HP P67 User Manual

Low Cost, Miniature Fiber Optic Components with ST®, SMA, SC and FC Ports
Technical Data
HFBR-0400 Series

Features

• 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
• Specified with 50/125 µm,
62.5/125 µm, 100/140 µm, and 200 µm HCS
• Repeatable ST Connections within 0.2 dB Typical
• 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 with the SMA and ST Threaded Port Styles
®
Fiber

Applications

• Local Area Networks
• Computer to Peripheral Links
• Computer Monitor Links
• Digital Cross Connect Links
• Central Office Switch/PBX Links
• Video Links
• Modems and Multiplexers
• Suitable for Tempest Systems
• Industrial Control Links

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 4 kilometers. With the HFBR-24X6, the 125 MHz analog receiver, data rates of up to 175 megabaud are attainable.
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.
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.
ST® is a registered trademark of AT&T. HCS® is a registered trademark of the SpecTran Corporation.
46
5965-1655E (1/97)

HFBR-0400 Series Part Number Guide

HFBR X4XXaa
1 = Transmitter Option T (Threaded Port Option) 2 = Receiver Option C (Conductive Port Receiver Option)
Option M (Metal Port Option)
4 = 820 nm Transmitter and Option K (Kinked Lead Option)
Receiver Products TA = Square pinout/straight lead
TB = Square pinout/bent leads 0 = SMA, Housed HA = Diamond pinout/straight leads 1 = ST, Housed HB = Diamond pinout/bent leads 2 = FC, Housed E = SC, Housed 2 = Tx, Standard Power 3 = SMA Port, 90 deg. Bent Leads 4 = Tx, High Power 4 = ST Port, 90 deg. Bent Leads 2 = Rx, 5 MBd, TTL Output 5 = SMA Port, Straight Leads 6 = Rx, 125 MHz, Analog Output 6 = ST Port, Straight Leads

LINK SELECTION GUIDE

Data Rate (MBd) Distance (m) Transmitter Receiver Fiber Size (µm) Evaluation Kit
5 1500 HFBR-14X2 HFBR-24X2 200 HCS N/A 5 2000 HFBR-14X4 HFBR-24X2 62.5/125 HFBR-04X0
20 2700 HFBR-14X4 HFBR-24X6 62.5/125 HFBR-0414,
HFBR-0463 32 2200 HFBR-14X4 HFBR-24X6 62.5/125 HFBR-0414 55 1400 HFBR-14X4 HFBR-24X6 62.5/125 HFBR-0414
125 700 HFBR-14X4 HFBR-24X6 62.5/125 HFBR-0416 155 600 HFBR-14X4 HFBR-24X6 62.5/125 HFBR-0416 175 500 HFBR-14X4 HFBR-24X6 62.5/125 HFBR-0416
For additional information on specific links see the following individual link descriptions. Distances measured over temperature range from 0 to 70°C.

Applications Support Guide

This section gives the designer information necessary to use the HFBR-0400 series components to
make a functional fiber-optic transceiver. HP offers a wide selection of evaluation kits for hands-on experience with fiber­optic products as well as a wide
range of application notes com­plete with circuit diagrams and board layouts. Furthermore, HP’s application support group is always ready to assist with any design consideration.

Application Literature

Title Description
HFBR-0400 Series Transmitter & Receiver Reliability Data Reliability Data
Application Bulletin 73 Low Cost Fiber Optic Transmitter & Receiver Interface Circuits Application Bulletin 78 Low Cost Fiber Optic Links for Digital Applications up to 155 MBd Application Note 1038 Complete Fiber Solutions for IEEE 802.3 FOIRL, 10Base-FB and 10 Base-FL Application Note 1065 Complete Solutions for IEEE 802.5J Fiber-Optic Token Ring Application Note 1073 HFBR-0319 Test Fixture for 1X9 Fiber Optic Transceivers Application Note 1086 Optical Fiber Interconnections in Telecommunication Products
47

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 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:
• One HFBR-1414T transmitter
• One HFBR-2416T receiver
• Three meters of ST connec­tored 62.5/125 µm fiber optic cable
• 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 :
• 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

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
Note: Cable not included. Order HFBR-BXS010 seperately (2 pieces)

Package and Handling Information

Package Information

All HFBR-0400 Series transmitters and receivers are housed in a low-cost, dual-inline 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 applications.

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 protec­tive 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.

Recommended Chemicals for Cleaning/Degreasing HFBR-0400 Products

Alcohols: methyl, isopropyl, isobutyl. Aliphatics: hexane, heptane, Other: soap solution, naphtha.
Do not use partially halogenated hydrocarbons such as 1,1.1 trichloroethane, ketones such as MEK, acetone, chloroform, ethyl acetate, methylene dichloride, phenol, methylene chloride, or N-methylpyrolldone. Also, HP does not recommend the use of cleaners that use halogenated hydrocarbons because of their potential environmental harm.
Ultem® is a registered Trademark of the GE corporation.
48

Mechanical Dimensions HFBR-0400 SMA Series

HFBR-X40X

12.7
(0.50)
Rx/Tx
ORIGIN
hp YYWW
COUNTRY OF
12.7
(0.50)
HFBR-X40X
22.2
(0.87)
1/4 - 36 UNS 2A THREAD
6.35
(0.25)

HFBR-X43X

8.6
(0.34)
DIA
PINS 1,4,5,8
0.51 X 0.38
(0.020 X 0.015)
PINS 2,3,6,7
0.46
(0.018)
2.5
(0.10)
12
34
3.81
(0.15)
DIA.
DIA PIN CIRCLE
7.1
(0.28)
2.54
(0.10)
524
3
6 7
8
1
PIN NO. 1 INDICATOR
PART MARKING
4.8 TYP
(0.19)
2.3 TYP
(0.09)
YY WW
(0.25)
13.0
(0.51)
6.4 DIA
7.1
(0.28)
DIA
3.6
(0.14)
1.27
(0.05)
2.54
(0.10)
5.1
(0.20)
10.2
(0.40)

