BOARDCOM AFBR-2418MZ Low-cost, 820 nm miniature link fiber optic components with st, sma, sc, and fc port Datasheet

HFBR-14xxZ and HFBR-24xxZ Series
Low-Cost, 820 nm Miniature Link Fiber Optic
Components with ST, SMA, SC, and FC Ports
Data Sheet
Description
Features
The 820 nm Miniature Link 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 several kilometers. With the
HFBR-24x6Z, the 125 MHz analog receiver, data rates of up to
160 MBaud can be attained.
 RoHS compliant
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.
 Link distances up to several kilometers
Products are available in various options. For example,
transmitters with the improved protection option P show an
increased ESD resistance to the pins. This HFBR-141xPxZ
integrated solution is realized by including a Zener diode
parallel to the LED.
The HFBR-14x4Z high-power transmitter and HFBR-24x6Z
125 MHz receiver pair up to provide a duplex solution
optimized for 100BASE-SX. 100BASE-SX is a Fast Ethernet
Standard (100 Mb/s) at 850 nm on multimode fiber.
Evaluation kits are available for ST products, including
transmitter, receiver, eval board, and technical literature.
 Low-cost transmitters and receivers
 Choice of ST, SMA, SC, or FC ports
 820 nm wavelength technology
 Signal rates up to 160 MBaud
 Compatible with 50/125 μm, 62.5/125 μm, 100/140 μm, and
200 μm Plastic-Clad Silica (PCS) Fiber
 Repeatable ST connections within 0.2 dB typical
 Unique optical port design for efficient coupling
 Pick and place, and wave solderable
 No board-mounting hardware required
 Wide operating temperature range –40°C to +85°C
 Conductive port option
Applications
 100BASE-SX Fast Ethernet on 850 nm
 Media/fiber conversion, switches, routers, hubs, and NICs on
100BASE-SX
 Local area networks
 Computer-to-peripheral links and computer monitor links
 Digital cross connect links
 Central office switch/PBX links
 Video links
 Modems and multiplexers
 Suitable for Tempest systems
 Industrial control links
Broadcom
-1-
HFBR-14xxZ and HFBR-24xxZ Series
Data Sheet
Part Number Guide
A/HFBR - x 4 x x aa Z
1
Transmitter
2
Receiver
4
RoHS Compliant
820 nm Transmitter and
Receiver products
0
SMA, housed
1
ST, housed
2
FC, housed
E
SC, housed
P
Protection improved option
T
Threaded port option
C
Conductive port receiver option
M
Metal port option
2
TX, standard power
4
TX, high power
2
RX, 5 MBaud, TTL output
5
TX, high light output power
6
RX, 125 MHz, Analog Output
8
RX, DC to 50 MBaud, Digital Output
9
RX, 100 KBaud to 50 MBaud, Digital Output
Available Options
HFBR-1402Z
HFBR-1404Z
HFBR-1412PTZ
HFBR-1412PZ
HFBR-1412TMZ
HFBR-1412TZ
HFBR-1412Z
HFBR-1414PTZ
HFBR-1414PZ
HFBR-1414MZ
HFBR-1414TZ
HFBR-1414Z
HFBR-1415PMZ
HFBR-1415TZ
HFBR-1415Z
HFBR-1424Z
HFBR-14E4Z
HFBR-2402Z
HFBR-2406Z
HFBR-2412TCZ
HFBR-2412TZ
HFBR-2412Z
HFBR-2416MZ
HFBR-2416TCZ
HFBR-2416TZ
HFBR-2416Z
HFBR-2422Z
HFBR-24E2Z
HFBR-24E6Z
AFBR-2408Z
AFBR-2418Z
AFBR-2418TZ
AFBR-2418MZ
AFBR-2409Z
AFBR-2419TZ
AFBR-2419MZ
AFBR-2419Z
Note: For better readability of the electrical and optical specifications, all available options (P, T, C, and M) are covered by the HFBR-x4xxZ product name; exceptions
are explicitly noted.
Note: AFBR-24x8xZ receivers are designed for data rates from DC up to 50 MBaud. AFBR-24x9xZ supports transmissions from 100 KBaud up to 50 MBaud. Refer to
the separate data sheets for details about these digital optical receivers providing CMOS/TTL output logic.
Link Selection Guide
For additional information about specific links, see the individual link descriptions. The HFBR-1415Z can be used for increased
power budget or for lower driving current for the same Data Rates and Link Distances.
