HFBR-2426C [HP]
Components is Designed to Provide cost effective, High performance fiber optic communication links; 组件旨在提供高性价比,高性能光纤通信链路型号: | HFBR-2426C |
厂家: | HEWLETT-PACKARD |
描述: | Components is Designed to Provide cost effective, High performance fiber optic communication links |
文件: | 总25页 (文件大小:286K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
Agilent HFBR-0400, HFBR-14xx and
HFBR-24xx Series Low Cost, Miniature
Fiber Optic Components with ST®,
SMA, SC and FC Ports
Data Sheet
Features
• Meets IEEE 802.3 Ethernet and
802.5 Token Ring Standards
• Meets TIA/EIA-785 100Base-SX
standard
• Low Cost Transmitters and
Receivers
Description
The HFBR-0400 Series of
components is designed to
provide cost effective, high
performance fiber optic
communication links for
information systems and
industrial applications with link
distances of up to 2.7
• Choice of ST®, SMA, SC or FC
Ports
• 820 nm Wavelength Technology
• Signal Rates up to 160 MBd
• Link Distances up to 2.7 km
• Specified with 50/125 µm, 62.5/
125 µm, 100/140 µm, and 200 µm
HCS® Fiber
kilometers. With the HFBR-24x6,
the 125 MHz analog receiver,
data rates of up to 160
megabaud are attainable.
• Repeatable ST Connections within
Applications
• 100Base-SX Fast Ethernet on 850
nm
0.2 dB Typical
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.
• Unique Optical Port Design for
Efficient Coupling
• Auto-Insertable and Wave
Solderable
• No Board Mounting Hardware
Required
• Wide Operating Temperature
Range -40 °C to +85 °C
• AlGaAs Emitters 100% Burn-In
Ensures High Reliability
• Conductive Port Option
• Media/fiber conversion, switches,
routers, hubs and NICs on
100Base-SX
• Local Area Networks
• Computer to Peripheral Links
• Computer Monitor Links
• Digital Cross Connect Links
• Central Office Switch/PBX Links
• Video Links
The HFBR-14x4 high power
transmitter and HFBR-24x6 125
MHz receiver pair up to provide
a duplex solution optimized for
100 Base-SX. 100Base-SX is a
Fast Ethernet Standard (100
Mbps) at 850 nm on multimode
fiber.
• Modems and Multiplexers
• Suitable for Tempest Systems
• Industrial Control Links
Complete evaluation kits are
available for ST product
offerings; including transmitter,
receiver, connectored cable, and
technical literature. In addition,
ST connectored cables are
available for evaluation.
ST® is a registered trademark of AT&T.
HCS® is a registered trademark of the SpecTran Corporation.
HFBR-0400 Series Part Number Guide
HFBR-x4xxaa
1
2
Transmitter
Receiver
T
Threaded port option
C
Conductive port receiver option
Metal port option
M
4
820 nm Transmitter and Receiver
products
2
4
2
5
6
TX, stadnard power
TX, high power
0
1
2
E
SMA, housed
ST, housed
FC, housed
SC, housed
RX, 5 MBd, TTL output
TX, high light output power
RX, 125 MHz, Analog Output
Available Options
HFBR-1402
HFBR-1404
HFBR-1412
HFBR-1412T
HFBR-1414
HFBR-1414M
HFBR-1414T
HFBR-1424
HFBR-1412TM
HFBR-14E4
HFBR-2402
HFBR-2406
HFBR-2412TC
HFBR-2412T
HFBR-2422
HFBR-24E6
HFBR-2416T
HFBR-2416TC
HFBR-2416
HFBR-2416M
HFBR-2412
Link Selection Guide
Data rate (MBd) Distance (m)
Transmitter
HFBR-14x2
HFBR-14x4
HFBR-14x4
HFBR-14x4
HFBR-14x4
HFBR-14x4
HFBR-14x4
HFBR-14x4
Receiver
HFBR-24x2
HFBR-24x2
HFBR-24x6
HFBR-24x6
HFBR-24x6
HFBR-24x6
HFBR-24x6
HFBR-24x6
Fiber Size (µm)
200 HCS
Evaluation Kit
N/A
5
1500
2000
2700
2200
1400
700
5
62.5/125
HFBR-0410
HFBR-0414
HFBR-0414
HFBR-0414
HFBR-0416
HFBR-0416
HFBR-0416
20
32
55
125
155
160
62.5/125
62.5/125
62.5/125
62.5/125
600
62.5/125
500
62.5/125
For additional information on specific links see the following individual link descriptions. Distances measured over temperature range from 0 to +70 °C.
2
Applications Support Guide
Agilent offers a wide selection of Furthermore, Agilent’s
This section gives the designer
information necessary to use the
HFBR-0400 series components
to make a functional fiber optic
transceiver.
evaluation kits for hands-on
experience with fiber optic
application support group is
always ready to assist with any
products as well as a wide range design consideration.
of application notes complete
with circuit diagrams and board
layouts.