HFBR-X45X

3.6
MIN
(0.14)
NOTE 2
DIA
(0.34)
NOTE 2
NOTE: ALL DIMENSIONS IN MILLIMETRES AND (INCHES).
12
34
0.46
(0.018)
2.5
(0.10)
2.5
(0.10)
(0.28)
.46
(0.018)
7.1
TYP
DIA PIN CIRCLE
DIA
DIA TYP
2.5
(0.10)
3.0
(0.12)
9.1
(0.36)
TYP
TYP
13.2
(052)
PART MARKING
YY WW
13.0
(0.51)
2.0
(0.08)
4.1
(0.16)
7.1
(0.28)
(0.08)
(0.16)
2.0
4.1
DIA
1/4 - 36 UNS 2A THREAD8.6
1/4 - 36 UNS 2A THREAD
49

Mechanical Dimensions HFBR-0400 ST Series

HFBR-X41X

12.7
(0.50)
Rx/Tx
ORIGIN
hp YYWW
COUNTRY OF
12.7
(0.50)
HFBR-X41X
27.2
(1.07)
8.2
(0.32)
6.35
(0.25)

HFBR-X44X

3.6
(0.14)
8.6
(0.34)
MIN
NOTE 2
(0.10)
2.5
DIA
(0.020 X 0.015)
PINS 2,3,6,7
(0.018)
TYP
PINS 1,4,5,8
0.51 X 0.38
0.46 DIA
2.5
(0.10)
12
34
3.81
(0.15)
DIA PIN CIRCLE
7.1
(0.28)
0.46 (0.018) PIN DIA
2.54
(0.10)
5
4
6
2
7
8
13
PIN NO. 1 INDICATOR
4.9 TYP
(0.19)
2.4 TYP
(0.09)
3.0
TYP
(0.12)
2.5 TYP
(0.10)
X-YWW
(0.73)
(0.28)
2.0
(0.08)
7.0 DIA
(0.28)
18.6
7.1 DIA
PART MARKING
7.0
(0.28)
3.6
(0.14)
DIA
8.2
8.2
(0.32)
1.27
(0.05)
2.54
(0.10)
5.1
(0.20)
10.2
(0.40)

HFBR-X46X

50
8.6
(0.34)
NOTE 2
DIA
21 34
2.5 (0.10) DIA PIN CIRCLE
0.46
(0.018)
7.1
(0.28)
PIN DIA
18.6
(0.73)
13.2
(0.52)
9.1
(0.36)
NOTE: ALL DIMENSIONS IN MILLIMETRES AND (INCHES).
X-YWW
2.O
(0.08)
7.1 DIA
(0.28)
PART MARKING
7.0
(0.28)
DIA
8.2
(0.32)

Mechanical Dimensions HFBR-0400T Threaded ST Series

HFBR-X41XT

12.7
(0.50)
Rx/Tx
ORIGIN
hp YYWW
COUNTRY OF
12.7
(0.50)
5.1
(0.20)
HFBR-X41XT
27.2
(1.07)
8.4
(0.33)
7.6
(0.30)
6.35
(0.25)

HFBR-X44XT

HFBR-X46XT

8.6
(0.34)
3.6
(0.14)
NOTE 2
MIN
DIA
(0.020 X 0.015)
PINS 2,3,6,7
(0.018)
2.5
(0.10)
12
34
3.81
(0.15)
PINS 1,4,5,8
0.51 X 0.38
0.46 DIA
DIA PIN CIRCLE
7.1
(0.28)
0.46 (0.018) PIN DIA
2.5
TYP
(0.10)
(0.19)
(0.09)
3.0
(0.12)
2.5
(0.10)
4.9
2.4
2.54
(0.10)
5
3
6
24
7
8
1
PIN NO. 1 INDICATOR
TYP
TYP
TYP
TYP
DIA.
YY WW
7.1
(0.28)
3/8 - 32 UNEF - 2A
5.1
(0.20)
18.5
(0.73)
PART MARKING
7.1 DIA
(0.28)
2.0
(0.08)
4.1
(0.16)
5.1
(0.20)
DIA
7.6
(0.30)
ACROSS THREAD
FLATS
3/8 - 32 UNEF - 2A THREAD
3.6
(0.14)
8.4
(0.33)
1.27
(0.05)
2.54
(0.10)
5.1
(0.20)
10.2
(0.40)
8.6
(0.34)
NOTE 2
DIA
2.5
(0.10)
12
34
DIA PIN CIRCLE
(0.28)
0.46
(0.018)
7.1
PIN DIA
9.1
(0.36)
13.2
(0.52)
(0.08)
(0.16)
18.5
(0.73)
8.4
(0.33)
PART MARKING
YY WW
2.0
4.1
7.6
(0.30)
ACROSS THREAD
FLATS
3/8 - 32 UNEF - 2A THREAD
51

Mechanical Dimensions HFBR-0400 FC Series

12.7
(0.50)
Rx/Tx
ORIGIN
hp YYWW
COUNTRY OF
19.6
(0.77)
12.7
(0.50)
HFBR-X42X
M8 x 0.75 6G THREAD (METRIC)

Mechanical Dimensions HFBR-0400 SC Series

HFBR-X4EX
3.81
(0.15)
2.5
(0.10)
2.5
(0.10)
5
3
6
24
7
8
1
PIN NO. 1 INDICATOR
Rx/Tx
COUNTRY OF
ORIGIN
hp YYWW
(1.128)
7.9
(0.31)
HFBR-X4EX
28.65
10.0
(0.394)
3.6
(0.14)
5.1
(0.20)
10.2
(0.40)
52
15.95
(0.628)
12.7
(0.500)
LED OR DETECTOR IC
LENS–SPHERE
HOUSING
HEADER
EPOXY BACKFILL
PORT GROUNDING PATH INSERT
(ON TRANSMITTERS ONLY)
LENS–WINDOW
CONNECTOR PORT
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 UNEF­2B THREAD
PART NUMBER
DATE CODE
0.2 IN.
7,87
HEX-NUT
WASHER
(0.310)
6.61
(0.260)
DIA
(0.065)
7.87
(0.310)
(0.005)
1.65
0.14
TYP DIA
HEX-NUT
WASHER
12.70 (0.50)
10.41
(0.410)
DIA
MAX DIA
(0.065)
14.27 (0.563)
0.46
(0.018)
1.65
(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
TYP DIA
Rx/Tx
ORIGIN
hp YYWW
COUNTRY OF
WALL
HFBR-X40X
3/8 - 32 UNEF - 2A THREADING
1 THREAD AVAILABLE
NUT
WASHER
53