Data Rate
(MBaud)1
Distance (m)
Transmitter
Receiver
Fiber Size (μm)
Evaluation Kit
DC to 5
1500
HFBR-14x2Z
HFBR-24x2Z
62.5/125
HFBR-0410Z
20
2700
HFBR-14x4Z/14x5Z
HFBR-24x6Z
62.5/125
HFBR-0416Z
20 to 32
2200
HFBR-14x4Z/14x5Z
HFBR-24x6Z
62.5/125
HFBR-0416Z
DC to 50
2000
HFBR-14x4Z/14x5Z
AFBR-24x8xZ
62.5/125
AFBR-0549Z
0.1 to 50
1000
HFBR-14x4Z/14x5Z
AFBR-24x9xZ
62.5/125
AFBR-0550Z
20 to 55
1400
HFBR-14x4Z/14x5Z
HFBR-24x6Z
62.5/125
HFBR-0416Z
20 to 125
700
HFBR-14x4Z/14x5Z
HFBR-24x6Z
62.5/125
HFBR-0416Z
20 to 155
600
HFBR-14x4Z/14x5Z
HFBR-24x6Z
62.5/125
HFBR-0416Z
20 to 160
500
HFBR-14x4Z/14x5Z
HFBR-24x6Z
62.5/125
HFBR-0416Z
1. The data rate range in the table refers to the evaluation kit documentation. For an analog receiver, like the HFBR-24x6Z, the data rate range depends on the
receiver circuit used.
Broadcom
-2-
HFBR-14xxZ and HFBR-24xxZ Series
Data Sheet
Options
In addition to the various port styles available for the HFBR-0400Z 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 P (Protection improved option)
 Designed to withstand electrostatic discharge (ESD) of 2 kV (HBM) to the pins
 Available on TX with non-conductive ST and non-conductive threaded ST ports
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-STD- 83522/13
 Maximum wall thickness when using nuts and washers from the HFBR-4411Z 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 optical 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 threaded ST port style receivers only
 The conductive port is connected to Pins 1, 4, 5, and 8 through the Port Grounding Path Insert
Option M (Metal Port Option)
 Nickel plated aluminum connector receptacle
 Designed to withstand electrostatic discharge (ESD) of 15 kV to the optical 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 ST and threaded ST ports
 The metal port is connected to Pins 1, 4, 5, and 8 through the Port Grounding Path Insert
Broadcom
-3-
HFBR-14xxZ and HFBR-24xxZ Series
Data Sheet
Applications Support Guide
This section gives the designer information necessary to use the 820 nm Miniature Link Series components to make a functional
optical transmission link.
Broadcom offers evaluation kits for hands-on experience with fiber optic products as well as a wide range of application notes
complete with circuit diagrams and board layouts.
Furthermore, Broadcom’s application support group is always ready to assist with any design consideration.
Application Literature
Title
Description
Application Note 1065
Complete Solutions for IEEE 802.5J Fiberoptic Token Ring
Application Note 1121
DC to 32 MBaud Fiberoptic Solutions
Application Note 1122
2 to 70 MBaud Fiberoptic Solutions
Application Note 1123
20 to 160 MBaud Fiberoptic Solutions
Application Note 1137
Generic Printed Circuit Layout Rules
Evaluation Kits
Broadcom offers fiber optic kits that facilitate a simple means to evaluate and experience our products. These fiber optic kits
contain all the components and tools required for customers to quickly evaluate and access the value of our products within their
respective applications.
HFBR-0410Z ST Evaluation Kit: DC to 5 MBaud 820 nm Fiber Optic Eval Kit
Contains the following:
 One HFBR-1412Z transmitter
 One HFBR-2412Z receiver
 Eval board
 Related literature
HFBR-0416Z Evaluation Kit: 125 MBaud 820 nm Fiber Optic Eval Kit
Contains the following:
 One HFBR-1414Z transmitter
 One HFBR-2416Z receiver
 Eval board
 Related literature
AFBR-0549Z Evaluation Kit: DC to 50 MBaud 820 nm Fiber Optic Eval Kit
Contains the following:
 One HFBR-1414PTZ transmitter
 One AFBR-2418TZ receiver
 Eval board
 Related literature
Broadcom
-4-
HFBR-14xxZ and HFBR-24xxZ Series
Data Sheet
AFBR-0550Z Evaluation Kit: Up to 50 MBaud 820 nm Fiber Optic Eval Kit
Contains the following:
 One HFBR-1414PTZ transmitter
 One AFBR-2419TZ receiver
 Eval board
 Related literature
Package and Handling Information
Package Information
All transmitters and receivers of the 820 nm Miniature Link Series 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 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 pick and place 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. Note: This plastic or rubber port cap is made to protect
the optical path during assembly. It is not meant to remain on the part for a long period. 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 820 nm Miniature Link 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, Broadcom does not recommend the use
of cleaners that use halogenated hydrocarbons because of their potential environmental harm.
