HFBR-24E2OPTIONM [AGILENT]
Receiver, 175Mbps, SC Connector, DIP, Panel Mount;型号: | HFBR-24E2OPTIONM |
厂家: | AGILENT TECHNOLOGIES, LTD. |
描述: | Receiver, 175Mbps, SC Connector, DIP, Panel Mount |
文件: | 总29页 (文件大小:392K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
Low Cost, Miniature Fiber
®
Optic Components with ST ,
SMA, SC and FC Ports
Technical Data
HFBR-0400 Series
Features
Applications
• Local Area Networks
• Computer to Peripheral
Links
• Meets IEEE 802.3 Ethernet
and 802.5 Token Ring
Standards
• Low Cost Transmitters and
Receivers
• Choice of ST , SMA, SC or
FC Ports
• 820 nm Wavelength
Technology
• Signal Rates up to 175
Megabaud
• Link Distances up to 4 km
• Computer Monitor Links
• Digital Cross Connect Links
• Central Office Switch/PBX
Links
• Video Links
• Modems and Multiplexers
• Suitable for Tempest
Systems
®
Transmitters and receivers are
directly compatible with popular
“industry-standard” connectors:
ST, SMA, SC and FC. They are
completely specified with
multiple fiber sizes; including
50/125 µm, 62.5/125 µm, 100/
140 µm, and 200 µm.
• Industrial Control Links
• Specified with 50/125 µm,
62.5/125 µm, 100/140 µm,
Description
®
and 200 µm HCS Fiber
The HFBR-0400 Series of compo-
nents is designed to provide cost
effective, high performance fiber
optic communication links for
information systems and
• Repeatable ST Connections
within 0.2 dB Typical
• Unique Optical Port Design
for Efficient Coupling
Complete evaluation kits are
available for ST and SMA product
offerings; including transmitter,
receiver, connectored cable, and
technical literature. In addition,
ST and SMA connectored cables
are available for evaluation.
• Auto-Insertable and Wave
Solderable
• No Board Mounting Hard-
ware Required
• Wide Operating
Temperature Range
-40°C to 85°C
industrial applications with link
distances of up to 4 kilometers.
With the HFBR-24X6, the 125
MHz analog receiver, data rates
of up to 175 megabaud are
attainable.
• AlGaAs Emitters 100%
Burn-In Ensures High
Reliability
• Conductive Port Option with
the SMA and ST Threaded
Port Styles
®
ST is a registered trademark of AT&T.
®
HCS is a registered trademark of the SpecTran Corporation.
2
HFBR-0400 Series Part Number Guide
HFBR X4XXaa
1 = Transmitter
2 = Receiver
Option T (Threaded Port Option)
Option C (Conductive Port Receiver Option)
Option M (Metal Port Option)
4 = 820 nm Transmitter and
Receiver Products
Option K (Kinked Lead Option)
TA = Square pinout/straight lead
TB = Square pinout/bent leads
0 = SMA, Housed
1 = ST, Housed
HA = Diamond pinout/straight leads
HB = Diamond pinout/bent leads
2 = FC, Housed
E = SC, Housed
2 = Tx, Standard Power
4 = Tx, High Power
2 = Rx, 5 MBd, TTL Output
6 = Rx, 125 MHz, Analog Output
3 = SMA Port, 90 deg. Bent Leads
4 = ST Port, 90 deg. Bent Leads
5 = SMA Port, Straight Leads
6 = ST Port, Straight Leads
LINK SELECTION GUIDE
Data Rate (MBd) Distance (m)
Transmitter
HFBR-14X2
HFBR-14X4
HFBR-14X4
Receiver
Fiber Size (µm) Evaluation Kit
5
5
1500
2000
2700
HFBR-24X2
HFBR-24X2
HFBR-24X6
200 HCS
62.5/125
62.5/125
N/A
HFBR-04X0
HFBR-0414,
HFBR-0463
20
32
55
125
155
175
2200
1400
700
600
500
HFBR-14X4
HFBR-14X4
HFBR-14X4
HFBR-14X4
HFBR-14X4
HFBR-24X6
HFBR-24X6
HFBR-24X6
HFBR-24X6
HFBR-24X6
62.5/125
62.5/125
62.5/125
62.5/125
62.5/125
HFBR-0414
HFBR-0414
HFBR-0416
HFBR-0416
HFBR-0416
For additional information on specific links see the following individual link descriptions. Distances measured over temperature range
from 0 to 70°C.
range of application notes com-
plete with circuit diagrams and
board layouts. Furthermore, HP’s
application support group is
always ready to assist with any
design consideration.
make a functional fiber-optic
transceiver. HP offers a wide
selection of evaluation kits for
hands-on experience with fiber-
optic products as well as a wide
Applications Support
Guide
This section gives the designer
information necessary to use the
HFBR-0400 series components to
Application Literature
Title
HFBR-0400 Series
Reliability Data
Description
Transmitter & Receiver Reliability Data
Application Bulletin 73
Application Bulletin 78
Application Note 1038
Application Note 1065
Application Note 1073
Application Note 1086
Low Cost Fiber Optic Transmitter & Receiver Interface Circuits
Low Cost Fiber Optic Links for Digital Applications up to 155 MBd
Complete Fiber Solutions for IEEE 802.3 FOIRL, 10Base-FB and 10 Base-FL
Complete Solutions for IEEE 802.5J Fiber-Optic Token Ring
HFBR-0319 Test Fixture for 1X9 Fiber Optic Transceivers
Optical Fiber Interconnections in Telecommunication Products
3
HFBR-0400 Series
Evaluation Kits
HFBR-0410 ST Evaluation Kit
Contains the following :
• One HFBR-1412 transmitter
• One HFBR-2412 five megabaud
TTL receiver
• Three meters of ST connec-
tored 62.5/125 (µm fiber optic
cable with low cost plastic
ferrules.
HFBR-0416 Evaluation Kit
Contains the following:
Handling and Design
Information
Each part comes with a protective
port cap or plug covering the
optics. These caps/plugs will vary
by port style. When soldering, it
is advisable to leave the protec-
tive cap on the unit to keep the
optics clean. Good system
performance requires clean port
optics and cable ferrules to avoid
obstructing the optical path.
Clean compressed air often is
sufficient to remove particles of
dirt; methanol on a cotton swab
also works well.
• One fully assembled 1x9
transceiver board for 155 MBd
evaluation including:
-HFBR-1414 transmitter
-HFBR-2416 receiver
-circuitry
• Related literature
HFBR-0463 Ethernet MAU
Evaluation Kit
Contains the following:
• One fully assembled Media
Attachment Unit (MAU) board
which includes:
-HFBR-1414 transmitter
-HFBR-2416 receiver
-HFBR-4663 IC
• Related literature
HFBR-0414 ST Evaluation Kit
Includes additional components
to interface to the transmitter and
receiver as well as the PCB to
reduce design time.
Contains the following:
• One HFBR-1414T transmitter
• One HFBR-2416T receiver
• Three meters of ST connec-
tored 62.5/125 µm fiber optic
cable
• Printed circuit board
• ML-4622 CP Data Quantizer
• 74ACTllOOON LED Driver
• LT1016CN8 Comparator
• 4.7 µH Inductor
Recommended Chemicals for
Cleaning/Degreasing
HFBR-0400 Products
Alcohols: methyl, isopropyl,
isobutyl. Aliphatics: hexane,
heptane, Other: soap solution,
naphtha.