Options

In addition to the various port styles available for the HFBR­0400 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. 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:// www.hp.com/go/fiber
Option T (Threaded Port Option)
• Allows ST style port com­ponents to be panel mounted.
• Compatible with all current makes of ST multimode connectors
• Mechanical dimensions are compliant with MIL-STD­83522/13
• 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 25kV 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

Option M (Metal Port Option)

• Nickel plated aluminum con­nector receptacle
• Designed to withstand electro­static 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

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

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
• Choose from diamond or square pinout, straight or bent leads ADM Picture
• TA = Square pinout/straight
leads TB = Square pinout/bent leads HA = Diamond pinout/straight
leads
HB = Diamond pinout/bent
leads

Duplex Option

In addition to the standard options, some HFBR-0400 series products come in a duplex con­figuration 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: HFBR-5414 (Duplex ST) HFBR-5414T (Duplex Threaded
ST)
HFBR-54E4 (Duplex SC)
45
36
27
54
18 45 36 27
18

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 155 MBd link. The data given
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 OPB
50
with 50/125 µm fiber NA = 0.2 Optical Power Budget OPB
62.5
with 62.5/125 µm fiber NA = 0.27 Optical Power Budget OPB
100
with 100/140 µm fiber NA = 0.30 Optical Power Budget OPB
200
with 200 µm fiber NA = 0.37 Date Rate Synchronous dc 5 MBd Note 2 Asynchronous dc 2.5 MBd Note 3,
Propagation Delay t
PLH
LOW to HIGH PR = -21 dBm Peak Propagation Delay t
PHL
HIGH to LOW System Pulse Width t
PLH-tPHL
Distortion length = 1 m Bit Error Rate BER 10
4.2 9.6 dB HFBR-14X4/24X2 Note 1
8.0 15 dB HFBR-14X4/24X2 Note 1
8.0 15 dB HFBR-14X2/24X2 Note 1
12 20 dB HFBR-14X2/24X2 Note 1
Fig. 7
72 ns TA = 25°C, Figs. 6, 7, 8
46 ns
26 ns Fiber cable
-9
Data Rate <5 Bd PR > -24 dBm Peak
Notes:
1. OPB at TA = -40 to 85°C, VCC = 5.0 V dc, I
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.
= 60 mA. PR = -24 dBm peak.
F ON
55

5 MBd Logic Link Design

If resistor R1 in Figure 2 is
70.4 , a forward current IF of
48 mA is applied to the HFBR­14X4 LED transmitter. With IF = 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 setting R1 = 115 , the transmit­ter can be driven with IF= 30 mA, if it is desired to economize on power or achieve lower pulse distortion.
The following example will illus­trate the technique for selecting the appropriate value of IF and R1.
Maximum distance required = 400 meters. From Figure 3 the drive current should be 15 mA. From the transmitter data VF= 1.5 V (max.) at IF = 15 mA as shown in Figure 9.
VCC - VF5 V - 1.5 V
R1 = ––––––– = –––––––––
I
F
15 mA
R1 = 233␣
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 distance is still achievable.
Figure 2. Typical Circuit Configuration.
56
0
60
Figure 3. HFBR-1414/HFBR-2412 Link Design Limits with 62.5/125 µm Cable.
75 70 65 60
55 50 45 40
PROPOGATION DELAY –ns
35
PHL
30
OR t
25
PHL
t
20
-22 -21 -20 -19 -18 -17 -16 -15 -14 -13 -12
t
(TYP) @ 25°C
PLH
t
(TYP) @ 25°C
PHL
PR – RECEIVER POWER – dBm
Figure 4. HFBR-14X2/HFBR-24X2 Link Design Limits with 100/140 µm Cable.
55
50
45
40
35
30
D – NRZ DISTORTION – ns
t
25
20
-22 -21 -20 -19 -18 -17 -16 -15 -14 -13 -12 PR – RECEIVER POWER – dBm
-1
-2
-3
-4
-5
-6 0 0.4 0.8 1.2 1.6 2
10 LOG (t/to) NORMALIZED TRANSMITTER CURRENT (dB)
WORST CASE
-40°C, +85°C UNDERDRIVE
CABLE ATTENUATION dB/km
α MAX (-40°C, +85°C) 4 α MIN (-40°C, +85°C) 1 α TYP (-40°C, +85°C) 2.8
LINK LENGTH (km)
TYPICAL 26°C UNDERDRIVE
Figure 5. HFBR-14X4/HFBR-24X2 Link Design Limits with 50/125 µm Cable.
50
40
30
20
TRANSMITTER FORWARD CURRENT (mA)
F
I
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.
57

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 20 MBd D2D2 Hexadecimal Data
average 2 km 62.5/125 µm fiber
Link Jitter 7.56 ns pk-pk ECL Out Receiver
7.03 ns pk-pk TTL Out Receiver Transmitter Jitter 0.763 ns pk-pk 20 MBd D2D2 Hexadecimal Data Optical Power P
LED rise time t LED fall time t
T
r f
-15.2 dBm 20 MBd D2D2 Hexadecimal Data average Peak I
F,ON
= 60 mA
1.30 ns 1 MHz Square Wave Input
3.08 ns Mean difference |tr-tf| 1.77 ns Bit Error Rate BER 10
-10
Output Eye Opening 36.7 ns At AUI Receiver Output Data Format 50% Duty Factor 20 MBd
Notes:
1. Typical data at TA = 25°C, VCC = 5.0 V dc.
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 32 MBd D2D2 Hexadecimal Data
average 2 km 62.5/125 µm fiber
Link Jitter 6.91 ns pk-pk ECL Out Receiver
5.52 ns pk-pk TTL Out Receiver Transmitter Jitter 0.823 ns pk-pk 32 MBd D2D2 Hexadecimal Data Optical Power Logic Level “0” P Optical Power Logic Level “1” P
T OFF
LED Rise Time t LED Fall Time t
T ON
r f
-12.2 dBm peak Transmitter TTL in I I
= 1 mA
-82.2
F OFF
F ON
1.3 nsec 1 MHz Square Wave Input
3.08 nsec
= 60 mA,
Mean Difference |tr-tf| 1.77 nsec Bit Error Rate BER 10
-10
Data Format 50% Duty Factor 32 MBd
Notes:
1. Typical data at TA = 25°C, VCC = 5.0 V dc.
2. Typical performance of circuits shown in Figure 1 and Figure 3 of AN-1065 (see applications support section)
58