Application Literature
Title
Description
HFBR-0400 Series Reliability Data
Application Bulletin 78
Application Note 1038
Application Note 1065
Application Note 1073
Application Note 1086
Application Note 1121
Application Note 1122
Application Note 1123
Application Note 1137
Application Note 1383
Transmitter & Receiver Reliability Data
Low Cost Fiber Optic Links for Digital Applications up to 155 MBd
Complete Fiber Solutions for IEEE 802.3 FOIRL, 10Base-FB and 10Base-FL
Complete Solutions for IEEE 802.5J Fiberoptic Token Ring
HFBR-0219 Test Fixture for 1x9 Fiber Optic Transceivers
Optical Fiber Interconnections in Telecommunication Products
DC to 32 MBd Fiberoptic Solutions
2 to 70 MBd Fiberoptic Solutions
20 to 160 MBd Fiberoptic Solutions
Generic Printed Circuit Layout Rules
Cost Effective Fiber and Media Conversion for 100Base-SX
3
HFBR-0400 Series Evaluation Kits
Package and Handling Information
Recommended Chemicals for
Cleaning/Degreasing HFBR-0400
Products
HFBR-0410 ST Evaluation Kit
Package Information
Contains the following:
All HFBR-0400 Series
transmitters and receivers are
housed in a low-cost, dual-inline Aliphatics: hexane, heptane,
package that is made of high
strength, heat resistant,
chemically resistant, and UL
94V-O 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
Alcohols: methyl, isopropyl,
isobutyl.
• One HFBR-1412 transmitter
• One HFBR-2412 five
megabaud TTL receiver
• Three meters of ST
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
connectored 62.5/125 µm
fiber optic cable with low cost
plastic ferrules.
• 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:
halogenated hydrocarbons
because of their potential
environmental harm.
applications.
• One HFBR-1414T transmitter
• One HFBR-2416T receiver
• Three meters of ST
Handling and Design Information
Each part comes with a
connectored 62.5/125 µm
fiber optic cable
protective port cap or plug
covering the optics. These caps/
plugs will vary by port style.
When soldering, it is advisable
to leave the protective cap on
the unit to keep the optics clean.
Good system performance
requires clean port optics and
cable ferrules to avoid
• Printed circuit board
• ML-4622 CP Data Quantizer
• 74ACTllOOON LED Driver
• LT1016CN8 Comparator
• 4.7 µH Inductor
• Related literature
HFBR-0400 SMA Evaluation Kit
Contains the following:
obstructing the optical path.
Clean compressed air often is
sufficient to remove particles of
dirt; methanol on a cotton swab
also works well.
• One HFBR-1402 transmitter
• One HFBR-2402 five
megabaud TTL receiver
• Two meters of SMA
connectored 1000 µm plastic
optical fiber
• Related literature
HFBR-0416 Evaluation Kit
Contains the following:
• One fully assembled 1x9
transceiver board for 155
MBd evaluation including:
- HFBR-1414 transmitter
- HFBR-2416 receiver
- circuitry
• Related literature
Ultem® is a registered Trademark of the GE corporation.
4
Mechanical Dimensions
SMA Port
HFBR-x40x
1/4 - 36 UNS 2A THREAD
12.7
(0.50)
22.2
(0.87)
6.35
(0.25)
12.7
(0.50)
6.4
(0.25)
10.2
(0.40)
3.6
(0.14)
DIA.
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
Mechanical Dimensions
ST Port
HFBR-x41x
12.7
(0.50)
8.2
(0.32)
27.2
(1.07)
6.35
(0.25)
12.7
(0.50)
7.0
(0.28)
10.2
(0.40)
3.6
(0.14)
DIA.
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
5
Mechanical Dimensions
Threaded ST Port
HFBR-x41xT
5.1
(0.20)
12.7
(0.50)
8.4
(0.33)
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
DIA.
(0.018)
PIN NO. 1
INDICATOR
Mechanical Dimensions
FC Port
HFBR-x42x
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
6
Mechanical Dimensions
SC Port
HFBR-x4Ex
28.65
(1.128)
6.35
12.7
(0.25)
(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)
7
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
PART
NUMBER
3/8 - 32 UNEF -
2B THREAD
0.2 IN.
DATE CODE
7.87
DIA.
12.70
DIA.
(0.310)
(0.50)
1.65
1.65
(0.065)
3/8 - 32 UNEF -
2A THREADING
(0.065)
HEX-NUT
HEX-NUT
1 THREAD
AVAILABLE
7.87 TYP.
(0.310) DIA.
14.27 TYP.
(0.563) DIA.
WALL
NUT
6.61
(0.260)
DIA.
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)
8
Options
Option M (Metal Port Option)
• Nickel plated aluminum
connector receptacle
• Designed to withstand
electrostatic discharge (ESD)
of 15 kV to the port
• Significantly reduces effect of
electromagnetic interference
(EMI) on receiver sensitivity
• Allows designer to separate
the signal and metal port
grounds
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
corresponding option number at
the end of the part number. See
page 2 for available options.
Option T (Threaded Port Option)
• Allows ST style port
components to be panel
mounted.