Broadcom
-5-
HFBR-14xxZ and HFBR-24xxZ Series
Data Sheet
Mechanical Dimensions (SMA Port)
HFBR-x40xZ
12.7
(0.50)
AVAGO
COUNTRY OF
ORIGIN
HFBR-x40xZ
TX/RX YYWW
1/4 - 36 UNS 2A THREAD
22.2
(0.87)
6.35
(0.25)
12.7
(0.50)
6.4
(0.25) DIA.
3.81
(0.15)
3.6
(0.14)
5
6
4
2.54
(0.10)
1
PINS 2,3,6,7
0.46 DIA.
(0.018)
8
2
7
3
10.2
(0.40)
1.27
(0.05)
2.54
(0.10)
PINS 1,4,5,8
0.51 X 0.38
(0.020 X 0.015)
5.1
(0.20)
PIN NO. 1
INDICATOR
Dimensions in mm (inches)
Mechanical Dimensions (ST Port)
12.7
(0.50)
AVAGO
COUNTRY OF
ORIGIN
HFBR-x41xZ
TX/RX YYWW
HFBR-x41xZ
4.9 max.
(0.193)
8.2
(0.32)
27.2
(1.07)
6.35
(0.25)
12.7
(0.50)
7.0 DIA.
(0.28)
3.81
(0.15)
5.1
(0.20)
1.27
(0.05)
3
6
4
5
2.54
(0.10)
PINS 2,3,6,7
Ø0.46
(0.018)
1
8
2
7
PINS 1,4,5,8
0.51 X 0.38
(0.020 X 0.015)
2.54
(0.10)
3.6
(0.14)
PIN NO. 1
INDICATOR
Dimensions in mm (inches)
Broadcom
-6-
10.2
(0.40)
HFBR-14xxZ and HFBR-24xxZ Series
Data Sheet
Mechanical Dimensions (Metal ST Port)
HFBR-x41xMZ
12.7
(0.50)
AVAGO
COUNTRY OF
ORIGIN
HFBR-x41xMZ
TX/RX YYWW
4.9 MAX.
(0.193)
8.4
(0.33)
27.2
(1.07)
6.35
(0.25)
12.7
(0.50)
7.0 DIA.
(0.28)
3.81
(0.15)
3.6
(0.14)
5.1
(0.20)
1.27
(0.05)
2.54
(0.10)
7 6
2 3
4
5
2.54
(0.10)
1
8
PINS 1,4,5,8
0.51 × 0.38
(0.020 × 0.015)
PINS 2,3,6,7
0.46 DIA.
(0.018) DIA.
10.2
(0.40)
PIN NO. 1
INDICATOR
Dimensions in mm (inches)
Mechanical Dimensions (Threaded ST Port)
HFBR-x41xTZ
12.7
(0.50)
4.9 MAX.
(0.193)
AVAGO
COUNTRY OF
ORIGIN
HFBR-x41xTZ
TX/RX YYWW
5.1
(0.20)
8.4
(0.33)
27.2
(1.07)
7.6
(0.30)
6.35
(0.25)
12.7
(0.50)
7.1 DIA.
(0.28)
3.6
(0.14)
5.1
(0.20)
3/8 - 32 UNEF - 2A
3.81
(0.15)
4
5
PINS 2,3,6,7
0.46 DIA.
(0.018)
1.27
(0.05)
2.54
(0.10)
2 3
7 6
PINS 1,4,5,8
0.51 × 0.38
(0.020 × 0.015)
1
8
2.54 DIA.
(0.10)
PIN NO. 1
INDICATOR
Dimensions in mm (inches)
Broadcom
-7-
10.2
(0.40)
HFBR-14xxZ and HFBR-24xxZ Series
Data Sheet
Mechanical Dimensions (FC Port)
HFBR-x42xZ
12.7
(0.50)
AVAGO
COUNTRY OF
ORIGIN
HFBR-x42xZ
TX/RX YYWW
M8 x 0.75 6G
THREAD (METRIC)
19.6
(0.77)
12.7
(0.50)
7.9
(0.31)
3.6
(0.14)
5.1
(0.20)
10.2
(0.40)
3.81
(0.15)
2.54
(0.10)
2 3
7 6
4
5
PINS 1,4,5,8 0.51 X 0.38
(0.020 X 0.015)
PINS 2,3,6,7 Ø 0.46
(0.018)
1
8
2.54
(0.10)
PIN NO. 1
INDICATOR
Dimensions in mm (inches)
Mechanical Dimensions (SC Port)
AVAGO
COUNTRY OF
ORIGIN
HFBR-x4ExZ
TX/RX YYWW
HFBR-x4ExZ
28.65
(1.128)
6.35
(0.25)
12.7
(0.50)
10.0
(0.394)
5.1
(0.20)
15.95
(0.628)
3.81
(0.15)
1.27
(0.05)
2.54
(0.10)
7 6
8
5
2
3 4
2.54
(0.10)
1
PINS 1,4,5,8
0.51 × 0.38
(0.020 × 0.015)
PINS 2,3,6,7
Ø 0.46
(0.018)
10.38
(0.409)
3.60
(0.14)
12.7
(0.50)
PIN NO. 1
INDICATOR
Dimensions in mm (inches)
Broadcom
-8-
HFBR-14xxZ and HFBR-24xxZ Series
Data Sheet
Cross-Sectional View
LED OR DETECTOR IC
LENS–SPHERE
(ON TRANSMITTERS ONLY)