155 MBd Link (HFBR-14X4/24X6)

(refer to Application Bulletin 78 for details)

Typical Link Performance

Parameter Symbol Typ.
Optical Power Budget OPB
50
with 50/125 µm fiber Optical Power Budget OPB
62
with 62.5/125 µm fiber Optical Power Budget OPB
100
with 100/140 µm fiber Optical Power Budget OPB
200
with 200 µm HCSfFiber Data Format 20% to 1 175 MBd
80% Duty Factor System Pulse Width |t
PLH-tPHL
| 1 ns PR = -7 dBm Peak
Distortion 1 meter 62.5/125 µm fiber Bit Error Rate BER 10
Notes:
1. Typical data at TA = 25°C, VCC = 5.0 V dc, PECL serial interface.
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.
[1,2]
Units Max. Units Conditions Ref.
7.9 13.9 dB NA = 0.2 Note 2
11.7 17.7 dB NA = 0.27
11.7 17.7 dB NA = 0.30
16.0 22.0 dB NA = 0.35
-9
Data Rate < 100 MBaud PR >-31 dBm Peak Note 2
59
HFBR-14X2/14X4 Low­Cost High-Speed Transmitters

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 Hewlett­Packard 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 optimized for small size
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 connec­tors create large fixed losses.
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.
Housed Product
Unhoused Product

Absolute Maximum Ratings

Parameter Symbol Min. Max. Units Reference
Storage Temperature T Operating Temperature T
S A
Lead Soldering Cycle Temp. +260 °C
Time 10 sec
Forward Input Current Peak I
dc I
Reverse Input Voltage V
FPK
Fdc
BR
-55 +85 °C
-40 +85 °C
200 mA Note 1 100 mA
1.8 V
60

Electrical/Optical Specifications -40°C to +85°C unless otherwise specified.

Parameter Symbol Min. Typ.
Forward Voltage V
1.48 1.70 2.09 V IF = 60 mA dc Figure 9
F
Forward Voltage VF/T -0.22 mV/°CIF = 60 mA dc Figure 9
Temperature Coefficient
Reverse Input Voltage V Peak Emission Wavelength λ Diode Capacitance C
BR
P
T
1.8 3.8 V IF = 100 µA dc
792 820 865 nm
Optical Power Temperature PT/T -0.006 dB/°C I = 60 mA dc Coefficient
Thermal Resistance θ
JA
14X2 Numerical Aperture NA 0.49 14X4 Numerical Aperture NA 0.31 14X2 Optical Port Diameter D 290 µm Note 4 14X4 Optical Port Diameter D 150 µm Note 4
[2]
Max. Units Conditions Reference
1.84 IF = 100 mA dc
-0.18 IF = 100 mA dc
55 pF V = 0, f = 1 MHz
-0.010 I = 100 mA dc
260 °C/W Notes 3, 8

HFBR-14X2 Output Power Measured Out of 1 Meter of Cable

Parameter Symbol Min. Typ.
50/125 µmP
T50
Fiber Cable NA = 0.2
-21.8 -18.8 -16.8 dBm TA = 25°CIF = 60 mA dc Notes 5, 6, 9
-22.8 -15.8
-20.3 -16.8 -14.4 TA = 25°CIF = 100 mA dc
-21.9 -13.8
62.5/125 µmP
T62
Fiber Cable NA = 0.275
-19.0 -16.0 -14.0 dBm TA = 25°CIF = 60 mA dc
-20.0 -13.0
-17.5 -14.0 -11.6 TA = 25°CIF = 100 mA dc
-19.1 -11.0
100/140 µmP
T100
Fiber Cable NA = 0.3
-15.0 -12.0 -10.0 dBm TA = 25°CIF = 60 mA dc
16.0 -9.0
-13.5 -10.0 -7.6 TA = 25°CIF = 100 mA dc
-15.1 -7.0
200 µm HCS P
Fiber Cable NA = 0.37
T200
-10.7 -7.1 -4.7 dBm TA = 25°CIF = 60 mA dc
-11.7 -3.7
-9.2 -5.2 -2.3 TA = 25°CIF = 100 mA dc
-10.8 -1.7
[2]
Max. Unit Conditions Reference
peak
peak
peak
peak
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.
61

HFBR-14X4 Output Power Measured out of 1 Meter of Cable

Parameter Symbol Min. Typ.
50/125 µm PT50 -18.8 -15.8 -13.8 dBm TA = 25°CIF = 60 mA dc Notes 5, 6, 9
Fiber Cable NA = 0.2
-19.8 -12.8
-17.3 -13.8 -11.4 TA = 25°CIF = 100 mA dc
-18.9 -10.8
62.5/125 µm PT62 -15.0 -12.0 -10.0 dBm TA = 25°CIF = 60 mA dc Fiber Cable NA = 0.275
-16.0 -9.0
-13.5 -10.0 -7.6 TA = 25°CIF = 100 mA dc
-15.1 -7.0
100/140 µm PT100 -9.5 -6.5 -4.5 dBm TA = 25°CIF = 60 mA dc Fiber Cable NA = 0.3
-10.5 -3.5
-8.0 -4.5 -2.1 TA = 25°CIF = 100 mA dc
-9.6 -1.5
200 µm HCS PT200 -5.2 -3.7 +0.8 dBm TA = 25°CIF = 60 mA dc Fiber Cable NA = 0.37
-6.2 +1.8
-3.7 -1.7 +3.2 TA = 25°CIF = 100 mA dc
-5.3 +3.8
[2]
Max. Unit Conditions Reference
peak
peak
peak
peak