• Related literature
Note: Cable not included. Order
HFBR-BXS010 seperately (2
pieces)
Package and Handling
Information
Package Information
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, HP
does not recommend the use of
cleaners that use halogenated
hydrocarbons because of their
potential environmental harm.
All HFBR-0400 Series
transmitters and receivers are
housed in a low-cost, dual-inline
package that is made of high
strength, heat resistant, chem-
ically resistant, and UL 94V-O
• Related literature
HFBR-0400 SMA Evaluation
Kit
Contains the following :
• One HFBR-1402 transmitter
• One HFBR-2402 five megabaud
TTL receiver
• Two meters of SMA
connectored 1000 µm plastic
optical fiber
®
flame retardant ULTEM (plastic
(UL File #E121562). The
transmitters are easily identified
by the light grey color connector
port. The receivers are easily
identified by the dark grey color
connector port. (Black color for
conductive port.) The package is
designed for auto-insertion and
wave soldering so it is ideal for
high volume production
• Related literature
applications.
®
Ultem is a registered Trademark of the GE corporation.
4
1/4 - 36 UNS 2A THREAD
Mechanical Dimensions
HFBR-0400 SMA Series
12.7
(0.50)
HFBR-X40X
22.2
(0.87)
6.35
(0.25)
12.7
(0.50)
6.4
10.2
(0.40)
3.6
(0.14)
DIA.
(0.25)
5.1
(0.20)
3.81
(0.15)
1.27
(0.05)
2.54
(0.10)
PINS 1,4,5,8
0.51 X 0.38
2.54
(0.020 X 0.015)
(0.10)
PINS 2,3,6,7
0.46
(0.018)
DIA.
PIN NO. 1
INDICATOR
PART MARKING
HFBR-X43X
13.0
(0.51)
4.8
TYP.
(0.19)
2.5 DIA. PIN
(0.10) CIRCLE
7.1
DIA.
(0.28)
2.3
TYP.
(0.09)
8.6
DIA.
(0.34)
7.1
(0.28)
1
4
2
3
1/4 - 36 UNS 2A
THREAD
3.6
MIN.
(0.14)
2.5
TYP.
(0.10)
0.46 DIA.
(0.018) TYP.
2.0
(0.08)
NOTE 2
3.0
(0.12)
TYP.
2.5
TYP.
(0.10)
4.1
(0.16)
PART MARKING
HFBR-X45X
13.0
(0.51)
7.1
(0.28)
DIA.
13.2
(0.52)
2.5 DIA. PIN
(0.10) CIRCLE
1/4 - 36 UNS 2A
THREAD
8.6
DIA.
(0.34)
7.1
(0.28)
1
4
2
3
9.1
(0.36)
NOTE 2
2.0
(0.08)
0.46
DIA.
(0.018)
4.1
(0.16)
NOTE: ALL DIMENSIONS IN MILLIMETRES AND (INCHES).
5
Mechanical Dimensions
HFBR-0400 ST Series
12.7
(0.50)
HFBR-X41X
8.2
(0.32)
27.2
(1.07)
6.35
(0.25)
12.7
(0.50)
7.0
10.2
(0.40)
3.6
(0.14)
DIA.
(0.28)
5.1
(0.20)
3.81
(0.15)
1.27
(0.05)
2.54
(0.10)
PINS 1,4,5,8
0.51 X 0.38
(0.020 X 0.015)
2.54
(0.10)
PINS 2,3,6,7
0.46
(0.018)
DIA.
PIN NO. 1
INDICATOR
HFBR-X44X
18.6
(0.73)
4.9
(0.19)
TYP.
8.2
(0.32)
2.5 DIA. PIN
(0.10) CIRCLE
7.1
DIA.
(0.28)
2.4
(0.09)
TYP.
8.6
(0.34)
DIA.
1
4
2
3
7.1
(0.28)
7.0
(0.28)
DIA.
PART MARKING
3.6
MIN.
(0.14)
2.5
(0.10)
TYP.
0.46
(0.018)
DIA.
2.0
(0.08)
NOTE 2
3.0
(0.12)
TYP.
2.5
(0.10)
TYP.
HFBR-X46X
18.6
(0.73)
8.2
(0.32)
13.2
(0.52)
2.5 DIA. PIN
(0.10) CIRCLE
7.1
DIA.
(0.28)
8.6
(0.34)
DIA.
7.1
(0.28)
1
4
2
3
7.0
(0.28)
DIA.
9.1
(0.36)
PART MARKING
NOTE 2
0.46
(0.018)
PIN DIA.
2.0
(0.08)
NOTE: ALL DIMENSIONS IN MILLIMETRES AND (INCHES).
6
Mechanical Dimensions
HFBR-0400 ST Series, continued
HFBR-X41X Duplex
NOTE 2
TX
RX
25.4
(1.00)
12.70
(0.50)
27.2
(1.07)
8.4
(0.33)
6.35
(0.25)
12.7
(0.50)
10.2
(0.40)
3.6
(0.14)
5.1
(0.20)
3.81
(0.15)
1.27
(0.05)
2.54
(0.10)
2.54
(0.10)
PINS 1,4,5,8
0.51 X 0.38
(0.020 X 0.015)
NOTES:
1. DIMENSIONS: MILLIMETERS (INCHES)
TOLERANCE: .X ± 0.51 mm (.XX ± 0.02 IN.)
.XX ± 0.13 mm (.XXX ± 0.005 IN.)
PINS 2,3,6,7
2. REFER TP PRODUCT(S) FOR MARKING.
0.46
DIA.
3. 8 LEADS PRESENT MUST BE INSERTABLE INTO
(0.018)
0.040 DIA. HOLES ON 0.100 ROW & CENTER TO CENTER
SPACES (USE FIXTURE 10176A FOR PRODUCTION, 10176B
FOR QOA, OR EQUIVALENT).
PIN NO. 1
INDICATOR
7
5.1
(0.20)
Mechanical Dimensions
HFBR-0400T Threaded
ST Series
12.7
(0.50)
8.4
(0.33)
HFBR-X41XT
27.2
(1.07)
7.6
(0.30)
6.35
(0.25)
12.7
(0.50)
7.1
(0.28)
10.2
(0.40)
DIA.
3.6
(0.14)
5.1
(0.20)
3/8 - 32 UNEF - 2A
3.81
1.27
(0.05)
(0.15)
2.54
(0.10)
DIA.
PINS 1,4,5,8
0.51 X 0.38
(0.020 X 0.015)
2.54
(0.10)
PINS 2,3,6,7
0.46
(0.018)
DIA.
PIN NO. 1
INDICATOR
5.1
(0.20)
HFBR-X44XT
18.5
(0.73)
PART MARKING
4.9
TYP.
(0.19)
8.4
(0.33)
2.5 DIA. PIN
(0.10) CIRCLE
7.1
(0.28)
DIA.
7.6
(0.30)
ACROSS THREAD
FLATS
2.4
TYP.
(0.09)
8.6
(0.34)
DIA.
7.1
(0.28)
1
4
2
3
3/8 - 32 UNEF - 2A
THREAD
3.6
MIN.