HOUSING
LENS–WINDOW
CONNECTOR PORT
HEADER
EPOXY BACKFILL
Figure 1: HFBR-x41xTZ ST Series Cross-Sectional View
Panel Mount Hardware
HFBR-4401Z: for SMA Ports
HFBR-4411Z: for ST Ports
1/4 - 36 UNEF 2B THREAD
3/8 - 32 UNEF 2B THREAD
DATE CODE
0.2 IN.
7.87 DIA.
(0.310)
12.70 DIA.
(0.50)
1.65
(0.065)
HEX-NUT
1.65
(0.065)
HEX-NUT
3/8 - 32 UNEF 2A THREADING
1 THREAD
AVAILABLE
7.87 TYP.
(0.310) DIA.
6.61 DIA.
(0.260)
AVAGO
COUNTRY OF
ORIGIN
HFBR-x40xZ
TX/RX YYWW
PART
NUMBER
14.27 TYP.
(0.563) DIA.
10.41 MAX.
(0.410) DIA.
0.14
(0.005)
WASHER
0.46
(0.018)
WASHER
(Each HFBR-4401Z and HFBR-4411Z kit consists of 100 nuts and 100 washers).
Dimensions in mm (inches)
Port Cap Hardware
HFBR-4402Z: 500 SMA Port Caps
HFBR-4120Z: 500 ST Port Plugs
Broadcom
-9-
WALL
NUT
WASHER
HFBR-14xxZ and HFBR-24xxZ Series
Data Sheet
Typical Link Data
The following technical data is taken from 5 MBaud and 155 MBaud link using the 820 nm Miniature Link Series. 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.
5 MBaud Link (HFBR-14xxZ/24x2Z)
Link Performance –40°C to +85°C unless otherwise specified
Parameter
Symbol
Min.
Typ.
Optical Power Budget with 50/125 μm
fiber
OPB50
4.2
9.6
dB
HFBR-14x4Z/24x2Z
NA = 0.2
Note 1
Optical Power Budget with 62.5/125 μm
fiber
OPB62.5
8.0
15
dB
HFBR-14x4Z/24x2Z
NA = 0.27
Note 1
Optical Power Budget with 100/140 μm
fiber
OPB100
8.0
15
dB
HFBR-14x2Z/24x2Z
NA = 0.30
Note 1
Optical Power Budget with 200 μm fiber
OPB200
13.0
20
dB
HFBR-14x2Z/24x2Z
NA = 0.37
Note 1
Data Rate
Max.
DC
5
Unit
MBaud
Propagation Delay LOW to HIGH
tPLH
72
ns
Propagation Delay HIGH to LOW
tPHL
46
ns
tPLH – tPHL
26
ns
System Pulse Width Distortion
Bit Error Rate
BER
10-9
Notes:
1. Optical Power Board at TA = –40°C to +85°C, VCC = 5.0Vdc, IF ON = 60 mA. PR = –24 dBm peak.
2. 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.
Broadcom
- 10 -
Conditions
Reference
Note 2
TA = +25°C
PR = –21 dBm peak
Fiber cable length
=1m
Data rate < 5 MBaud
PR > –24 dBm peak
Figures
6, 7, 8
HFBR-14xxZ and HFBR-24xxZ Series
Data Sheet
5 MBaud Logic Link Design
The resistor R1 is the only significant element in the drive circuit (see Figure 2) that limits the current through the LED, apart from
the gate´s output port. Depending on the actual gate used, the voltage drop on the output port Vport could be neglected. The
forward voltage value, VF, of the LED depends on the desired LED current and on the temperature (see Figure 9). Make sure you
take this behavior into account for the calculations.
The curves in Figure 3, Figure 4, and Figure 5 are constructed assuming no inline splice or any additional system loss. Besides fiber
attenuation, for correct power budget calculation, make sure you take into account the effect of bending, humidity, ambient
temperature, aging and other relevant influences. All these additional losses reduce the achievable link distance accordingly.