14X2/14X4 Dynamic Characteristics

Parameter Symbol Min. Typ.
Rise Time, Fall Time tr, t
f
(10% to 90%) No Pre-bias Figure 12 Rise Time, Fall Time tr, t
f
(10% to 90%) 100 mA Figure 11 Pulse Width Distortion PWD 0.5 nsec Figure 11
[2]
Max. Units Conditions Reference
4.0 6.5 nsec IF = 60 mA Note 7,
3.0 nsec IF = 10 to Note 7,
Notes:
1. For I
2. Typical data at TA = 25°C.
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. PT 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) 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.
> 100 mA, the time duration should not exceed 2 ns.
FPK
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.
62
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 appro­priate circuit techniques. The LED drive circuit shown in
(VCC - VF) + 3.97 (VCC - VF - 1.6 V) (5 - 1.84) + 3.97 (5 - 1.84 - 1.6)
Ry = ––––––––––––––––––––––––––––––– Ry = –––––––––––––––––––––––––––––
I
F ON
Figure 11 uses frequency com­pensation 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 dis­tortion of less than 1 ns. This circuit is recommended for appli­cations requiring low edge jitter
(A) 0.100
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 Hewlett­Packard Application Bulletin 78 and Application Note 1038.
1 R RX1 = – –––– Ry = ––––––––––– = 93.5
2 3.97 0.100
R
() = RX1 - 1 RX1 = – –––– = 11.8
EQ2
RX2 = RX3 = RX4 = 3(R
C(pF) = –––––––– RX2 = RX3 = RX4 = 3(10.8) = 32.4
Example for I obtained from Figure 9 (= 1.84 V).
y
)
(
2000(ps)
RX1()
F ON
)R
EQ2
= 100 mA: VF can be C = ––––––– = 169 pF
3.16 + 6.19
1 93.5 2 3.97
= 11.8 - 1 = 10.8
EQ2
2000 ps
11.8
(
)
63
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
) – P(60 mA) – RELATIVE POWER RATIO
0
F
0
20 40 80
10 30 50 70 90
P(I
IF – FORWARD CURRENT – mA
60 100
3.0
2.0
1.4
1.0
0.8 0
-1.0
-2.0
-3.0
-4.0
-5.0
-7.0
) – P(60 mA) – RELATIVE POWER RATIO – dB
F
P(I
Figure 9. Forward Voltage and Current Characteristics.
Figure 11. Recommended Drive Circuit.
Figure 10. Normalized Transmitter Output vs. Forward Current.
Figure 12. Test Circuit for Measuring tr, tf.
64
HFBR-24X2 Low-Cost 5 MBd Receiver
Description
The HFBR-24X2 fiber optic receiver is designed to operate with the Hewlett-Packard HFBR­14XX 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 (Figure 1). Response does not vary with fiber size 0.100 µm.
The HFBR-24X2 receiver incor­porates an integrated photo IC containing a photodetector and dc amplifier driving an open­collector Schottky output transistor. The HFBR-24X2 is
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 families such as CMOS requiring voltage excursions much higher than VCC.
Both the open-collector “Data” output Pin 6 and VCC Pin 2 are 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 ceramic) be connected from Pin 2 (VCC) to Pin 3 (circuit common) of the receiver.
Housed Product
Unhoused Product
PIN FUNCTION
1
V
(5 V)
CC
2
COMMON
3
DATA
4
COMMON

Absolute Maximum Ratings

Parameter Symbol Min. Max. Units Reference
Storage Temperature T Operating Temperature T
S A
Lead Soldering Cycle Temp. +260 °C Note 1
Time 10 sec Supply Voltage V Output Current I Output Voltage V Output Collector Power Dissipation P
CC
O
O
O AV
Fan Out (TTL) N 5 Note 2
-55 +85 °C
-40 +85 °C
-0.5 7.0 V 25 mA
-0.5 18.0 V 40 mW
65

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 VCC 5.25 V
Parameter Symbol Min. Typ.
High Level Output Current I
OH
[3]
Max. Units Conditions Reference
5 250 µAV
= 18
O
PR < -40 dBm
Low Level Output Voltage V
OL
0.4 0.5 V IO = 8 mA PR > -24 dBm
High Level Supply Current I
CCH
3.5 6.3 mA VCC = 5.25 V PR < -40 dBm
Low Level Supply Current I
CCL
6.2 10 mA VCC = 5.25 V PR > -24 dBm
Equivalent N.A. NA 0.50 Optical Port Diameter D 400 µm Note 4