(0.14)
2.5
(0.10)
TYP.
2.0
(0.08)
NOTE 2
3.0
(0.12)
TYP.
2.5
4.1
(0.16)
TYP.
(0.10)
5.1
(0.20)
HFBR-X46XT
18.5
(0.73)
8.4
(0.33)
PART MARKING
13.2
(0.52)
2.5 DIA. PIN
(0.10) CIRCLE
7.6
(0.30)
ACROSS THREAD
FLATS
8.6
DIA.
(0.34)
7.1
(0.28)
1
4
2
3
9.1
(0.36)
3/8 - 32 UNEF - 2A
THREAD
NOTE 2
2.0
(0.08)
0.46
(0.018)
4.1
(0.16)
NOTE: ALL DIMENSIONS IN MILLIMETRES AND (INCHES).
8
Mechanical Dimensions
HFBR-0400T Threaded ST Series, continued
HFBR-X41XT Duplex
5.1
(0.20)
NOTE 2
25.4
(1.00)
12.70
(0.50)
27.2
(1.07)
8.4
(0.33)
6.35
(0.25)
7.6
(0.30)
12.7
(0.50)
7.1
(0.28)
10.2
(0.40)
3.60
(0.14)
5.1
(0.20)
3/8 - 32 UNEF - 2A
3.81
1.27
(0.05)
(0.15)
2.54
(0.10)
2.54
(0.10)
PINS 1,4,5,8
0.51 X 0.38
(0.020 X 0.015)
NOTES:
1. DIMENSIONS: MILLIMETERS (INCHES)
TOLERANCE: .X ± 0.51 mm (.XX ± 0.02 IN.)
.XX ± 0.13 mm (.XXX ± 0.005 IN.)
PINS 2,3,6,7
2. REFER TP PRODUCT(S) FOR MARKING.
0.46
DIA.
3. 14XXT PRODUCT TO HAVE LIGHT GRAY PORT.
24XXT PRODUCT TO HAVE DARK GRAY PORT.
(0.018)
24XXTC PRODUCT TO HAVE BLACK CONDUCTIVE PORT.
4. 8 LEADS PRESENT MUST BE INSERTABLE INTO
0.040 DIA. HOLES ON 0.100 ROW & CENTER TO CENTER
SPACES (USE FIXTURE 10176A FOR PRODUCTION, 10176B
FOR QOA, OR EQUIVALENT).
PIN NO. 1
INDICATOR
9
Mechanical Dimensions
HFBR-0400 FC Series
M8 x 0.75 6G
THREAD (METRIC)
12.7
(0.50)
19.6
(0.77)
12.7
(0.50)
7.9
(0.31)
10.2
(0.40)
3.6
(0.14)
5.1
(0.20)
3.81
(0.15)
2.5
(0.10)
2.5
(0.10)
PIN NO. 1
INDICATOR
Mechanical Dimensions
HFBR-0400 SC Series
HFBR-X4EX
28.65
(1.128)
6.35
(0.25)
12.7
(0.50)
10.38
(0.409)
10.0
(0.394)
3.60
(0.140)
5.1
(0.200)
15.95
(0.628)
3.81
(0.15)
1.27
(0.050)
2.54
(0.10)
2.54
(0.100)
12.7
(0.500)
10
Mechanical Dimensions
HFBR-0400 SC Series, continued
HFBR-X4EX Duplex
RX
TX
25.4
(1.00)
28.65
(1.128)
12.70
(0.500)
6.35
(0.250)
12.7
(0.50)
10.38
(0.409)
10.0
(0.394)
3.60
(0.140)
5.1
(0.200)
15.95
(0.628)
3.81
(0.15)
2.54
1.27
(0.050)
2.54
(0.100)
(0.10)
PINS 1,4,5,8
0.51 X 0.38
(0.020 X 0.015)
NOTES:
1. DIMENSIONS: MILLIMETERS (INCHES)
TOLERANCE: .X ± 0.50 mm (.XX ± 0.02 IN.)
.XX ± 0.13 mm (.XXX ± 0.005 IN.)
2. MARKING SPECIFIED BY THE PRODUCT(S).
PINS 2,3,6,7
3. 8 LEADS PRESENT MUST BE INSERTABLE INTO 0.040 DIA.
HOLES ON 0.100 ROW & CENTER TO CENTER SPACES.
0.46
(0.018)
DIA.
PIN NO. 1
INDICATOR
11
LED OR DETECTOR IC
LENS–SPHERE
(ON TRANSMITTERS ONLY)
HOUSING
LENS–WINDOW
CONNECTOR PORT
HEADER
EPOXY BACKFILL
PORT GROUNDING PATH INSERT
Figure 1. HFBR-0400 ST Series Cross-Sectional View.
Panel Mount Hardware
HFBR-4401: for SMA Ports
HFBR-4411: for ST Ports
1/4 - 36 UNEF -
2B THREAD
3/8 - 32 UNEF -
2B THREAD
PART
NUMBER
0.2 IN.
DATE CODE
7.87
DIA.
12.70
DIA.
(0.310)
(0.50)
1.65
1.65
(0.065)
(0.065)
3/8 - 32 UNEF -
2A THREADING
HEX-NUT
HEX-NUT
1 THREAD
AVAILABLE
7.87 TYP.
(0.310) DIA.
14.27 TYP.
(0.563) DIA.
WALL
NUT
6.61
DIA.
(0.260)
10.41 MAX.
(0.410) DIA.
0.14
(0.005)
0.46
(0.018)
WASHER
WASHER
WASHER
(Each HFBR-4401 and HFBR-4411 kit consists of 100 nuts and 100 washers.)
Port Cap Hardware
HFBR-4402: 500 SMA Port Caps
HFBR-4120: 500 ST Port Plugs (120 psi)
HFBR-4412: 500 FC Port Caps
HFBR-4417: 500 SC Port Plugs
12
Options
• Allows designer to separate the
signal and conductive port
grounds
• Recommended for use in noisy
environments
Options TA, TB, HA, HB
(Active Device Mount
Options)
(These options are unrelated to
the threaded port option T.)
• All metal, panel mountable
package with a 3 or 4 pin
receptacle end
• Available for HFBR-14X4, 24X2
and 24X6 components
In addition to the various port
styles available for the HFBR-
0400 series products, there are
also several extra options that
can be ordered. To order an
option, simply place the corre-
sponding option number at the
end of the part number. For
instance, a metal-port option SMA
receiver would be HFBR-2406M.
You can add any number of
options in series at the end of a
part number. Please contact your
local sales office for further
information or browse HP’s fiber
optics home page at http://
• Available on SMA and threaded
ST port style receivers only
Option M (Metal Port Option)
• Nickel plated aluminum con-
nector receptacle
• Designed to withstand electro-
static discharge (ESD) of 15kV
to the port
• Significantly reduces effect of
electromagnetic interference
(EMI) on receiver sensitivity
• Allows designer to separate the
signal and metal port grounds
• Recommended for use in very
noisy environments
• Available on SMA, FC, ST, and
threaded ST ports
• Choose from diamond or
square pinout, straight or bent
leads ADM Picture
www.hp.com/go/fiber
• TA = Square pinout/straight
leads
TB = Square pinout/bent leads
HA = Diamond pinout/straight
leads
Option T (Threaded Port
Option)
• Allows ST style port com-
ponents to be panel mounted.