For calculating the LED's aging effect, an additional loss of about 1.5 dB is recognized.
The following example will illustrate the technique for selecting the appropriate value of IF and R1:
R1 = VCC - VF
IF
Maximum distance required = 2000 meters by using HFBR-14x4Z/24x2Z logic link with 62.5/125 μm fiber.
Figure 4 shows the “worst-case” drive current of about 43 mA for reaching a distance of about 2000 meters.
Figure 9 shows the transmitter forward voltage of about VF = 1.62V. If the typical circuit configuration (Figure 2) is used at Vcc = 5.0
V, the resistor value “R1” should be choosen to 78.6Ω (3.38 V/43 mA) for reaching driver current of about 43 mA.
Page 16 shows the guaranteed HFBR-14x4Z´s optical output power limit of -16.0 dBm (for driver current of 60 mA) over the entire
temperature range.
Figure 10 shows the normalized typical output power. When the transmitter will be driven with 43 mA the optical output power is
about 0.70 or –1.55 dB lower than at 60 mA.
With an assumed fiber attenuation of 3.2 dB/km and the reduced driver current of 43 mA, the minimum optical output power at
fiber end is about –24 dBm, which is equal to the receiver sensitivity over the entire temperature range.
For balancing the individual additional system losses, the driver current must be increased accordingly.
Figure 2. Typical Circuit Configuration
TTL DATA OUT
SELECT R 1 TO SET I F
IF
R
+5 V
1
1K
HFBR - 24x 2Z
RECEIVER
HFBR - 14x xZ
TRANSMITTER
2
6
7
3
2
T
R
6
RL
7&3
V CC
0.1 μF
DATA IN
½ 75451
TRANSMISSION
DISTANCE =
Note:
A bypass capacitor (0.01 μF to 0.1 μF ceramic) must 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.
The following diagrams (Figure 3 to Figure 5) serve as an aid in Link Design and are based on theoretical calculations. For broad
use, no additional effects such as aging were taken into account. The additional losses and the individual safety buffer values
should be added separately. These diagrams reflect the pure viewing of power budget and do not allows conclusions about the
actual link quality.
Overdrive: Maximum optical output power of Tx combined with receiver sensitivity of –10 dBm over the entire temperature range.
Typical 25°C: Typical optical output power of Tx combined with receiver sensitivity of –25.4 dBm at TA = 25°C.
Worst Case: Minimum optical output power of Tx combined with receiver sensitivity of –24 dBm over the entire temperature
range.
Broadcom
- 11 -
HFBR-14xxZ and HFBR-24xxZ Series
Data Sheet
Figure 4: Typical HFBR-14x4xZ/HFBR-24x2xZ Link with
62.5/125 μm Fiber
100
100
90
90
80
Typical Transmitter current (mA)
Typical Transmitter current (mA)
Figure 3: Typical HFBR-14x4xZ/HFBR-24x2xZ Link with
100/140 μm Fiber
OVERDRIVE
Worst Case
TYPICAL, 25°C
70
60
50
40
30
20
10
80
70
OVERDRIVE
Worst Case
TYPICAL, 25°C
60
50
40
30
20
10
0
0
0
1
2
3
Fiber Length (km)
(Fiber Attenuation: 4 dB/km)
4
0
1
2
3
Fiber Length (km)
(Fiber Attenuation: 3.2 dB/km)
4
Figure 5: Typical HFBR-14x4xZ/HFBR-24x2xZ Link with
50/125 μm Fiber
100
Typical Transmitter current (mA)
90
Worst Case
TYPICAL, 25°C
80
70
60
50
40
30
20
10
0
0
1
2
3
Fiber Length (km)
(Fiber Attenuation: 2.7 dB/km)
4
Figure 7: Typical Pulse Width Distortion of Link (HFBR-14x4Z/HFBR-24x2Z) measured at TA=25°C, 5 MBaud, and with 1m of Cable
Figure 6: Typical Propagation Delay Times of Link (HFBR-14x4Z/
HFBR-24x2Z) measured at TA=25°C, 5 MBaud, and with 1m of Cable
55
75
tPLH (TYP) @ 25°C
65
50
60
45
tD – NRZ DISTORTION – ns
tPLH OR tPHL - PROPOGATION DELAY –ns
70
55
50
45
tPHL (TYP) @ 25°C
40
35
30
40
35
30
25
25
20
20
-22
-21
-20
-19
-18
-17
-16
-15
-14
-13
-22
-12
PR – RECEIVER POWER – dBm
-21
-20
-19
-18
-17
-16
-15
PR – RECEIVER POWER – dBm
Broadcom
- 12 -
-14
-13
-12
HFBR-14xxZ and HFBR-24xxZ Series
Data Sheet
Figure 8: System Propagation Delay Test Circuit and Waveform Timing Definitions
PULSE
GEN
+15V
RESISTOR VALUE AS NEEDED FOR
SETTING OPTICAL POWER OUTPUT
FROM RECEIVER END OF TEST CABLE
RS
1N4150
2, 6, 7
½ 75451
RS
IF
3
PULSE REPETITION
FREQ = 1 MHz
100 ns
INPUT
50%
tPHLT
tPHLT
TRANSMITTER
PT -
INPUT (I
FROM 1-METER
TEST CABLE
F)
2
RL
560
6
0.1 μF
7&3
OUTPUT
15 pF
+
P T 50%
tPHL
MAX
TIMING
ANALYSIS
EQUIPMENT
eg. SCOPE
+5 V
100 ns
VO
VO
tPHL
MIN
tPHL
MAX
tPHL
MIN
5V
1.5V
0
HFBR-2412Z RECEIVER
155 MBaud Link (HFBR-14x4Z/24x6Z)
Typical Link Performance
Parameter
Symbol
Min.