• Compatible with all current
makes of ST® multimode
connectors
• Recommended for use in very
noisy environments
• Available on SMA, ST, and
threaded ST ports
• 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)
• Available on all ST ports
Option C (Conductive Port Receiver
Option)
• Designed to withstand
electrostatic discharge (ESD)
of 25 kV to the port
• Significantly reduces effect of
electromagnetic interference
(EMI) on receiver sensitivity
• Allows designer to separate
the signal and conductive port
grounds
• Recommended for use in
noisy environments
• Available on SMA and
threaded ST port style
receivers only
9
Typical Link Data
HFBR-0400 Series
Description
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
corresponds to transceiver
solutions combining the HFBR-
0400 series components and
various recommended
transceiver design circuits using
off-the-shelf electrical
components. This data is meant
to be regarded as an example of
typical link performance 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.
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
OPB50
4.2
9.6
dB
HFBR-14x4/24x2
NA = 0.2
Note 1
Optical Power Budget
with 62.5/125 µm fiber
OPB62.5
OPB100
OPB200
15
15
20
dB
dB
dB
HFBR-14x4/24x2
NA = 0.27
Note 1
Note 1
Note 1
Note 2
8.0
Optical Power Budget
with 100/140 µm fiber
8.0
HFBR-14x2/24x2
NA = 0.30
Optical Power Budget
with 200 µm fiber
HFBR-14x2/24x2
NA = 0.37
12
Date Rate Synchronous
Asynchronous
dc
dc
5
MBd
MBd
2.5
Note 3,
Fig 7
Propagation Delay
LOW to HIGH
tPLH
72
46
26
ns
ns
ns
TA = +25 °C
PR = -21 dBm peak
Figs 6, 7, 8
Propagation Delay
HIGH to LOW
tPHL
System Pulse Width
Distortion
tPLH - tPHL
Fiber cable length = 1 m
Bit Error Rate
BER
10-9
Data rate <5 Bd
PR > -24 dBm peak
Notes:
1. OPB at T = -40 to +85 °C, V = 5.0 V dc, IF ON = 60 mA. P = -24 dBm peak.
A
CC
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.
10
5 MBd Logic Link Design
If resistor R1 in Figure 2 is 70.4
The following example will
illustrate the technique for
The curves in Figures 3, 4, and 5
are constructed assuming no
inline 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
W, a forward current I of 48 mA selecting the appropriate value
F
is applied to the HFBR-14x4
LED transmitter. With I = 48
of I and R .
F 1
F
Maximum distance required =
400 meters. From Figure 3 the
drive current should be 15 mA.
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
From the transmitter data V =
F
1.5 V (max.) at I = 15 mA as
F
shown in Figure 9.
R1 = VCC − VF = 5V −1.5V
distortion typically less than
IF
15 mA
25%. By setting R = 115 W, the
1
transmitter can be driven with
R1 = 233 Ω
I = 30 mA, if it is desired to
F
economize on power or achieve
lower pulse distortion.
distance is still achievable.
TTL DATA OUT
HFBR-24x2
RECEIVER
HFBR-14xx
TRANSMITTER
+5 V
SELECT R1 TO SET IF
IF
R1
2
2
6
7
3
VCC
T
R
RL
6
1 KΩ
0.1 µF
7 & 3
DATA IN
½ 75451
TRANSMISSION
DISTANCE =
NOTE:
IT IS ESSENTIAL THAT A BYPASS CAPACITOR (0.01 µF TO 0.1 µF
CERAMIC) BE CONNECTED FROM PIN 2 TO PIN 7 OF THE RECEIVER.
TOTAL LEAD LENGTH BETWEEN BOTH ENDS OF THE CAPACITOR
AND THE PINS SHOULD NOT EXCEED 20 MM.
Figure 2. Typical Circuit Configuration.
11
0
60
0
60
50
0
60
50
WORST CASE
-40 ˚C, +85 ˚C
UNDERDRIVE
50
40
30
-1
-2
-3
-1
-2
-3
-4
-5
OVERDRIVE
-1
-2
-3
-4
-5
WORST CASE
-40 ˚C, +85 ˚C
UNDERDRIVE
WORST CASE
-40˚C, +85˚C
UNDERDRIVE
40
30
40
30
OVERDRIVE
TYPICAL 26˚C
UNDERDRIVE
TYPICAL +25 ˚C
UNDERDRIVE
TYPICAL +25 ˚C
UNDERDRIVE
20
20
-6
-7
-8
-6
-7
-8
-4
CABLE ATTENUATION
α MAX (-40˚C, +85˚C)
α MIN (-40˚C, +85˚C)
α TYP (-40˚C, +85˚C)
dB/km
4
1
2.8
10
6
10
6
20
-5
-6
dB/km
CABLE ATTENUATION
dB/km
4
1.5
2.8
CABLE ATTENUATION
-9
-10
-11
-9
-10
-11
5.5
1.0
3.3
MAX (-40 ˚C, +85 ˚C)
MIN (-40 ˚C, +85 ˚C)
TYP (+25 ˚C)
MAX (-40 ˚C, +85 ˚C)
MIN (-40 ˚C, +85 ˚C)
TYP (+25 ˚C)
0
0.4
0.8
1.2
1.6
2
0
1
2
3
4
0
2
4
LINK LENGTH (km)
LINK LENGTH (km)
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.