Dynamic Characteristics

-40°C to +85°C unless otherwise specified; 4.75 V VCC 5.25 V; BER 10
Parameter Symbol Min. Typ.
Peak Optical Input Power P Logic Level HIGH
Peak Optical Input Power P
Logic Level LOW
RH
RL
-25.4 -9.2 dBm pk TA = +25°C, Note 5
2.9 120 µW pk
[3]
Max. Units Conditions Reference
-40 dBm pk λP = 820 nm Note 5
0.1 µW pk
-24.0 -10.0 dBm pk IOL = 8 mA
4.0 100 µW pk
Propagation Delay LOW t
PLHR
65 ns TA = 25°C, Note 6
to HIGH PR = -21 dBm, Propagation Delay HIGH t
PHLR
49 ns
to LOW
-9
IOL = 8 mA
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 .
3. Typical data at TA = 25°C, VCC = 5.0 Vdc.
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.
66
HFBR-24X6 Low-Cost
N
125 MHz Receiver Description
The HFBR-24X6 fiber optic receiver is designed to operate with the Hewlett-Packard HFBR­14XX fiber optic transmitters 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 (Figure 1). Response does not vary with fiber size for core diameters of 100 µm or less.
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 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.
The HFBR-24X6 receiver contains a PIN photodiode and low noise transimpedance pre-amplifier
BIAS & FILTER
CIRCUITS
integrated circuit. The HFBR-24X6 receives an optical signal and converts it to an analog voltage. The output is a buffered emitter­follower. Because the signal 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 (assuming 10-9 BER).
The frequency response is typically dc to 125 MHz. Although the HFBR-24X6 is an analog receiver, it is compatible with digital systems. Please refer to Application Bulletin 78 for simple and inexpensive circuits that operate at 155 MBd or higher.
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
6
POSITIVE
V
CC
SUPPLY
receiver from noisy host systems. Refer to AN 1038, 1065, or AB 78 for details.
Housed Product
6
V
CC
ANALOG
2
SIGNAL
3, 7
V
EE
524
3
6 7
81
BOTTOM VIEW
* PINS 3 AND 7 ARE ELECTRICALLY CONNECTED TO THE HEADER.
† PINS 1, 4, 5, AND 8 ARE ISOLATED FROM THE INTERNAL CIRCUITRY, BUT ARE ELECTRICALLY CONNECTED TO EACH OTHER.
PIN NO. 1 INDICATOR
PIN FUNCTIO
N.C.
1†
SIGNAL
2
V
3*
EE
N.C.
4†
N.C.
5†
V
6
CC
V
7*
EE
N.C.
8†
Unhoused Product
PIN FUNCTION
1
SIGNAL
2*
V
EE
V
3
CC
V
4*
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.
mA
300 pF
2
ANALOG
V
OUT
SIGNAL
5.0
3, 7
NEGATIVE
V
EE
SUPPLY
67

Absolute Maximum Ratings

Parameter Symbol Min. Max. Units Reference
Storage Temperature T Operating Temperature T
S
A
-55 +85 °C
-40 +85 °C
Lead Soldering Cycle Temp. +260 °C Note 1
Time 10 s Supply Voltage V Output Current I Signal Pin Voltage V
CC
O
SIG
-0.5 6.0 V 25 mA
-0.5 V
CC
V

Electrical/Optical Characteristics -40°C to +85°C; 4.75 V Supply Voltage 5.25 V,

R
= 511 , Fiber sizes with core diameter 100 µm, and N.A. -0.35 unless otherwise specified
LOAD
Parameter Symbol Min. Typ.
Responsivity R
P
5.3 7 9.6 mV/µWTA= 25°C Note 3, 4
4.5 11.5 mV/µW @ 820 nm, 50 MHz
RMS Output Noise V
NO
Voltage @ 75 MHz
Equivalent Input P
N
Optical Noise Power @ 75 MHz (RMS)
Optical Input Power P
R
(Overdrive)
Output Impedance Z
dc Output Voltage V Power Supply Current I
o
o dc
EE
-4.2 -3.1 -2.4 V PR = 0 µW
Equivalent N.A. NA 0.35 Equivalent Diameter D 324 µm Note 7
[2]
Max. Units Conditions Reference
@ 820 nm, 50 MHz Figure 16
0.40 0.59 mV Bandwidth Filtered Note 5
PR = 0 µW
0.70 mV Unfiltered Bandwidth Figure 13 PR = 0 µW
-43.0
0.050
-41.4
0.065
dBm
µW
Bandwidth Filtered
-7.6 dBm pk TA = 25°C Figure 14 175 µW pk Note 6
-8.2 dBm pk 150 µW pk
30 Test Frequency =
50 MHz
915mAR
LOAD
= 510
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.
68

Dynamic Characteristics -40°C to +85°C; 4.75 V Supply Voltage 5.25 V; R

= 511 , C
LOAD
= 5 pF unless otherwise specified
Parameter Symbol Min. Typ.
Rise/Fall Time tr, t
f
[2]
Max. Units Conditions Reference
3.3 6.3 ns PR = 100 µW peak Figure 15
10% to 90% Pulse Width Distortion PWD 0.4 2.5 ns PR = 150 µW peak Note 8,
Figure 14
Overshoot 2 % PR = 5 µW peak, Note 9
tr = 1.5 ns Bandwidth (Electrical) BW 125 MHz -3 dB Electrical Bandwidth - Rise 0.41 Hz • s Note 10
Time Product
Notes:
1. 2.0 mm from where leads enter case.
2. Typical specifications are for operation at TA = 25°C and VCC = +5 V dc.
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:
VPK - V
100%
–––––––––– x 100%
( V
10. The conversion factor for the rise time to bandwidth is 0.41 since the HFBR-24X6 has a second order bandwidth limiting characteristic.
100%
)
LOAD
0.1 µF +5 V
10
6
30 pF
2
3 & 7
Figure 12. Recommended ac Coupled Receiver Circuit. (See AB 78 and AN 1038 for more information.)
POST
AMP
R
LOADS
500 MIN.
LOGIC
OUTPUT
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.
69
150
Z
125
100
75
50
25
SPECTRAL NOISE DENSITY – nV/ H
0
0 50 100 150 200 250
FREQUENCY – MH
3.0
2.5
2.0
1.5
1.0
0.5
PWD – PULSE WIDTH DISTORTION – ns
0
10 60
300
Z
02030405070
– INPUT OPTICAL POWER – µW
P
R
80
6.0
5.0
4.0
3.0
– RESPONSE TIME – ns
f
, t
r
2.0
t
1.0
t
f
t
r
-60 -40 -20 0 20 40 TEMPERATURE – °C
80 100
60
Figure 13. Typical Spectral Noise Distortion vs. Peak Input Power.
1.25
1.00
0.75
0.50
NORMALIZED RESPONSE
0.25
0
400 480 560 640 720 800
λ – WAVELENGTH – nm
880
Figure 16. Receiver Spectral Response Normalized to 820 nm.
960 1040
Figure 14. Typical Pulse Width Density vs. Frequency.
Figure 15. Typical Rise and Fall Times vs. Temperature.
70
Conductive Port Option for Low Cost Miniature Link Components
Technical Data