• Compatible with all current
makes of ST multimode
connectors
• Mechanical dimensions are
compliant with MIL-STD-
83522/13
• Maximum wall thickness when
using nuts and washers from
the HFBR-4411 hardware kit is
2.8 mm (0.11 inch)
HB = Diamond pinout/bent
leads
Option K (Kinked Lead
Option)
• Grounded outside 4 leads are
“kinked”
• Allows components to stay
anchored in the PCB during
wave solder and aqueous wash
processes
Duplex Option
In addition to the standard
options, some HFBR-0400 series
products come in a duplex con-
figuration with the transmitter on
the left and the receiver on the
right. This option was designed
for ergonomic and efficient
manufacturing. The following
part numbers are available in the
duplex option:
• Available on all ST ports
Option C (Conductive Port
Receiver Option)
• Designed to withstand electro-
static discharge (ESD) of 25kV
to the port
• Significantly reduces effect of
electromagnetic interference
(EMI) on receiver sensitivity
HFBR-5414 (Duplex ST)
HFBR-5414T (Duplex Threaded
ST)
HFBR-54E4 (Duplex SC)
4
5
3
2
6
7
1
8
4
5
3
2
6
7
1
8
13
Typical Link Data
HFBR-0400 Series
Description
corresponds to transceiver solu-
tions combining the HFBR-0400
series components and various
recommended transceiver design
circuits using off-the-shelf
example of typical link perform-
ance for a given design and does
not call out any link limitations.
Please refer to the appropriate
application note given for each
link to obtain more information.
The following technical data is
taken from 4 popular links using
the HFBR-0400 series: the 5 MBd
link, Ethernet 20 MBd link,
Token Ring 32 MBd link, and the
155 MBd link. The data given
electrical components. This data
is meant to be regarded as an
5 MBd Link (HFBR-14XX/24X2)
Link Performance -40°C to +85°C unless otherwise specified
Parameter
Symbol Min. Typ. Max. Units
Conditions
Reference
Optical Power Budget
with 50/125 µm fiber
Optical Power Budget
with 62.5/125 µm fiber
Optical Power Budget
with 100/140 µm fiber
Optical Power Budget
with 200 µm fiber
OPB
OPB
OPB
OPB
4.2
8.0
8.0
12
9.6
15
15
20
dB
dB
dB
dB
HFBR-14X4/24X2
NA = 0.2
HFBR-14X4/24X2
NA = 0.27
HFBR-14X2/24X2
NA = 0.30
HFBR-14X2/24X2
NA = 0.37
Note 1
50
Note 1
Note 1
Note 1
Note 2
62.5
100
200
Date Rate Synchronous
Asynchronous
dc
dc
5
2.5
MBd
MBd
Note 3,
Fig. 7
Propagation Delay
LOW to HIGH
Propagation Delay
HIGH to LOW
System Pulse Width
Distortion
Bit Error Rate
t
72
46
26
ns
ns
ns
T = 25°C,
P = -21 dBm Peak
R
Figs. 6, 7, 8
PLH
A
t
PHL
t
-t
Fiber cable
length = 1 m
Data Rate <5 Bd
PLH PHL
-9
BER
10
P > -24 dBm Peak
R
Notes:
1. OPB at T = -40 to 85°C, V = 5.0 V dc, I
= 60 mA. P = -24 dBm peak.
A
CC
F ON
R
2. Synchronous data rate limit is based on these assumptions: a) 50% duty factor modulation, e.g., Manchester I or BiPhase
Manchester II; b) continuous data; c) PLL Phase Lock Loop demodulation; d) TTL threshold.
3. Asynchronous data rate limit is based on these assumptions: a) NRZ data; b) arbitrary timing-no duty factor restriction; c) TTL
threshold.
14
5 MBd Logic Link Design
The following example will illus-
trate the technique for selecting
The curves in Figures 3, 4, and 5
are constructed assuming no in-
line splice or any additional
system loss. Should the link
consists of any in-line splices,
these curves can still be used to
calculate link limits provided they
are shifted by the additional
system loss expressed in dB. For
example, Figure 3 indicates that
with 48 mA of transmitter drive
current, a 1.75 km link distance
is achievable with 62.5/125 µm
fiber which has a maximum
attenuation of 4 dB/km. With
2 dB of additional system loss, a
1.25 km link distance is still
achievable.
If resistor R in Figure 2 is
1
the appropriate value of I and R .
F
1
70.4 Ω, a forward current I of
F
48 mA is applied to the HFBR-
Maximum distance required
14X4 LED transmitter. With I =
F
= 400 meters. From Figure 3 the
drive current should be 15 mA.
From the transmitter data
48 mA the HFBR-14X4/24X2
logic link is guaranteed to work
with 62.5/125 µm fiber optic
cable over the entire range of 0
to 1750 meters at a data rate of
dc to 5 MBd, with arbitrary data
format and pulse width distortion
typically less than 25%. By
V = 1.5 V (max.) at I = 15 mA
F
F
as shown in Figure 9.
V
- V
5 V - 1.5 V
15 mA
CC
I
F
R = ––––––– = –––––––––
1
F
setting R = 115 Ω, the transmit-
1
R = 233 Ω
1
ter can be driven with I = 30 mA,
F
if it is desired to economize on
power or achieve lower pulse
distortion.
Figure 2. Typical Circuit Configuration.
15
0
60
50
-1
-2
-3
WORST CASE
-40°C, +85°C
UNDERDRIVE
TYPICAL 26°C 40
UNDERDRIVE
30
-4
CABLE ATTENUATION dB/km
α MAX (-40°C, +85°C)
α MIN (-40°C, +85°C)
α TYP (-40°C, +85°C)
4
1
2.8
20
-5
-6
0
0.4
0.8
1.2
1.6
2
LINK LENGTH (km)
Figure 3. HFBR-1414/HFBR-2412
Link Design Limits with 62.5/125 µm
Cable.
Figure 4. HFBR-14X2/HFBR-24X2
Link Design Limits with 100/140 µm
Cable.
Figure 5. HFBR-14X4/HFBR-24X2
Link Design Limits with 50/125 µm
Cable.
75
70
55
50
45
40
t
(TYP) @ 25°C
PLH
65
60
55
50
45
40
35
30
35
30
25
t
(TYP) @ 25°C
PHL
25
20
20
-22 -21 -20 -19 -18 -17 -16 -15 -14 -13 -12
-22 -21 -20 -19 -18 -17 -16 -15 -14 -13 -12
P
– RECEIVER POWER – dBm
P – RECEIVER POWER – dBm
R
R
Figure 6. Propagation Delay through
System with One Meter of Cable.
Figure 7. Typical Distortion of Pseudo
Random Data at 5 Mb/s.
Figure 8. System Propagation Delay Test Circuit and Waveform Timing Definitions.
16
Ethernet 20 MBd Link (HFBR-14X4/24X6)
(refer to Application Note 1038 for details)
Typical Link Performance
[1,2]
Parameter
Symbol
Typ.