Typ. [1, 2]
Max.
Unit
Conditions
Optical Power Budget with
50/125 μm fiber
OPB50
13.9
dB
NA = 0.2
Optical Power Budget
with 62.5/125 μm fiber
OPB62
17.7
dB
NA = 0.27
Optical Power Budget
with 100/140 μm fiber
OPB100
17.7
dB
NA = 0.30
Optical Power Budget
with 200 μm PCS fiber
OPB200
22.0
dB
NA = 0.35
Data Format 20% to 80% Duty
Factor
System Pulse Width
Distortion
Bit Error Rate
20
160
|tPLH − tPHL|
1
BER
10-9
Reference
Note 2
MBaud
ns
PR = –7 dBm peak 1 m
62.5/125 μm fiber
Data rate < 100 MBaud
PR > –31 dBm peak
Note 2
Notes:
1. Typical data at TA = +25°C, VCC = 5.0Vdc, 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.
Broadcom
- 13 -
HFBR-14xxZ and HFBR-24xxZ Series
Data Sheet
HFBR-14x2Z/14x4Z/14x5Z Low-Cost High-Speed Transmitters
Description
The HFBR-14xxZ 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 Plastic-Clad Silica (PCS). This allows
the designer flexibility in choosing the fiber size. The HFBR14xxZ is designed to operate with the Broadcom Ltd. HFBR24xxZ fiber optic receivers.
The HFBR-14xxZ 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-14x4Z 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-14x2Z 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.
Note: Parameters “reverse input voltage” and “diode capacitance” for “HFBR-141xPxZ” transmitters deviate from the non
P-parts.
Consistent coupling efficiency is assured by the double-lens
optical system (Figure 1 on page 9). 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
ANODE
CATHODE
For 820 nm Miniature Link transmitters with protection improved option “P” a Zener diode parallel to the LED was implemented. Therefore, a higher ESD capability could be attained.
PIN
11
2
32
41
51
6
72
81
2, 6, 7
3
4
3
2
1
BOTTOM VIEW
5
6
7
8
FUNCTION
NC
ANODE
CATHODE
NC
NC
ANODE
ANODE
NC
PIN 1 INDICATOR
NOTES:
1. PINS 1, 4, 5, AND 8 ARE ELECTRICALLY CONNECTED.
2. PINS 2, 6, AND 7 ARE ELECTRICALLY CONNECTED TO THE HEADER.
Regulatory Compliance - Targeted Specifications
Feature
Performance
Reference
Electrostatic Discharge (ESD)
Class 1C (>1000V, <2000V) - Human Body Model
Note 1, 4
Class 1B (>500V, <1000V) - Human Body Model
Note 1, 2
Absolute Maximum Ratings
Symbol
Min.
Max.
Unit
Storage Temperature
Parameter
TS
–55
+85
°C
Operating Temperature
TA
–40
+85
°C
+260
10
°C
sec
Lead Soldering Cycle
Temp
Time
Forward Input Current
Peak
dc
IFPK
IFdc
200
100
mA
mA
Reverse Input Voltage
VBR
1.8
V
0.3
V
Notes:
1.
2.
3.
4.
ESD capability for all pins HBM (Human Body Model) according JEDEC JESD22-A114.
Valid for not protection improved transmitter option
For IFPK > 100 mA, the time duration should not exceed 2 ns.
Only valid for HFBR-141xPxZ (Protection improved option).
Broadcom
- 14 -
Reference
Note 3
Note 4
HFBR-14xxZ and HFBR-24xxZ Series
Data Sheet
Electrical/Optical Specifications
–40°C to +85°C unless otherwise specified.