Applications

Features

• Significantly Decreases Effect of Electromagnetic Interference (EMI) on Receiver Sensitivity
• Available with Both SMA and Threaded ST Styled Port Receivers
• Allows the Designer to Separate the Signal and Conductive Port Grounds

Description

The conductive port option for the Low Cost Miniature Link component family consists of a grounding path from the conductive port to four grounding pins as shown in the package outline drawing. Signal ground is separate from the four grounding pins to give the designer more flexibility. This option is available with all SMA and ST panel mount styled port receivers. Electrical/optical performance of the receivers is not affected by the conductive port. Refer to the HFBR-0400 data sheets for more information.
HP recommends that the designer use separate ground paths for the signal ground and the conductive port ground in order to minimize the effects of coupled noise on the receiver circuitry. If the designer notices that extreme noise is present on the system chassis, care should be taken to electrically isolate the conductive port from the chassis.
In the case of ESD, the conduc­tive port option does not alleviate the need for system recovery procedures. A 15 kV ESD event entering through the port will not

Package Outline

NON-CONDUCTIVE PLASTIC HOUSING
524
3
1
8
PIN NO. 1 INDICATOR
6 7
CONDUCTIVE PLASTIC PORT

Option C

cause catastrophic failure for any HFBR-0400 receivers, but may cause soft errors. The conductive port option can reduce the amount of soft errors due to ESD events, but does not guarantee error-free performance.
Pin
Function
1
Port Ground Pin
2
Part Dependent
3
Part Dependent
4
Port Ground Pin
5
Port Ground Pin
6
Part Dependent
7
Part Dependent
8
Port Ground Pin
5965-9237E (5/97)
71

Reliability Information

Low Cost Miniature Link components with the Conductive Port Option are as reliable as standard HFBR-0400 components. The following tests were performed to verify the mechanical reliability of this option.

Ordering Information

To order the Conductive Port Option with a particular receiver component, place a “C” after the base part number. For example, to order an HFBR-2406 with this option, order an HFBR-2406C. As another example, to order an HFBR-2416T with this option, order an HFBR-2416TC.
This option is available with the following part numbers:
HFBR-2402 HFBR-2442T HFBR-2404 HFBR-2444T HFBR-2406 HFBR-2446T HFBR-2412T HFBR-2452 HFBR-2414T HFBR-2454 HFBR-2416T HFBR-2456 HFBR-2432 HFBR-2462T HFBR-2434 HFBR-2464T HFBR-2436 HFBR-2466T
Mechanical and Environmental Tests
[1]
MIL-STD-883/
Other Units Total
Test Reference Test Conditions Tested Failed
Temperature Cycling 1010 -55°C to +125°C700
Condition B 15 min. dwell/5 min. transfer
100 cycles
Thermal Shock 1011 -55°C to +125°C450
Condition B 5 min. dwell/10 sec. transfer
500 cycles
High temp. Storage 1008 TA = 125°C500
Condition B 1000 hours
Mechanical Shock 2002 1500 g/0.5 ms 40 0
Condition B 5 impacts each axis
[2]
Port Strength TA = 25°C 6 Kg-cm no port damage 20 0 Seal Dye Penetrant 1014 45 psi, 10 hours 15 0
(Zyglo) Condition D No leakage into microelectronic cavity Solderability 2003 245°C100 Resistance to 2015 3 one min. immersion brush 13` 0
Solvents after solvent Chemical Resistance - 5 minutes in Acetone, Methanol, 12 0
Boiling Water
Temperature- - TA = 85°C, RH = 85% 30 0 Humidity Biased, 500 hours
Lead Integrity 2004 8 oz. wt. to each lead tested for 16 0
Condition B2 three 90° arcs of the case
Electrostatic IEC-801-2 Direct contact discharge to port, 16 0 Discharge (ESD) 0-15 kV
[3]
Notes:
1.
Tests were performed on both SMA an ST products with the conductive port option.
2.
The Port Strength test was designed to address the concerns with hand tightening the SMA connector to the fiber optic port. The limit is set to a level beyond most reasonable hand fastening loading.
3.
HP has previously used an air discharge method to measure ESD; results using this method vary with air temperature and humidity. The direct contact discharge method is perferred due to better repeatability and conformance with IEC procedures. ESD immunity measured with the air discharge method is generally higher than with the direct contact discharge method.
72
Threaded ST Port Option for Low Cost Miniature Link Components
Technical Data

Option T

Features

• Threading Allows ST Styled Port Components to be Panel Mounted
• Compatible with all Current Makes of ST Multimode Connectors
• Mechanical Dimensions are Compliant with
MIL-STD-83522/13

Description

Low Cost Miniature Link compo­nents with the Threaded ST Port Option come with 0.2 inch (5.1 mm) of 3/8-32 UNEF-2A threads on the port. This option is available with all HFBR-0400, ST styled port components. Compo­nents with this option retain the same superior electrical/optical and mechanical performance as that of the base HFBR-0400 components. Refer to the HFBR­0400 data sheets for more information on electrical/optical performance and the HFBR-0400 Reliability data sheet for more information on mechanical durability.
5965-9238E (5/97)

Panel Mounting

Low Cost Miniature Link compo­nents with the Threaded ST Port Option are suitable for panel mounting to chassis walls. The maximum wall thickness possible when using nuts and washers from the HFBR-4411 kit is 0.11 inch (2.8 mm).

