2x11 or 1x13 Pin
Configuration
- MIC Receptacle
- Field Changeable Keying
• Wave Solder and Aqueous
Wash Process Compatible
Package
• Internal Shielding for Low
EMI Emissions and High
EMI Immunity
• Single +5V Power Supply
• Shifted ECL Logic Interface
Directly Compatible with
FDDI PHY Circuits
• Manufactured in an ISO
9001 Certified Facility
• Point-to-Point Data
Communications
• Replaces DLX2012-FD and
DLX2020-FD Model
Transceivers
Description
The HFBR-511X family of trans-
ceivers from Agilent Technologies
consists of high performance,
cost effective modules for optical
data communication applications
at the 100 Mbps/125 MBd rate.
The transceivers feature full
compliance with the Fiber
Distributed Data Interface (FDDI)
Physical Media Dependent (PMD)
standard. This standard has been
approved as an International
Standard, ISO/IEC 9314-3, and
an American National Standard,
ANSI X3.166 - 1990. The HFBR-
5111 represents the 2x11
package style. The “2x11”
denotes two rows of eleven pins.
The HFBR-5112 and HFBR-5113
represent the Narrow and
Standard 1x13 package styles,
respectively. The “1x13” denotes
one row of thirteen pins.
The modules are designed for 50
or 62.5
µm
core multimode
optical fiber and operate at a
nominal wavelength of 1300 nm.
Each transceiver incorporates
our high-performance, reliable,
long-wavelength optical devices
and proven circuit technology to
give long life and consistent
performance.
The transceivers are optimized
for 125 MBd operation but can be
used over a wide range of signal
rates. The transceivers are
guaranteed to meet FDDI PMD
specifications when used within
the operating conditions specified
in this document.
These HFBR-511X Series trans-
ceivers are also useful for both
ATM 100 Mbps 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 Mbps
Multimode Fiber Interface for
ATM in Section 2.3 to be the
Applications
• FDDI Concentrators,
Bridges, Routers, and
Network Interface Cards
• 100 Mbps ATM Interfaces
• Fast Ethernet Interfaces
2
FDDI PMD standard. Likewise,
the Fast Ethernet Alliance defines
the Physical Layer for the 100
Base-FX Version of IEEE 802.3u
to be the FDDI PMD standard.
Agilent also provides several
other FDDI products compliant
with the FDDI Low Cost Fiber
(LCF) -PMD and Single Mode
(SM) -PMD standards. These
products are available with ST,
SC, and FC connector styles.
They are available in the 1x9
transceiver and 14- and 16-pin
transmitter/receiver package
styles for those designs that
require these alternate
configurations. Contact your
Agilent sales representative for
information on these alternative
FDDI products.
Transmitter Section
The transmitter section of the
HFBR-511X Series utilizes a 1300
nm surface emitting InGaAsP
LED. The LED is packaged in the
optical subassembly portion of
the transmitter section. It is dc-
coupled to a custom IC which
converts differential-input, PECL
logic signals, ECL referenced
(shifted) to a +5 V power supply,
into an analog LED drive current.
Receiver Section
The receiver section of the
HFBR-511X Series utilizes an
InGaAs PIN photodiode coupled
to a custom silicon transimped-
ance preamplifier IC. They are
packaged in the optical sub-
assembly portion of the receiver.
The PIN/preamplifier combina-
tion is ac-coupled to a custom
quantizer IC which provides the
final pulse shaping for the logic
output and the Signal Detect
function. Both the Data and
Signal Detect outputs are
differential. Also, both Data and
Signal Detect outputs are PECL
compatible, ECL referenced
(shifted) to a +5 V power supply.
Package
The overall package concept for
the Agilent transceiver consists of
the following basic elements: two
optical subassemblies, an
electrical subassembly, and the
housing with full compliance to
the FDDI PMD standard. A block
diagram is illustrated in Figure 1.
The package outline drawings
and pin-outs are shown in Figures
2 and 3. These are compliant with
the industry standard 2x11 and
1x13 pin configurations.
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 subassemblies
consist of a high-volume, multi-
layer printed circuit board on
which the IC chips and various
surface-mounted passive circuit
elements are attached.
Each transceiver package
includes internal shields for the
electrical and optical subassem-
blies to ensure low EMI emissions
and high immunity to external
EMI fields.