Units
Conditions
Receiver Sensitivity
-34.4
dBm
20 MBd D2D2 Hexadecimal Data
average
2 km 62.5/125 µm fiber
Link Jitter
7.56
7.03
0.763
-15.2
ns pk-pk
ns pk-pk
ns pk-pk
ECL Out Receiver
TTL Out Receiver
20 MBd D2D2 Hexadecimal Data
20 MBd D2D2 Hexadecimal Data
Transmitter Jitter
Optical Power
P
T
dBm
average
Peak I
= 60 mA
F,ON
LED rise time
LED fall time
Mean difference
Bit Error Rate
Output Eye Opening
Data Format 50% Duty Factor
t
t
f
1.30
3.08
1.77
10
36.7
20
ns
ns
ns
1 MHz Square Wave Input
At AUI Receiver Output
r
|t -t |
r f
BER
-10
ns
MBd
Notes:
1. Typical data at T = 25°C, V = 5.0 V dc.
A
CC
2. Typical performance of circuits shown in Figure 1 and Figure 3 of AN-1038 (see applications support section).
Token Ring 32 MBd Link (HFBR-14X4/24X6)
(refer to Application Note 1065 for details)
Typical Link Performance
[1,2]
Parameter
Symbol
Typ.
Units
Conditions
Receiver Sensitivity
-34.1
dBm
32 MBd D2D2 Hexadecimal Data
average
2 km 62.5/125 µm fiber
Link Jitter
6.91
5.52
0.823
-12.2
-82.2
1.3
ns pk-pk
ns pk-pk
ns pk-pk
ECL Out Receiver
TTL Out Receiver
32 MBd D2D2 Hexadecimal Data
Transmitter Jitter
Optical Power Logic Level “0”
Optical Power Logic Level “1”
LED Rise Time
LED Fall Time
Mean Difference
P
dBm peak Transmitter TTL in I
= 60 mA,
T ON
F ON
I
= 1 mA
F OFF
P
T OFF
t
nsec
nsec
nsec
1 MHz Square Wave Input
r
t
f
3.08
1.77
|t -t |
r f
BER
-10
Bit Error Rate
10
Data Format 50% Duty Factor
32
MBd
Notes:
1. Typical data at T = 25°C, V = 5.0 V dc.
A
CC
2. Typical performance of circuits shown in Figure 1 and Figure 3 of AN-1065 (see applications support section)
17
155 MBd Link (HFBR-14X4/24X6)
(refer to Application Bulletin 78 for details)
Typical Link Performance
[1,2]
Parameter
Optical Power Budget
with 50/125 µm fiber
Optical Power Budget
with 62.5/125 µm fiber
Optical Power Budget
with 100/140 µm fiber
Optical Power Budget
with 200 µm HCSfFiber
Data Format 20% to
80% Duty Factor
System Pulse Width
Distortion
Bit Error Rate
Symbol
Typ.
7.9
Units Max. Units Conditions
Ref.
Note 2
OPB
13.9
17.7
17.7
22.0
dB NA = 0.2
dB NA = 0.27
dB NA = 0.30
dB NA = 0.35
50
OPB
11.7
11.7
16.0
1
62
OPB
OPB
100
200
175 MBd
ns
|t
- t
|
1
PR = -7 dBm Peak
PLH PHL
1 meter 62.5/125 µm fiber
Data Rate < 100 MBaud
PR >-31 dBm Peak
-9
BER
10
Note 2
Notes:
1. Typical data at T = 25°C, V = 5.0 V dc, PECL serial interface.
2. Typical OPB was determined at a probability of error (BER) of 10 . Lower probabilities of error can be achieved with short fibers
A
CC
-9
that have less optical loss.
18
HFBR-14X2/14X4 Low-
Cost High-Speed
Transmitters
fiber and typically can launch
-15.8 dBm optical power at
60 mA into 50/125 µm fiber and
-12 dBm into 62.5/125 µm fiber.
The HFBR-14X2 standard
transmitter typically can launch
-12 dBm of optical power at
60 mA into 100/140 µm fiber
cable. It is ideal for large size
fiber such as 100/140 µm. The
high launched optical power level
is useful for systems where star
couplers, taps, or inline connec-
tors create large fixed losses.
Housed Product
Description
The HFBR-14XX fiber optic
transmitter contains an 820 nm
AlGaAs emitter capable of
efficiently launching optical
power into four different optical
fiber sizes: 50/125 µm, 62.5/125
µm, 100/140 µm, and 200 µm
®
HCS . This allows the designer
flexibility in choosing the fiber
size. The HFBR-14XX is designed
to operate with the Hewlett-
Packard HFBR-24XX fiber optic
receivers.
Consistent coupling efficiency is
assured by the double-lens optical
system (Figure 1). Power coupled
into any of the three fiber types
varies less than 5 dB from part to
part at a given drive current and
temperature. Consistent coupling
efficiency reduces receiver
dynamic range requirements
which allows for longer link
lengths.
Unhoused Product
The HFBR-14XX transmitter’s
high coupling efficiency allows
the emitter to be driven at low
current levels resulting in low
power consumption and increased
reliability of the transmitter. The
HFBR-14X4 high power transmit-
ter is optimized for small size
Absolute Maximum Ratings
Parameter
Storage Temperature
Operating Temperature
Lead Soldering Cycle
Forward Input Current
Reverse Input Voltage
Symbol
Min.
-55
-40
Max.
Units
°C
°C
Reference
T
T
+85
+85
+260
10
200
100
1.8
S
A
Temp.
Time
Peak
dc
°C
sec
mA
mA
V
I
Note 1
FPK
I
Fdc
V
BR
19
Electrical/Optical Specifications -40°C to +85°C unless otherwise specified.
[2]
Parameter
Forward Voltage
Symbol Min. Typ.
Max. Units
Conditions
I = 60 mA dc
I = 100 mA dc
F
Reference
Figure 9
V
F
1.48
1.70
1.84
-0.22
-0.18
3.8
2.09
V
F
Forward Voltage
Temperature Coefficient
∆V /∆T
mV/°C I = 60 mA dc
Figure 9
F
F
I = 100 mA dc
F
Reverse Input Voltage
Peak Emission Wavelength
Diode Capacitance
V
BR
1.8
V
I = 100 µA dc
F
λ
792
820
55
865
nm
pF
P
C
T
V = 0, f = 1 MHz
Optical Power Temperature
Coefficient
∆P /∆T
-0.006
-0.010
260
dB/°C I = 60 mA dc
I = 100 mA dc
°C/W
T
Thermal Resistance
θ
Notes 3, 8
JA
14X2 Numerical Aperture
14X4 Numerical Aperture
14X2 Optical Port Diameter
14X4 Optical Port Diameter
NA
NA
D
0.49
0.31
290
µm
µm
Note 4
Note 4
D
150
HFBR-14X2 Output Power Measured Out of 1 Meter of Cable
[2]
Parameter Symbol Min. Typ.
Max.