Parameter
Forward Voltage
Symbol
Min.
Typ. [2]
Max.
Unit
VF
1.48
1.70
2.09
V
Reverse Input Voltage
ΔVF/ΔT
Peak Emission Wavelength
lP
Diode Capacitance
CT
Optical Power Temperature
Coefficient
–0.22
mV/K
IF = 60 mA dc
1.8
3.8
V
IF = –100 μA dc
0.3
0.7
V
IF = –100 μA dc
792
820
ΔPT/ΔT
865
pF
V = 0, f = 1 MHz
70
pF
V = 0, f = 1 MHz
–0.006
dB/K
–0.010
ΘJA
490
14x2Z Numerical Aperture
NA
0.49
14x4Z Numerical Aperture
NA
0.31
14x2Z Optical Port Diameter
D
14x4Z Optical Port Diameter
D
Note 10
nm
55
Thermal Resistance
Figure 9
IF = 100 mA dc
–0.18
VBR
Reference
Figure 9
IF = 100 mA dc
1.84
Forward Voltage Temperature
Coefficient
Conditions
IF = 60 mA dc
Note 10
I = 60 mA dc
I = 100 mA dc
K/W
Notes 3, 8
290
μm
Note 4
150
μm
Note 4
HFBR-14x2Z Output Power Measured Out of 1 Meter of Cable
Parameter
50/125 μm Fiber Cable
Symbol
Min.
Typ.
Max.
PT50
–21.8
–18.8
–16.8
dBm peak TA = +25°C, IF = 60 mA
–15.8
dBm peak TA = –40°C to +85°C, IF = 60 mA
–22.8
–20.3
–16.8
–21.9
62.5/125 μm Fiber Cable
PT62
–19.0
–16.0
–20.0
–17.5
–14.0
–19.1
100/140 μm Fiber Cable
PT100
–15.0
PT200
–10.0
–10.1
dBm peak TA = +25°C, IF = 100 mA
dBm peak TA = –40°C to +85°C, IF = 100 mA
–14.0
dBm peak TA = +25°C, IF = 60 mA
–13.0
dBm peak TA = –40°C to +85°C, IF = 60 mA
–11.6
dBm peak TA = +25°C, IF = 100 mA
–11.0
dBm peak TA = –40°C to +85°C, IF = 100 mA
–9.0
dBm peak TA = –40°C to +85°C, IF = 60 mA
–10.0
–7.6
dBm peak TA = +25°C, IF = 100 mA
–7.0
dBm peak TA = –40°C to +85°C, IF = 100 mA
–7.0
–5.0
dBm peak TA = +25°C, IF = 60 mA
–4.0
dBm peak TA = –40°C to +85°C, IF = 60 mA
–5.0
–2.6
dBm peak TA = +25°C, IF = 100 mA
–2.0
dBm peak TA = –40°C to +85°C, IF = 100 mA
–11.0
–8.5
–14.4
–13.8
–10
–15.1
200 μm PCS Fiber Cable
Conditions
–12.0
–16.0
–13.5
Unit
dBm peak TA = +25°C, IF = 60 mA
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.
Broadcom
- 15 -
Reference
Notes 5, 6, 9
Figure 10
HFBR-14xxZ and HFBR-24xxZ Series
Data Sheet
HFBR-14x4Z Output Power Measured out of 1 Meter of Cable
Parameter
50/125 μm Fiber Cable
NA = 0.2
Symbol
PT50
Min.
Typ. [2]
–18.8
–15.8
–19.8
–17.3
–13.8
–18.9
62.5/125 μm Fiber Cable
NA = 0.275
PT62
–15.0
–12.0
–16.0
–13.5
–10.0
–15.1
100/140 μm Fiber Cable
NA = 0.3
PT100
–11.5
–8.5
–12.5
–10.0
–6.5
–11.6
200 μm PCS Fiber Cable
NA = 0.37
PT200
–7.5
–4.5
–8.5
–6.0
–2.5
–7.6
Max.
Unit
Conditions
–13.8
dBm peak
TA = +25°C, IF = 60 mA
–12.8
dBm peak
TA = –40°C to +85°C, IF = 60 mA
–11.4
dBm peak
TA = +25°C, IF = 100 mA
–10.8
dBm peak
TA = –40°C to +85°C, IF = 100 mA
–10.0
dBm peak
TA = +25°C, IF = 60 mA
–9.0
dBm peak
TA = –40°C to +85°C, IF = 60 mA
–7.6
dBm peak
TA = +25°C, IF = 100 mA
–7.0
dBm peak
TA = –40°C to +85°C, IF = 100 mA
–6.5
dBm peak
TA = +25°C, IF = 60 mA
–5.5
dBm peak
TA = –40°C to +85°C, IF = 60 mA
–4.1
dBm peak
TA = +25°C, IF = 100 mA
–3.5
dBm peak
TA = –40°C to +85°C, IF = 100 mA
–2.5
dBm peak
TA = +25°C, IF = 60 mA
–1.5
dBm peak
TA = –40°C to +85°C, IF = 60 mA
–0.1
dBm peak
TA = +25°C, IF = 100 mA
0.5
dBm peak
TA = –40°C to +85°C, IF = 100 mA
Reference
Notes 5, 6, 9
Figure 10
HFBR-14x5Z Output Power Measured out of 1 Meter of Cable
Symbol
Min.