The outer housings including the
MIC receptacles are molded of
filled non-conductive plastic to
provide mechanical strength and
electrical isolation. The solder
posts of each package design are
isolated from the circuit design of
the transceiver and do not require
connection to a ground plane on
the circuit board.
Each transceiver is attached to its
printed circuit boards with the
2x11 or 1x13 signal pins and the
solder posts which exit the
bottom of the housing. The solder
posts provide the primary
mechanical strength to withstand
the loads imposed on the
transceiver when mating with
MIC-connectored fiber cables.
Application Information
The Applications Engineering
group of the Optical Communica-
tion Division is available to assist
you with the technical under-
ELECTRICAL SUBASSEMBLY
MEDIA INTERFACE CONNECTOR
RECEPTACLE
DIFFERENTIAL
DATA OUT
DIFFERENTIAL
SIGNAL
DETECT OUT
PIN PHOTODIODE
QUANTIZER IC
PREAMP
IC
OPTICAL
SUBASSEMBLIES
TOP VIEW
DIFFERENTIAL
DATA IN
DRIVER IC
LED
Figure 1. HFBR-5111/-5112/-5113 Block Diagram.
3
1.52
1.22
4X
X
0.050 0.060
1.91
MAX.
0.075
2.54
0.100
34.34
1.352
30.48
1.200
2X ø
3.80
0.150
4X ø
22X ø
5.08
0.200
1.50
SOLDER POSTS
0.060
0.48
LEADS
0.019
A
81.32
3.202
63.5
2.500
45.72 44.45
1.800 1.750
OPTICAL
REFERENCE
PLANE
40.64
1.600
35.56
1.400
2.54
TYP.
0.100
2.95
0.116
PART NUMBER
DATE CODE
COUNTRY OF ORIGIN
82.5
MAX.
3.248
78.87
3.105
LATCH
POINTS
ACCEPTS SELF TAPPING
2X – M2X0.4 SCREW FOR
OPTIONAL MOUNTING
2X
1.52
SQ.
0.060
16.00
MAX.
0.630
2.95
0.116
35.80
MAX.
1.409
FDDI KEY
LOCATION
PLUG – REF.
33.02
MAX.
1.300
0.85
0.034
11.87
MAX.
0.467
9.40
MAX.
0.370
NOTES:
1. ALL DIMENSIONS ARE MILLIMETERS OVER INCHES.
2. ALL DIMENSIONS ARE NOMINAL UNLESS OTHERWISE SPECIFIED.
3. THE LEADS ARE TIN-LEAD PLATED PHOSPHOR BRONZE.
4. THE POSTS ARE TIN-LEAD PLATED BRASS.
5. THE HOUSING IS GLASS FIBER FILLED BLACK POLYETHERIMIDE.
6. THE MODULE IS SHOWN WITHOUT THE FIELD KEY INSTALLED.
Figure 2(a). HFBR-5111 Outline Drawing.
34.46 (1.357)
30.48 (1.200)
29.00 (1.142)
2.54 TYP.
(0.100)
24.86
(0.979)
9.14
(0.360)
5.79
(0.228)
19.99
(0.787)
22.86
(0.900)
13X
∅
0.48 LEADS
(0.019)
2X
∅
1.00
(0.039)
2X
∅
1.52 SOLDER POSTS
(0.060)
A
2.95
(0.116)
OPTICAL
REFERENCE
PLANE
41.30
(1.626)
39.94
(1.533)
LATCH
POINTS
PART NUMBER
DATE CODE
COUNTRY OF ORIGIN
66.16
MAX.
(2.605)
2X
∅
3.00
(0.118)
16.00
MAX.
(0.630)
3.68
(0.145)
0.80
(0.031)
35.80 MAX.
(1.409)
FDDI KEY
LOCATION
PLUG – REF.
33.02
(1.300)MAX.
11.87
MAX.
(0.467)
9.40
MAX.
(0.370)
Figure 2(b). HFBR-5112 Outline Drawing.