-16.8
-15.8
-14.4
-13.8
-14.0
-13.0
-11.6
-11.0
-10.0
-9.0
Unit
Conditions
Reference
Notes 5, 6, 9
50/125 µm
Fiber Cable
NA = 0.2
P
-21.8
-22.8
-20.3
-21.9
-19.0
-20.0
-17.5
-19.1
-15.0
16.0
-18.8
-16.8
-16.0
-14.0
-12.0
-10.0
-7.1
dBm T = 25°C I = 60 mA dc
peak
T50
A
F
T = 25°C I = 100 mA dc
A
F
62.5/125 µm
Fiber Cable
NA = 0.275
P
T62
dBm T = 25°C I = 60 mA dc
A F
peak
T = 25°C I = 100 mA dc
A
F
100/140 µm
Fiber Cable
NA = 0.3
P
P
dBm T = 25°C I = 60 mA dc
A F
peak
T100
-13.5
-15.1
-10.7
-11.7
-9.2
-7.6
-7.0
-4.7
-3.7
T = 25°C I = 100 mA dc
A F
200 µm HCS
Fiber Cable
NA = 0.37
dBm T = 25°C I = 60 mA dc
A F
peak
T200
-5.2
-2.3
T = 25°C I = 100 mA dc
A F
-10.8
-1.7
CAUTION: The small junction sizes inherent to the design of these components increase the components’
susceptibility to damage from electrostatic discharge (ESD). It is advised that normal static precautions be
taken in handling and assembly of these components to prevent damage and/or degradation which may be
induced by ESD.
20
HFBR-14X4 Output Power Measured out of 1 Meter of Cable
[2]
Parameter Symbol Min. Typ.
Max.
-13.8
-12.8
-11.4
-10.8
-10.0
-9.0
-7.6
-7.0
-4.5
-3.5
-2.1
-1.5
+0.8
+1.8
+3.2
+3.8
Unit
Conditions
Reference
Notes 5, 6, 9
50/125 µm
Fiber Cable
NA = 0.2
PT50
-18.8
-19.8
-17.3
-18.9
-15.0
-16.0
-13.5
-15.1
-9.5
-10.5
-8.0
-9.6
-5.2
-6.2
-15.8
-13.8
-12.0
-10.0
-6.5
dBm T = 25°C I = 60 mA dc
peak
A
F
T = 25°C I = 100 mA dc
A
F
62.5/125 µm
Fiber Cable
NA = 0.275
PT62
dBm T = 25°C I = 60 mA dc
A F
peak
T = 25°C I = 100 mA dc
A F
100/140 µm
Fiber Cable
NA = 0.3
PT100
PT200
dBm T = 25°C I = 60 mA dc
A F
peak
-4.5
T = 25°C I = 100 mA dc
A F
200 µm HCS
Fiber Cable
NA = 0.37
-3.7
dBm T = 25°C I = 60 mA dc
A F
peak
-3.7
-1.7
T = 25°C I = 100 mA dc
A F
-5.3
14X2/14X4 Dynamic Characteristics
[2]
Parameter
Rise Time, Fall Time
(10% to 90%)
Symbol
Min. Typ.
Max.
6.5
Units
nsec
No Pre-bias
Conditions Reference
t , t
4.0
I = 60 mA
F
Note 7,
r
f
Figure 12
Rise Time, Fall Time
(10% to 90%)
Pulse Width Distortion
t , t
3.0
0.5
nsec
I = 10 to
100 mA
Note 7,
Figure 11
Figure 11
r
f
F
PWD
nsec
Notes:
1. For I
> 100 mA, the time duration should not exceed 2 ns.
FPK
2. Typical data at T = 25°C.
A
3. Thermal resistance is measured with the transmitter coupled to a connector assembly and mounted on a printed circuit board.
4. D is measured at the plane of the fiber face and defines a diameter where the optical power density is within 10 dB of the
maximum.
®
5. P is measured with a large area detector at the end of 1 meter of mode stripped cable, with an ST precision ceramic ferrule (MIL-
T
STD-83522/13) for HFBR-1412/1414, and with an SMA 905 precision ceramic ferrule for HFBR-1402/1404.
6. When changing µW to dBm, the optical power is referenced to 1 mW (1000 µW). Optical Power P (dBm) = 10 log P (µW)/1000 µW.
7. Pre-bias is recommended if signal rate >10 MBd, see recommended drive circuit in Figure 11.
8. Pins 2, 6 and 7 are welded to the anode header connection to minimize the thermal resistance from junction to ambient. To further
reduce the thermal resistance, the anode trace should be made as large as is consistent with good RF circuit design.
9. Fiber NA is measured at the end of 2 meters of mode stripped fiber, using the far-field pattern. NA is defined as the sine of the half
angle,determined at 5% of the peak intensity point. When using other manufacturer’s fiber cable, results will vary due to differing
NA values and specification methods.
All HFBR-14XX LED transmitters are classified as IEC 825-1 Accessible Emission Limit (AEL)
Class 1 based upon the current proposed draft scheduled to go in to effect on January 1, 1997.
AEL Class 1 LED devices are considered eye safe. Contact your Hewlett-Packard sales
representative for more information.
CAUTION: The small junction sizes inherent to the design of these components increase the components’
susceptibility to damage from electrostatic discharge (ESD). It is advised that normal static precautions be
taken in handling and assembly of these components to prevent damage and/or degradation which may be
induced by ESD.
21
Recommended Drive
Circuits
The circuit used to supply current
to the LED transmitter can
significantly influence the optical
switching characteristics of the
LED. The optical rise/fall times
and propagation delays can be
improved by using the appro-
priate circuit techniques. The
LED drive circuit shown in
Figure 11 uses frequency com-
pensation to reduce the typical
rise/fall times of the LED and a
small pre-bias voltage to minimize
propagation delay differences
that cause pulse-width distortion.
The circuit will typically produce
rise/fall times of 3 ns, and a total
jitter including pulse-width dis-
tortion of less than 1 ns. This
circuit is recommended for appli-
cations requiring low edge jitter
or high-speed data transmission
at signal rates of up to 155 MBd.
Component values for this circuit
can be calculated for different
LED drive currents using the
equations shown below. For
additional details about LED
drive circuits, the reader is
encouraged to read Hewlett-
Packard Application Bulletin 78
and Application Note 1038.
(V - V ) + 3.97 (V - V - 1.6 V)
(5 - 1.84) + 3.97 (5 - 1.84 - 1.6)
R = –––––––––––––––––––––––––––––
CC
F
CC
F
R = –––––––––––––––––––––––––––––––
y
y
I
(A)
0.100
F ON
1
R
3.16 + 6.19
y
R
= – ––––
R = ––––––––––– = 93.5 Ω
X1
y
)
(
2
3.97
0.100
1
2
93.5
3.97
R
R
(Ω) = R - 1
R
= – –––– = 11.8 Ω
EQ2
X1
X1
)
(
= R = R = 3(R
)
EQ2
R
R
= 11.8 - 1 = 10.8 Ω
X2
X3
X4
EQ2
2000(ps)
C(pF) = ––––––––
= R = R = 3(10.8) = 32.4 Ω
X2
X3
X4
R (Ω)
X1
2000 ps
11.8 Ω
Example for I
obtained from Figure 9 (= 1.84 V).
= 100 mA: V can be
C = ––––––– = 169 pF
F ON
F
22
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
3.0
2.0
1.4
1.0
0.8
0
-1.0
-2.0
-3.0
-4.0
-5.0
-7.0
0
10 20 30 40 50 60 70 80 90 100
– FORWARD CURRENT – mA
I
F
Figure 9. Forward Voltage and
Current Characteristics.