55
50
45
40
75
70
t
t
(TYP) @ 25˚C
PLH
PHL
65
60
55
50
45
40
35
30
35
30
25
(TYP) @ 25˚C
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
R
P
– RECEIVER POWER – dBm
R
Figure 6. Propagation Delay through System
with One Meter of Cable.
Figure 7. Typical Distortion of Pseudo Random
Data at 5 Mb/s.
PULSE
GEN
+15 V
RESISTOR VALUE AS NEEDED FOR
SETTING OPTICAL POWER OUTPUT
FROM RECEIVER END OF TEST CABLE
RS
1N4150
PULSE REPETITION
FREQ = 1 MHz
½ 75451
100 ns
100 ns
INPUT
2, 6, 7
IF 50%
3
10 W
tPHLT
tPHLT
TRANSMITTER
INPUT (IF)
IF 10 W
50%
PT
tPHL
MIN
FROM 1-METER
TEST CABLE
TIMING
ANALYSIS
EQUIPMENT
eg. SCOPE
PT -
+5 V
tPHL
MAX
tPHL
MAX
tPHL
MIN
RL
2
560
OUTPUT
+
5 V
VO
6
0.1 µF
1.5 V
0
VO
15 pF
7 & 3
HFBR-2412 RECEIVER
Figure 8. System Propagation Delay Test Circuit and Waveform Timing Definitions.
12
Ethernet 20 MBd Link (HFBR-14x4/24x6)
(refer to Application Note 1038 for details)
Typical Link Performance
Parameter
Symbol
Typ [1, 2]
Units
Conditions
Receiver Sensitivity
-34.4
dBm average
20 MBd D2D2 hexadecimal data
2 km 62.5/125 µm fiber
Link Jitter
7.56
7.03
ns pk-pk
ns pk-pk
ECL Out Receiver
TTL Out Receiver
Transmitter Jitter
Optical Power
0.763
-15.2
ns pk-pk
20 MBd D2D2 hexadecimal data
PT
dBm average
20 MBd D2D2 hexadecimal data
Peak IF,ON = 60 mA
LED Rise Time
tr
1.30
3.08
1.77
10-10
36.7
20
ns
ns
ns
1 MHz square wave input
LED Fall Time
tf
Mean Difference
Bit Error Rate
|tr - tf|
BER
Output Eye Opening
Data Format 50% Duty Factor
ns
At AUI receiver output
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
Parameter
Symbol
Typ [1, 2]
Units
Conditions
Receiver Sensitivity
-34.1
dBm average
32 MBd D2D2 hexadecimal data
2 km 62.5/125 µm fiber
Link Jitter
6.91
5.52
ns pk-pk
ns pk-pk
ECL Out Receiver
TTL Out Receiver
Transmitter Jitter
Optical Power Logic Level "0"
Optical Power Logic Level "1"
LED Rise Time
0.823
-12.2
-82.2
1.3
ns pk-pk
32 MBd D2D2 hexadecimal data
PT ON
PT OFF
tr
dBm peak
Transmitter TTL in IF ON = 60 mA,
IF OFF = 1 mA
ns
ns
ns
1 MHz square wave input
LED Fall Time
tf
3.08
1.77
10-10
32
Mean Difference
|tr - tf|
BER
Bit Error Rate
Data Format 50% Duty Factor
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)
13
155 MBd Link (HFBR-14x4/24x6)
(refer to Application Bulletin 78 for details)
Typical Link Performance
Parameter
Symbol
Min
Typ [1, 2] Max
Units
Conditions
Ref
Optical Power Budget with
50/125 µm fiber
OPB50
7.9
13.9
dB
NA = 0.2
Note 2
Optical Power Budget with
62.5/125 µm fiber
OPB62
OPB100
OPB200
11.7
11.7
16.0
1
17.7
17.7
22.0
175
1
dB
dB
NA = 0.27
NA = 0.30
NA = 0.35
Optical Power Budget with
100/140 µm fiber
Optical Power Budget with
200 µm HCS fiber
dB
Data Format 20% to 80% Duty
Factor
MBd
ns
System Pulse Width Distortion |tPLH - tPHL
|
PR = -7 dBm peak
1 m 62.5/125 µm fiber
Bit Error Rate
BER
10-9
Data rate < 100 MBaud
PR > -31 dBm peak
Note 2
Notes:
1. Typical data at T = +25 °C, V = 5.0 V dc, PECL serial interface.
A
CC
2. Typical OPB was determined at a probability of error (BER) of 10-9. Lower probabilities of error can be achieved with short fibers that have less
optical loss.
14
HFBR-14x2/14x4 Low-Cost High-
Speed Transmitters
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
Housed Product
PIN
11
2
32
41
51
6
72
81
FUNCTION
NC
ANODE
CATHODE
NC
2, 6, 7
ANODE
3
Description
CATHODE
NC
The HFBR-14xx fiber optic
transmitter contains an 820 nm
AlGaAs emitter capable of
efficiently launching optical
ANODE
ANODE
NC
4
3
2
1
5
6
7
8
NOTES:
1. PINS 1, 4, 5 AND 8
ARE ELECTICALLY
CONNECTED.