Package Outline

Housed Product
12.7
(0.50)
3.81
(0.15)
PINS 1, 4, 5, 8
0.51 x 0.38
(0.020 x 0.015)
PINS 2, 3, 6, 7
0.46
DIA.
(0.018)
3
12.7
(0.50)
(0.20)
YYWW
HFBR-X4XXT
27.2
(1.07)
2.54
(0.10)
524
6 7
81
PIN NO. 1 INDICATOR
5.1
7.1
(0.28)
3/8 - 32 UNEF - 2A THREADING
DIA.
3.60
(0.14)
2.54
(0.10)
8.4
(0.33)
7.6
(0.30)
6.35
(0.25)
1.27
(0.05)
5.1
(0.20)
73
10.2
(0.40)

Package Outline

DATE CODE
Port Product
2.5
DIA. PIN CIRCLE
(0.10)
8.6
DIA.
(0.34)
12 43
0.46
DIA.
(0.018)
ALL DIMENSIONS IN MILLIMETERS AND (INCHES).
7.1
(0.28)
13.2
(0.52)
(0.36)
2.0
(0.08)
4.1
(0.16)
9.1
5.1
(0.20)
YY WW
(0.28)
18.5
(0.73)
7.1
DIA.
3/8 - 32 UNEF - 2A THREADING
7.1
(0.28)
DIA.
8.4
(0.33)
7.6
(0.30) ACROSS THREAD
FLATS
The HFBR-4411 kit consists of 100 nuts and 100 washers with dimensions as shown in Figure 1. These kits are available from HP or any authorized distributor. Any standard size nut and washer will work, provided the total thickness of the wall, nut, and washer does not exceed 0.2 inch (5.1mm).
When preparing the chassis wall for panel mounting, use the
3/8 - 32 UNEF ­2A THREAD
9.53
DIA.
(0.375)
12.70
DIA.
(0.50)
TYP.
14.27 DIA.
(0.563)
10.41
MAX.
(0.410)
DIA.
mounting template in Figure 2. When tightening the nut, torque should not exceed 0.8 N-m (8.0 in-lb).

Ordering Information

To order the Threaded ST Port Option with a particular compo­nent, place a “T” after the base part number. For example, to order an HFBR-2416 with this option, order an HFBR-2416T.
1.65
(0.065)
ALL DIMENSIONS IN MILLIMETERS
AND (INCHES).
9.80
(0.386)
DIA.
8.0
(0.315)
This option is available with the following part numbers:
HFBR-1412 HFBR-1414 HFBR-1442 HFBR-1444 HFBR-1462 HFBR-1464 HFBR-2412 HFBR-2414
INTERNAL TOOTH LOCK WASHER
ALL DIMENSIONS IN MILLIMETERS AND (INCHES).
Figure 1. HFBR-4411 Mechanical Dimensions.
74
Figure 2. Recommended Cut-out for Panel Mounting.
Metal Port Option for HFBR-0400 Series Components
Technical Data

Option M

Features

• Nickel Plated Aluminum Connector Receptacle
• Withstands Electro-static Discharge (ESD) of 15 kV to the Port
• Significantly Decreases Effect of Electro-magnetic Interference (EMI) on Receiver Sensitivity
• Allows Separate Signal and Metal Port Grounds
• Available with SMA, ST, Threaded ST, and FC Styled Ports

Description

The metal port option for the HFBR-0400 Series gives designers the ability to have a metal connector receptacle with the familiar HFBR-0400 dual in­line package (DIP). The metal port option components have an internal electrical connection between the metal port and the four grounding pins, as shown in the package outline drawing. Signal ground is separate from the four grounding pins to give the flexibility in connecting the port to signal or chassis ground.
This feature aids in maintaining the integrity of the signal ground if the chassis is exposed to elec­trical noise. In addition, when the metal port is in good electrical contact with a well-grounded chassis, the metal port provides additional EMI shielding from electrically noisy circuits.

Applications

HP recommends that the designer use separate ground paths for the signal ground and the conductive metal port ground in order to minimize the effects of external coupled noise on receiver circuitry. If noise is present on the system chassis, care should be taken to electrically isolate the metal port from the chassis.
In the case of ESD, the metal port option does not alleviate the need for system recovery procedures. A 15 kV ESD event entering through the connector port will not cause catastrophic failure, but the metal port does not guarantee error-free performance during an ESD event.
The Metal Port Option is available with SMA, ST, Threaded ST (panel mount) and FC styled port transmitters and receivers. The electrical/optical specifications, the mechanical dimensions, and the pinouts of the components with metal ports are identical to the standard plastic port products.
5963-5603E (2/95)
75

Package Outline

NON-CONDUCTIVE
PINS 1,4,5,8
0.51 X 0.38
(0.020 X 0.015)
PINS 2,3,6,7
0.46 DIA
(0.018) DIA
PLASTIC HOUSING
METAL PORT
PIN NO. 1 INDICATOR

Ordering Information

This option will be available with the following part numbers:
Transmitters Receivers
HFBR-1402 HFBR-2402 HFBR-1412 HFBR-2412 HFBR-1412T HFBR-2412T HFBR-1422 HFBR-2422 HFBR-1404 HFBR-2406 HFBR-1414 HFBR-2416 HFBR-1414T HFBR-2416T HFBR-1424 HFBR-2426
DATE CODE
PART NUMBER
YYWW
HFBR-X4XXTM
Refer to the HFBR-14XX and HFBR-24XX data sheeets for electrical/optical/mechanical specifications for each part. To order the Metal Port Option with a particular transmitter or receiver component, simply add the letter “M” to the end of the standard part number. For example, HFBR-1412T with the metal port option is HFBR-1412TM.
Pin Function
1 Port Ground Pin 2 Part Dependent 3 Part Dependent 4 Port Ground Pin 5 Port Ground Pin 6 Part Dependent 7 Part Dependent 8 Port Ground Pin

Reliability Information

Low Cost Miniature Link Components with the Metal Port Option use the same semi­conductor devices and manufacturing processes as standard HFBR-0400 components, so reliability data for the HFBR-0400 Series is directly applicable. The tests listed below demonstrate the mechanical reliability of this package.

Mechanical and Environmental Tests

MIL-STD-883 or Units Total
Test Other Reference Test Conditions Tested Failed
Temperature Cycling 1010 -55 to +125°C, 15 minutes dwell, 40 0
Condition B 5 minutes transfer, 170 cycles
Unbiased Pressure 121°C, 100% relative humidity, 5 0 Pot Test 2 atmospheres, 48 hours
Mechanical Shock 2002 5 blows each X1, X2, Y1, Y2, Z1, Z2 40 0
Condition B 1500 G, 0.5 msec. pulse
Vibration Variable 2007 50 G, 20 to 2000 Hz. 4, 40 0 Frequency Condition A 4 minute cycles each X, Y, Z
76
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