Figure 10. Normalized Transmitter
Output vs. Forward Current.
Figure 11. Recommended Drive Circuit.
Figure 12. Test Circuit for Measuring t , t .
r
f
23
HFBR-24X2 Low-Cost
5 MBd Receiver
Description
Housed Product
designed for direct interfacing to
popular logic families. The
absence of an internal pull-up
resistor allows the open-collector
output to be used with logic
The HFBR-24X2 fiber optic
receiver is designed to operate
with the Hewlett-Packard HFBR-
14XX fiber optic transmitter and
50/125 µm, 62.5/125 µm, 100/
families such as CMOS requiring
voltage excursions much higher
than V .
CC
®
140 µm, and 200 µm HCS fiber
Both the open-collector “Data”
optic cable. Consistent coupling
into the receiver is assured by the
lensed optical system (Figure 1).
Response does not vary with fiber
size ≤ 0.100 µm.
output Pin 6 and V Pin 2 are
CC
referenced to “Com” Pin 3, 7. The
“Data” output allows busing,
strobing and wired “OR” circuit
configurations. The transmitter is
designed to operate from a single
+5 V supply. It is essential that a
bypass capacitor (0.1 µF
The HFBR-24X2 receiver incor-
porates an integrated photo IC
containing a photodetector and
dc amplifier driving an open-
collector Schottky output
ceramic) be connected from
Pin 2 (V ) to Pin 3 (circuit
CC
common) of the receiver.
transistor. The HFBR-24X2 is
Unhoused Product
PIN FUNCTION
1
2
3
4
V
(5 V)
CC
COMMON
DATA
COMMON
Absolute Maximum Ratings
Parameter
Storage Temperature
Operating Temperature
Symbol
Min.
-55
-40
Max.
+85
+85
+260
10
7.0
25
18.0
40
5
Units
°C
°C
°C
sec
V
mA
V
mW
Reference
T
S
T
A
Lead Soldering Cycle
Temp.
Time
Note 1
Supply Voltage
Output Current
Output Voltage
Output Collector Power Dissipation
Fan Out (TTL)
V
-0.5
-0.5
CC
I
O
V
O
P
O AV
N
Note 2
24
Electrical/Optical Characteristics -40°C to + 85°C unless otherwise specified
Fiber sizes with core diameter ≤ 100 µm and NA ≤ 0.35, 4.75 V ≤ V ≤ 5.25 V
CC
[3]
Parameter
High Level Output Current
Symbol Min. Typ.
Max. Units
Conditions
V = 18
Reference
I
5
250
0.5
6.3
10
µA
OH
O
P < -40 dBm
R
Low Level Output Voltage
High Level Supply Current
Low Level Supply Current
V
OL
0.4
3.5
6.2
V
I = 8 mA
O
P > -24 dBm
R
I
mA
mA
V
CC
= 5.25 V
CCH
P < -40 dBm
R
I
V
CC
= 5.25 V
CCL
P > -24 dBm
R
Equivalent N.A.
Optical Port Diameter
NA
D
0.50
400
µm
Note 4
Dynamic Characteristics
-40°C to +85°C unless otherwise specified; 4.75 V ≤ V ≤ 5.25 V; BER ≤ 10
-9
CC
[3]
Parameter
Peak Optical Input Power
Logic Level HIGH
Symbol Min. Typ.
Max.
-40
0.1
-9.2
120
Units
dBm pk
µW pk
dBm pk
µW pk
Conditions
λ = 820 nm
P
Reference
Note 5
P
RH
Peak Optical Input Power
Logic Level LOW
P
-25.4
2.9
T = +25°C,
Note 5
Note 6
RL
A
I
= 8 mA
OL
-24.0
4.0
-10.0 dBm pk
100
I
OL
= 8 mA
µW pk
ns
Propagation Delay LOW
to HIGH
Propagation Delay HIGH
to LOW
t
t
65
49
T = 25°C,
A
PLHR
PHLR
P = -21 dBm,
R
Data Rate =
5 MBd
ns
Notes:
1. 2.0 mm from where leads enter case.
2. 8 mA load (5 x 1.6 mA), R = 560 Ω.
L
3. Typical data at T = 25°C, V = 5.0 Vdc.
A
CC
4. D is the effective diameter of the detector image on the plane of the fiber face. The numerical value is the product of the actual
detector diameter and the lens magnification.
5. Measured at the end of 100/140 µm fiber optic cable with large area detector.
6. Propagation delay through the system is the result of several sequentially-occurring phenomena. Consequently it is a combination
of data-rate-limiting effects and of transmission-time effects. Because of this, the data-rate limit of the system must be described in
terms of time differentials between delays imposed on falling and rising edges.
7. As the cable length is increased, the propagation delays increase at 5 ns per meter of length. Data rate, as limited by pulse width
distortion, is not affected by increasing cable length if the optical power level at the receiver is maintained.
CAUTION: The small junction sizes inherent to the design of these components increase the components’
susceptibility to damage from electrostatic discharge (ESD). It is advised that normal static precautions be
taken in handling and assembly of these components to prevent damage and/or degradation which may be
induced by ESD.
25
HFBR-24X6 Low-Cost
125 MHz Receiver
Description
integrated circuit. The HFBR-24X6
receives an optical signal and
converts it to an analog voltage.
The output is a buffered emitter-
follower. Because the signal
receiver from noisy host systems.
Refer to AN 1038, 1065, or AB 78
for details.
The HFBR-24X6 fiber optic
receiver is designed to operate
with the Hewlett-Packard HFBR-
14XX fiber optic transmitters and
50/125 µm, 62.5/125 µm, 100/
amplitude from the HFBR-24X6
receiver is much larger than from a
simple PIN photodiode, it is less
susceptible to EMI, especially at
high signaling rates. For very noisy
environments, the conductive or
metal port option is recommended.
A receiver dynamic range of 23 dB
over temperature is achievable
Housed Product
6
V
CC
ANALOG
SIGNAL
2
®
140 µm and 200 µm HCS fiber
3 & 7
optic cable. Consistent coupling
into the receiver is assured by the
lensed optical system (Figure 1).
Response does not vary with fiber
size for core diameters of 100 µm
or less.
V
EE
4
3
2
1
5
6
7
8
-9
(assuming 10 BER).
BOTTOM VIEW
PIN NO. 1
INDICATOR
The frequency response is typically
dc to 125 MHz. Although the
HFBR-24X6 is an analog receiver,
it is compatible with digital
The receiver output is an analog
signal which allows follow-on
circuitry to be optimized for a
variety of distance/data rate
requirements. Low-cost external
components can be used to convert
the analog output to logic
PIN FUNCTION
1†
2
N.C.
SIGNAL
3*
4†
5†
6
7*
8†
V
N.C.
N.C.
V
V
N.C.
EE
systems. Please refer to
CC
EE
Application Bulletin 78 for simple
and inexpensive circuits that
operate at 155 MBd or higher.
compatible signal levels for various
data formats and data rates up to
175 MBd. This distance/data rate
tradeoff results in increased optical
power budget at lower data rates
which can be used for additional
distance or splices.
* PINS 3 AND 7 ARE ELECTRICALLY
CONNECTED TO THE HEADER.