2. PINS 2, 6 AND 7 ARE
ELECTRICALLY CONNECTED
TO THE HEADER.
BOTTOM VIEW
PIN 1 INDICATOR
power into four different optical launched optical power level is
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 Agilent
useful for systems where star
couplers, taps, or inline
connectors create large fixed
losses.
Unhoused Product
PIN FUNCTION
1
2
3
4
ANODE
CATHODE
ANODE
ANODE
1
4
2
3
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.
HFBR-24xx fiber optic receivers.
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 transmitter is
BOTTOM VIEW
optimized for small size fiber
and typically can launch -15.8
dBm optical power at 60 mA
Absolute Maximum Ratings
Parameter
Symbol
Min
-55
Max
+85
Units
°C
Reference
Storage Temperature
TS
TA
Operating
-40
+85
°C
Temperature
Lead Soldering Cycle
Temp
Time
+260
10
°C
sec
Forward Input Current
Peak
dc
IFPK
IFdc
200
100
mA
V
Note 1
Reverse Input Voltage VBR
1.8
V
15
Electrical/Optical Specifications -40 °C to +85 °C unless otherwise specified.
Parameter
Symbol Min
Typ2
Max
Units
Conditions
Reference
Forward Voltage
VF
1.48
1.70
1.84
2.09
V
IF = 60 mA dc
IF = 100 mA dc
Figure 9
DVF/DT
Forward Voltage Temperature Coefficient
-0.22
-0.18
mV/°C
IF = 60 mA dc
IF = 100 mA dc
Figure 9
Reverse Input Voltage
VBR
1.8
3.8
820
55
V
IF = 100 µA dc
lP
Peak Emission Wavelength
Diode Capacitance
792
865
nm
pF
CT
V = 0, f = 1 MHz
DPT/DT
Optical Power Temperature Coefficient
-0.006
-0.010
dB/°C
I = 60 mA dc
I = 100 mA dc
qJA
NA
NA
D
Thermal Resistance
260
0.49
0.31
290
150
°C/W
Notes 3, 8
14x2 Numerical Aperture
14x4 Numerical Aperture
14x2 Optical Port Diameter
14x4 Optical Port Diameter
µm
µm
Note 4
Note 4
D
HFBR-14x2 Output Power Measured Out of 1 Meter of Cable
Parameter
Symbol Min
Typ2 Max Units
Conditions
Reference
50/125 µm Fiber Cable
NA = 0.2
PT50
PT62
PT100
PT200
-21.8
-22.8
-20.3
-21.9
-18.8
-16.8
-16.8
-15.8
-14.4
-13.8
dBm peak TA = +25 °C, IF = 60mA dc
TA = +25 °C, IF = 100 mA dc
Notes 5, 6, 9
62.5/125 µm Fiber Cable
NA = 0.275
-19.0
-20.0
-17.5
-19.1
-16.0
-14.0
-14.0
-13.0
-11.6
-11.0
dBm peak TA = +25 °C, IF = 60mA dc
TA = +25 °C, IF = 100 mA dc
100/140 µm Fiber Cable
NA = 0.3
-15.0
16.0
-13.5
-15.1
-12.0
-10.0
-10.0
-9.0
-7.6
-7.0
dBm peak TA = +25 °C, IF = 60mA dc
TA = +25 °C, IF = 100 mA dc
200 µm HCS Fiber Cable
NA - 0.37
-10.7
-11.7
-9.2
-7.1
-5.2
-4.7
-3.7
-2.3
-1.7
dBm peak TA = +25 °C, IF = 60mA dc
TA = +25 °C, IF = 100 mA dc
-10.8
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.
16
HFBR-14x4 Output Power Measured out of 1 Meter of Cable
Parameter
Symbol Min
Typ2 Max Units
Conditions
Reference
50/125 µm Fiber Cable
NA = 0.2
PT50
PT62
PT100
PT200
-18.8
-19.8
-17.3
-18.9
-15.8
-13.8
-13.8
-12.8
-11.4
-10.8
dBm peak TA = +25 °C, IF = 60mA dc
TA = +25 °C, IF = 100 mA dc
Notes 5, 6, 9
62.5/125 µm Fiber Cable
NA = 0.275
-15.0
-16.0
-13.5
-15.1
-12.0
-10.0
-10.0
-9.0
-7.6
-7.0
dBm peak TA = +25 °C, IF = 60mA dc
TA = +25 °C, IF = 100 mA dc
100/140 µm Fiber Cable
NA = 0.3
-9.5
-10.5
-8.0
-9.6
-6.5
-4.5
-4.5
-3.5
-2.1
-1.5
dBm peak TA = +25 °C, IF = 60mA dc
TA = +25 °C, IF = 100 mA dc
200 µm HCS Fiber Cable
NA - 0.37
-5.2
-6.2
-3.7
-5.3
-3.7
-1.7
+0.8
+1.8
+3.2
+3.8
dBm peak TA = +25 °C, IF = 60mA dc
TA = +25 °C, IF = 100 mA dc
HFBR-14x5 Output Power Measured out of 1 Meter of Cable
Parameter
Symbol Min
Typ2 Max Units
Conditions
Reference
62.5/125 µm Fiber Cable
NA = 0.275
PT62
-11.0
-12.0
-10.0
-10.0
-8.0
-7.0
dBm peak TA = +25 °C, IF = 60mA
14x2/14x4 Dynamic Characteristics
Parameter
Symbol Min
Typ2
Max
Units
Conditions
Reference
Rise Time, Fall Time
(10% to 90%)
tr, tf
4.0
6.5
nsec
No pre-
bias
IF = 60 mA
Figure 12
Note 7
Rise Time, Fall Time
(10% to 90%)
tr, tf
3.0
0.5
nsec
IF = 10 to 100 mA
Note 7,
Figure 11
Pulse Width Distortion
PWD
nsec
Figure 11
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 (MILSTD- 83522/13)
T
for HFBR-1412/1414, and with an SMA 905 precision ceramic ferrule for HFBR-1402/1404.