4
38.10 (1.500)
34.46 (1.357)
30.48 (1.200)
29.00 (1.142)
2.54 TYP.
(0.100)
17.24
(0.679) 12.37
(0.487)
13.41
16.76 (0.528)
OPTICAL
(0.660)
REFERENCE
PLANE
48.92
(1.926)
13X
∅
0.48 LEADS
(0.019)
2X
∅
1.00
(0.039)
4X
∅
2.00 SOLDER POSTS
(0.079)
43.80
MAX.
(1.724)
A
15.24
(0.600)
2.95
(0.116)
15.24
(0.600)
46.56
(1.833)
LATCH
POINTS
4X R 2.80
(0.110)
2X
∅
3.00
(0.118)
PART NUMBER
DATE CODE
COUNTRY OF ORIGIN
66.16
MAX.
(2.605)
16.00
MAX.
(0.630)
4.50
(0.177)
0.80
(0.031)
35.80
MAX.
(1.409)
FDDI KEY
LOCATION
PLUG – REF.
33.02
(1.300)MAX.
NOTES:
1. ALL DIMENSIONS ARE MILLIMETERS OVER (INCHES).
2. ALL DIMENSIONS ARE NOMINAL UNLESS OTHERWISE SPECIFIED.
3. THE LEADS ARE TIN-LEAD PLATED PHOSPHOR BRONZE.
4. THE POSTS ARE TIN-LEAD PLATED BRASS.
5. THE HOUSING IS GLASS FIBER FILLED BLACK POLYETHERIMIDE.
6. THE MODULE IS SHOWN WITHOUT THE FIELD KEY INSTALLED.
11.87
MAX.
(0.467)
9.40
MAX.
(0.370)
Figure 2(c). HFBR-5113 Outline Drawing.
TOP VIEW
13
GND 1
NC
V
CC
V
CC
GND
2
3
4
5
22 GND
21 V
CC
20 V
CC
19 V
CC
18 V
CC
17 GND
16 GND
15 GND
14 V
BB
13 DATA IN
12 DATA IN
TOP VIEW
GND 6
SD 7
SD 8
V
CC
9
DATA OUT 10
DATA OUT 11
1
GND
V
B
DATA IN
DATA IN
TX V
CC
GND
GND
RX V
CC
SD
SD
DATA OUT
DATA OUT
GND
(a) HFBR-5111
(b) HFBR-5112/-5113
Figure 3. Pin Assignments.
5
OPB – OPTICAL POWER BUDGET – dB
14
12
10
8
6
4
2
0
0
50/125 µm
62.5/125 µm
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
FIBER OPTIC CABLE LENGTH – km
Figure 4. Optical Power Budget at
BOL vs. Fiber Optic Cable Length.
Agilent LED technology has
produced 1300 nm LED devices
with lower aging characteristics
than normally associated with
these technologies in the
industry. The industry convention
is 1.5 dB aging for 1300 nm
LEDs, however HP 1300 nm
LEDs will experience less than 1
dB of aging over normal commer-
cial 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
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 Telecom-
munications Cabling Standard per
SP-2840.
Transceiver Signaling
Operating Rate Range and
BER Performance
For purposes of definition, the
symbol rate (Baud), also called
signaling rate, is the reciprocal of
the 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 100 Mbps
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 the
individual product specification
tables.
The transceivers may be used for
other applications at signaling
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
receiver’s input optical power
level.
standing and design trade-offs
associated with this transceiver.
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
The 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 trans-
ceivers specified in this data
sheet at the Beginning of Life
(BOL). This curve represents the
attenuation and chromatic plus
modal dispersion losses
associated with the 62.5/125
µm
and 50/125
µm
fiber cables only.
The area under the curve
represents the remaining OPB at
any link length, which is available
for overcoming non-fiber cable
related losses.
TRANSCEIVER RELATIVE OPTICAL POWER
BUDGET AT CONSTANT BER – dB
3.0
2.5
2.0
1.5
1.0
0.5
0
0
25
50
75 100 125 150 175 200
SIGNAL RATE (MBd)
CONDITIONS:
1. PRBS 2
7
-1
2. DATA SAMPLED AT CENTER OF DATA SYMBOL.
3. BER = 10
-6
4. T
A
= 25° C
5. V
CC
= 5 V
dc
6. INPUT OPTICAL RISE/FALL TIMES = 1.0/2.1 ns.
Figure 5. Transceiver Relative
Optical Power Budget at Constant
BER vs. Signaling Rate.
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