The recommended ac coupled
receiver circuit is shown in Figure
12. It is essential that a 10 ohm
resistor be connected between pin
6 and the power supply, and a 0.1
µF ceramic bypass capacitor be
connected between the power
supply and ground. In addition, pin
6 should be filtered to protect the
† PINS 1, 4, 5, AND 8 ARE ISOLATED FROM
THE INTERNAL CIRCUITRY, BUT ARE
ELECTRICALLY CONNECTED TO EACH OTHER.
Unhoused Product
PIN FUNCTION
The HFBR-24X6 receiver contains
a PIN photodiode and low noise
transimpedance pre-amplifier
1
2*
3
SIGNAL
V
V
V
EE
CC
EE
4*
6
POSITIVE
SUPPLY
BIAS & FILTER
CIRCUITS
V
CC
300 pF
2
ANALOG
SIGNAL
V
OUT
5.0
mA
3, 7
NEGATIVE
SUPPLY
V
EE
Figure 11. Simplified Schematic Diagram.
CAUTION: The small junction sizes inherent to the design of these components increase the components’
susceptibility to damage from electrostatic discharge (ESD). It is advised that normal static precautions be
taken in handling and assembly of these components to prevent damage and/or degradation which may be
induced by ESD.
26
Absolute Maximum Ratings
Parameter
Storage Temperature
Operating Temperature
Symbol
Min.
-55
-40
Max.
+85
+85
+260
10
Units
°C
°C
°C
s
Reference
T
S
T
A
Lead Soldering Cycle
Temp.
Time
Note 1
Supply Voltage
Output Current
Signal Pin Voltage
V
I
V
SIG
-0.5
-0.5
6.0
25
V
CC
V
mA
V
CC
O
Electrical/Optical Characteristics -40°C to +85°C; 4.75 V ≤ Supply Voltage ≤ 5.25 V,
= 511 Ω, Fiber sizes with core diameter ≤ 100 µm, and N.A. ≤ -0.35 unless otherwise specified
R
LOAD
[2]
Parameter
Symbol Min. Typ.
Max. Units
Conditions
Reference
Responsivity
R
5.3
7
9.6 mV/µW T = 25°C
@ 820 nm, 50 MHz
11.5 mV/µW @ 820 nm, 50 MHz
Note 3, 4
Figure 16
P
A
4.5
RMS Output Noise
Voltage
V
NO
0.40
0.59
mV
Bandwidth Filtered
@ 75 MHz
Note 5
P = 0 µW
R
0.70
mV
Unfiltered Bandwidth Figure 13
P = 0 µW
R
Equivalent Input
Optical Noise Power
(RMS)
P
N
Bandwidth Filtered
@ 75 MHz
-41.4
0.065
-43.0
0.050
dBm
µW
Optical Input Power
(Overdrive)
P
R
-7.6 dBm pk T = 25°C
Figure 14
Note 6
A
175
µW pk
-8.2 dBm pk
150
µW pk
Output Impedance
Z
30
Ω
Test Frequency =
50 MHz
o
dc Output Voltage
Power Supply Current
Equivalent N.A.
V
I
NA
-4.2
-3.1
9
0.35
324
-2.4
15
V
mA
P = 0 µW
R
o dc
R
= 510 Ω
LOAD
EE
Equivalent Diameter
D
µm
Note 7
CAUTION: The small junction sizes inherent to the design of these components increase the components’
susceptibility to damage from electrostatic discharge (ESD). It is advised that normal static precautions be
taken in handling and assembly of these components to prevent damage and/or degradation which may be
induced by ESD.
27
Dynamic Characteristics -40°C to +85°C; 4.75 V ≤ Supply Voltage ≤ 5.25 V; R
= 511 Ω, C
LOAD
LOAD
= 5 pF unless otherwise specified
[2]
Parameter
Symbol Min. Typ.
Max. Units
Conditions
Reference
Rise/Fall Time
10% to 90%
Pulse Width Distortion
t , t
3.3
0.4
2
6.3
ns
ns
%
P = 100 µW peak Figure 15
r
f
R
PWD
2.5
P = 150 µW peak
R
Note 8,
Figure 14
Overshoot
P = 5 µW peak,
R
Note 9
t = 1.5 ns
r
Bandwidth (Electrical)
BW
125
MHz
-3 dB Electrical
Bandwidth - Rise
Time Product
0.41
Hz • s
Note 10
Notes:
1. 2.0 mm from where leads enter case.
2. Typical specifications are for operation at T = 25°C and V = +5 V dc.
A
CC
3. For 200 µm HCS fibers, typical responsivity will be 6 mV/µW. Other parameters will change as well.
4. Pin #2 should be ac coupled to a load ≥ 510 ohm. Load capacitance must be less than 5 pF.
5. Measured with a 3 pole Bessel filter with a 75 MHz, -3 dB bandwidth. Recommended receiver filters for various bandwidths are
provided in Application Bulletin 78.
6. Overdrive is defined at PWD = 2.5 ns.
7. D is the effective diameter of the detector image on the plane of the fiber face. The numerical value is the product of the actual
detector diameter and the lens magnification.
8. Measured with a 10 ns pulse width, 50% duty cycle, at the 50% amplitude point of the waveform.
9. Percent overshoot is defined as:
V
- V
PK
100%
––––––––––
x 100%
(
V
)
100%
10. The conversion factor for the rise time to bandwidth is 0.41 since the HFBR-24X6 has a second order bandwidth limiting
characteristic.
0.1 µF
+5 V
10 Ω
6
30 pF
2
POST
AMP
LOGIC
OUTPUT
3 & 7
R
LOADS
500 Ω MIN.
Figure 12. Recommended ac Coupled Receiver Circuit. (See AB 78 and AN 1038 for more information.)
CAUTION: The small junction sizes inherent to the design of these components increase the components’
susceptibility to damage from electrostatic discharge (ESD). It is advised that normal static precautions be
taken in handling and assembly of these components to prevent damage and/or degradation which may be
induced by ESD.
28
150
3.0
6.0
5.0
4.0
125
100
2.5
2.0
t
t
f
75
50
1.5
1.0
3.0
2.0
1.0
r
25
0
0.5
0
60
TEMPERATURE – °C
80 100
0
10
P
20
30
40
50
60
70 80
-60 -40 -20
0
20
40
0
50
100
150
200
250
300
FREQUENCY – MH
– INPUT OPTICAL POWER – µW
Z
R
Figure 13. Typical Spectral Noise
Distortion vs. Peak Input Power.
Figure 14. Typical Pulse Width
Density vs. Frequency.
Figure 15. Typical Rise and Fall
Times vs. Temperature.
1.25
1.00
0.75
0.50
0.25
0
400 480 560 640 720 800 880 960 1040
λ – WAVELENGTH – nm
Figure 16. Receiver Spectral
Response Normalized to 820 nm.
www.hp.com/go/fiber
For technical assistance or the location of
your nearest Hewlett-Packard sales office,
distributor or representative call:
Americas/Canada: 1-800-235-0312 or
408-654-8675
Far East/Australasia: Call your local HP
sales office.
Japan: (81 3) 3335-8152
Europe: Call your local HP sales office.
Data subject to change.
Copyright © 1999 Hewlett-Packard Co.
Obsoletes 5965-1655E (1/97)
5968-6320E (6/99)
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