6. When changing mW to dBm, the optical power is referenced to 1 mW (1000 mW). Optical Power P (dBm) = 10 log P (mW)/1000 mW.
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 Agilent sales
representativeformoreinformation.
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.
17
Recommended Drive Circuits
Figure 11 uses frequency
speed data transmission at
The circuit used to supply
compensation to reduce the
signal rates of up to 155 MBd.
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
appropriate circuit techniques.
The LED drive circuit shown in
typical rise/fall times of the LED Component values for this
and a small pre-bias voltage to
minimize propagation delay
differences that cause pulse-
circuit can be calculated for
different LED drive currents
using the equations shown
width distortion. The circuit will below. For additional details
typically produce rise/fall times
of 3 ns, and a total jitter
including pulse-width distortion
of less than 1 ns. This circuit is
recommended for applications
requiring low edge jitter or high-
about LED drive circuits, the
reader is encouraged to read
Agilent Application Bulletin 78
and Application Note 1038.
(VCC − VF) + 3.97(VCC − VF −1.6V)
(5 −1.84) + 3.97(5 −1.84 −1.6)
RY
RY =
IF ON (A)
0.100
3.16 + 6.19
1
RY
RY =
= 93.5 Ω
RX1 =
0.100
2 3.97
1 93.5
REQ2 (Ω) = RX1 −1
RX1 =
= 11.8 Ω
2 3.97
RX2 = RX3 = RX4 = 3(REQ2)
REQ2 =11.8 -1 =10.8 Ω
RX2 = RX3 = RX4 = 3 (10.8) = 32.4 Ω
2000 ps
2000 ps
C(pF) =
RX1(Ω)
Example for IF ON = 100mA :
C =
= 169 pF
11.8 Ω
VF can be obtained from Figure 9 (=1.84 V).
18
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
3.0
2.0
100
80
+85 °C
+25 °C
1.4
1.0
0.8
60
0
-40 °C
-1.0
-2.0
-3.0
-4.0
-5.0
-7.0
40
20
10
0
0
10 20 30 40 50 60 70 80 90 100
– FORWARD CURRENT – mA
I
F
2.2
1.8
2.0
1.2
1.4
1.6
VI - FORWARD VOLTAGE - V
Figure 9. Forward Voltage and Current
Characteristics.
Figure 10. Normalized Transmitter Output vs.
Forward Current.
+5 V
0.1 µF
+
4.7 µF
¼
Ry
12, 13
74F3037
2
1
3
15
14
RX2
RX3
RX4
RX1
16
4, 5
¼ 74F3037
C
10
11
¼ 74F3037
9
5
HFBR-14x2/x4
8
7
¼ 74F3037
Figure 11. Recommended Drive Circuit.
HP8082A
PULSE
GENERATOR
SILICON
AVALANCHE
PHOTODIODE
50 Ω
TEST
HEAD
HIGH SPEED
OSCILLOSCOPE
50 Ω
LOAD
RESISTOR
Figure 12. Test Circuit for Measuring t , t .
r
f
19
HFBR-24x2 Low-Cost 5 MBd
Receiver
designed for direct interfacing to Housed Product
popular logic families. The
absence of an internal pull-up
resistor allows the open-
collector output to be used with
logic families such as CMOS
requiring voltage excursions
2
6
Vcc
DATA
Description
7 & 3
COMMON
The HFBR-24x2 fiber optic
receiver is designed to operate
with the Agilent HFBR-14xx
fiber optic transmitter and 50/
125 µm, 62.5/125 µm, 100/ 140
µm, and 200 µm HCS® fiber
optic cable. Consistent coupling
into the receiver is assured by
the lensed optical system
4 5
3 6
2 7
1 8
much higher than V
.
CC
BOTTOM VIEW
PIN 1 INDICATOR
Both the open-collector “Data”
output Pin 6 and V Pin 2 are
CC
PIN
11
2
FUNCTION
NC
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
V
CC (5 V)
32
41
51
6
COMMON
NC
NC
DATA
COMMON
NC
72
81
(Figure 1). Response does not
vary with fiber size ≤ 0.100 µm.
NOTES:
1. PINS 1, 4, 5 AND 8 ARE ELECTRICALLY CONNECTED
2. PINS 3 AND 7 ARE ELECTRICALLY CONNECTED TO HEADER
The HFBR-24x2 receiver
incorporates an integrated photo that a bypass capacitor (0.1 mF
IC containing a photodetector
and dc amplifier driving an
opencollector Schottky output
transistor. The HFBR-24x2 is
ceramic) be connected from Pin
Unhoused Product
2 (V ) to Pin 3 (circuit
CC
common) of the receiver.
PIN FUNCTION
1
2
3
4
VCC (5 V)
COMMON
DATA
1
4
2
3
COMMON
BOTTOM VIEW
Absolute Maximum Ratings
Parameter
Symbol
Min
-55
Max
+85
Units
°C
Reference
Storage Temperature
TS
TA
Operating
-40
+85
°C
Temperature
Lead Soldering Cycle
Note 1
Temp
Time
+260
10
°C
sec
Supply Voltage
Output Current
Output Voltage
VCC
IO
-0.5
-0.5
7.0
25
V
mA
V
VO
18.0
40
Output Collector
PO AV
mW
Power Dissipation
Fan Out (TTL)
N
5
Note 2
20
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
Parameter
Symbol Min
Typ3
Max
Units
Conditions
Reference
High Level Output Current
IOH
5
250
µA
VO = 18
PR < -40 dBm
Low Level Output Voltage
High Level Supply Current
Low Level Supply Current
VOL
ICCH
ICCL
0.4
3.5
6.2
0.5
6.3
10
V
IO = 8 mA
PR > -24 dBm
mA
mA
VCC = 5.25 V
PR < -40 dBm
VCC = 5.25 V
PR > -24 dBm
Equivalent NA
NA
D
0.50
400
Optical Port Diameter
µm
Note 4
Dynamic Characteristics
-40 °C to +85 °C unless otherwise specified; 4.75 V ≤ V ≤ 5.25 V; BER ≤ 10-9
CC
Parameter
Symbol Min
Typ3
Max
Units
Conditions
Reference
lP = 820 nm
Peak Optical Input Power Logic Level HIGH PRH
-40
0.1
dBm pk
µW pk
Note 5
Peak Optical Input Power Logic Level LOW PRL
-25.4
2.9
-9.2
120
dBm pk
µW pk
TA = +25 °C,
IOL = 8mA
Note 5
Note 6
-24.0
4.0
-10.0
100
dBm pk
µW pk
IOL = 8mA
Propagation Delay LOW to HIGH
Propagation Delay HIGH to LOW
tPLHR
tPHLR
65
49
ns
ns
TA = +25 °C,
PR = -21 dBm,
Data Rate =
5 MBd
Notes:
1. 2.0 mm from where leads enter case.
2. 8 mA load (5 x 1.6 mA), RL = 560 W.
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 mm 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.
21
HFBR-24x6 Low-Cost 125 MHz
Receiver
preamplifier 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 amplitude
from the HFBR-24x6 receiver is
much larger than from a simple
PIN photodiode, it is less
receiver from noisy host
systems. Refer to AN 1038, 1065,
or AB 78 for details.
Description
The HFBR-24x6 fiber optic
receiver is designed to operate
with the Agilent HFBR-14xx
fiber optic transmitters and 50/
125 µm, 62.5/125 µm, 100/140
Housed Product
6
Vcc
2
ANALOG SIGNAL
3 & 7
VEE
µm and 200 µm HCS® fiber optic susceptible to EMI, especially at
4
3
2
1
5
6
7
8
cable. Consistent coupling into
the receiver is assured by the
high signaling rates. For very
noisy environments, the
lensed optical system (Figure 1). conductive or metal port option
BOTTOM VIEW
PIN 1 INDICATOR
Response does not vary with
fiber size for core diameters of
100 mm or less.
is recommended. A receiver
dynamic range of 23 dB over
temperature is achievable
(assuming 10-9 BER).
PIN
11
2
FUNCTION
NC
SIGNAL
VEE
NC
NC
VCC
VEE
NC
32
41
51
6
72
81
The receiver output is an analog
signal which allows follow-on
circuitry to be optimized for a
variety of distance/data rate
NOTES:
The frequency response is
typically dc to 125 MHz.
Although the HFBR-24x6 is an
1. PINS 1, 4, 5 AND 8 ARE ISOLATED FROM THE INTERNAL
CIRCUITRY, BUT ARE ELECTRICALLY CONNECTED TO EACH
OTHER.
2. PINS 3 AND 7 ARE ELECTRICALLY CONNECTED TO HEADER
requirements. Low-cost external analog receiver, it is compatible
components can be used to
convert the analog output to
with digital systems. Please refer
to Application Bulletin 78 for
Unhoused Product
logic compatible signal levels for simple and inexpensive circuits
various data formats and data
rates up to 175 MBd. This
distance/data rate trade-off
results in increased optical
power budget at lower data
rates which can be used for
additional distance or splices.
that operate at 155 MBd or
higher.
PIN FUNCTION
1
2
3
4
SIGNAL
VEE
VCC
1
4
2
3
VEE
The recommended ac coupled
receiver circuit is shown in
Figure 14. It is essential that a
10 ohm resistor be connected
between pin 6 and the power
supply, and a 0.1 mF ceramic
bypass capacitor be connected
between the power supply and
ground. In addition, pin 6
BOTTOM VIEW
The HFBR-24x6 receiver
contains a PIN photodiode and
low noise transimpedance
should be filtered to protect the
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 13. 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.
22
Absolute Maximum Ratings
Parameter
Symbol
Min
-55
Max
+85
Units
°C
Reference
Storage Temperature
TS
TA
Operating
-40
+85
°C
Temperature
Lead Soldering Cycle
Note 1
Temp
Time
+260
10
°C
sec
Supply Voltage
Output Current
Signal Pin Voltage
VCC
IO
-0.5
-0.5
6.0
25
V
mA
V
VSIG
VCC
Electrical/Optical Characteristics -40 °C to +85 °C; 4.75 V ≤ Supply Voltage ≤ 5.25 V,
= 511 W, Fiber sizes with core diameter ≤ 100 mm, and N.A. ≤ -0.35 unless otherwise specified.
R
LOAD
Parameter
Symbol Min
Typ2
Max
Units
Conditions
Reference
Responsivity
RP
5.3
4.5
7
9.6
mV/µW
TA = +25 °C @ 820 Note 3, 4
nm, 50 MHz
Figure 18
11.5
0.59
mV/µW
mV
@ 820 nm, 50 MHz
RMS Output Noise Voltage
VNO
0.40
Bandwidth filtered
@ 75 MHz
Note 5
PR = 0 µW
0.70
mV
Unfiltered
Figure 15
bandwidth
PR = 0 µW
Equivalent Input Optical Noise Power
(RMS)
PN
PR
-43.0
0.050
-41.4
0.065
dBm
µW
Bandwidth Filtered
@ 75MHz
Optical Input Power (Overdrive)
-7.6
175
dBm pk
µW pk
TA = +25 °C
Note 6
Figure 16
-8.2
150
dBm pk
µW pk
W
Output Impedance
ZO
30
Test Frequency =
50 MHz
dc Output Voltage
Power Supply Current
Equivalent NA
VO dc
IEE
-4.2
-3.1
9
-2.4
15
V
PR = 0 µW
mA
RLOAD = 510 W
NA
D
0.35
324
Equivalent Diameter
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.
23
Dynamic Characteristics -40 °C to +85 °C; 4.75 V ≤ Supply Voltage ≤ 5.25 V; R
otherwise specified
= 511 W, C
= 5 pF unless
LOAD
LOAD
Parameter
Symbol Min
Typ2
3.3
Max
6.3
Units
Conditions
Reference
Rise/Fall Time 10% to 90%
Pulse Width Distortion
tr, tf
ns
ns
PR = 100 µW peak
PR = 150 µW peak
Figure 17
PWD
0.4
2.5
Note 8,
Figure 16
Overshoot
2
%
PR = 5 µW peak,
tr = 1.5 ns
Note 9
Bandwidth (Electrical)
BW
125
MHz
-3 dB Electrical
Note 10
Bandwidth - Rise Time Product
0.41
Hz • s
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/mW. Other parameters will change as well.
4. Pin #2 should be ac coupled to a load ³ 510 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:
VPK − V100%
x100%
V100%
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 14. 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.
24
150
3.0
6.0
5.0
4.0
125
100
2.5
2.0
t
t
75
50
f
1.5
1.0
3.0
2.0
1.0
r
25
0
0.5
0
0
10
P
20
30
40
50
60
70 80
0
50
100
150
200
250
300
-60 -40 -20
0
20
40
60
80 100
FREQUENCY – MH
– INPUT OPTICAL POWER – µW
Z
TEMPERATURE – ˚C
R
Figure 15. Typical Spectral Noise Density vs.
Frequency.
Figure 16. Typical Pulse Width Distortion vs.
Peak Input Power.
Figure 17. 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 18. Receiver Spectral Response
Normalized to 820 nm.
www.agilent.com/
semiconductors
For product information and a complete list of
distributors, please go to our web site.
For technical assistance call:
Americas/Canada: +1 (800) 235-0312 or
(916)788-6763
Europe: +49 (0) 6441 92460
China: 10800 650 0017
Hong Kong: (+65) 6756 2394
India, Australia, New Zealand: (+65) 6755 1939
Japan: (+81 3) 3335-8152(Domestic/International), or
0120-61-1280(DomesticOnly)
Korea: (+65) 6755 1989
Singapore, Malaysia, Vietnam, Thailand, Philippines,
Indonesia: (+65) 6755 2044
Taiwan: (+65) 6755 1843
Data subject to change.
Copyright © 2003 Agilent Technologies, Inc.
Obsoletes:5980-1065E
August 11, 2003
5988-3624EN
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