Typ.
Max.
Unit
50/125 μm Fiber Cable
NA = 0.2
Parameter
PT50
–16.5
–14.3
–11.5
dBm peak
TA = +25°C, IF = 60 mA
–10.5
dBm peak
TA = –40°C to 85°C, IF = 60 mA
62.5/125 μm Fiber Cable
NA = 0.275
PT62
200 μm Fiber Cable
NA = 0.37
PT200
–17.5
–12.0
–10.5
–13.0
–6.0
–3.6
–7.0
Conditions
–8.0
dBm peak
TA = +25°C, IF = 60 mA
–7.0
dBm peak
TA = –40°C to 85°C, IF = 60 mA
0.0
dBm peak
TA = +25°C, IF = 60 mA
1.0
dBm peak
TA = –40°C to 85°C, IF = 60 mA
Reference
Notes 5, 6, 9
Figure 10
14x2Z/14x4Z/14x5Z Dynamic Characteristics
Parameter
Symbol
Min.
Typ. [2]
Max.
6.5
Unit
Rise Time, Fall Time
(10% to 90%)
tr, tf
4.0
Rise Time, Fall Time
(10% to 90%)
tr, tf
3.0
ns
Pulse Width Distortion
PWD
0.5
ns
Conditions
ns
IF = 60 mA
No pre-bias Figure 11
IF = 10 to 100 mA
Reference
Note 7
Figure 12
Figure 12
Notes:
1. For IFPK > 100 mA, the time duration should not exceed 2 ns.
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 HFBR141xZ, and with an SMA 905 precision ceramic ferrule for HFBR-140xZ.
6. When changing mW to dBm, the optical power is referenced to 1 mW. Optical Power P(dBm) = 10log (P(mW) / 1 mW)
7. Pre-bias is recommended if signal rate >10 MBaud, 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.
10. Only valid for HFBR-141xPxZ (Protection improved option).
Broadcom
- 16 -
HFBR-14xxZ and HFBR-24xxZ Series
Data Sheet
All HFBR-14XXZ 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
Broadcom Ltd. 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.
2
90
1.8
70
60
50
40
30
85°C
25°C
- 40°C
20
P(If) -P(60mA) - RELATIVE POWER RATIO
100
80
FORWARD CURRENT (mA)
Figure 10: Normalized Typical Transmitter Output vs.
Forward Current
3.0
1.6
2.0
1.4
1.2
0.8
0
1
-1.0
0.8
0.6
0.4
-4.0
0.2
-7.0
0
10
1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9
2
0
2.1 2.2
FORWARD VOLTAGE (V)
Broadcom
- 17 -
10
20
30 40 50 60 70
FORWARD CURRENT (mA)
80
90
100
P(If) - P(60 mA) RELATIVE POWER RATIO (dB)
Figure 9: Typical Forward Voltage and Current Characteristics
HFBR-14xxZ and HFBR-24xxZ Series
Data Sheet
Recommended Transmitter Driver Circuitry
Transmitter
R1
R2
R3
C3
HFBR-14x2Z/x4Z/x5Z
33Ω
33Ω
270Ω
75 pF
Figure 11: Recommended Drive Circuit
2
IC1A
3
C2
10 μF
100 nF
GND
GND
HFBR-14x2Z/x4Z/x5Z
2
AN2
6
AN6
7
AN7
3
CAT
Tx
LL
C1
8
5
4
1
1
C3
TXVCC = 5.0V
R2
Data
13
IC1D
11
4
5
9
10
R1
R3
12
IC1B
6
GND
IC1C
8
GND
74ACT[Q]00MTC
Note: The component values shown in the table create a typical driver current of 60mA (peak). An individual check of the optical output signal quality of the used
optic transmitter is recommended during the circuit design.
Figure 12: Test Circuit for Measuring tr, tf
Agilent 81130A
PULSE/PATTERN
GENERATOR
GND OUT
SMA measuring cable (50Ω)
O/E CONVERTER
Silicon PIN photo diode
(50Ω terminated)
Broadcom
- 18 -
HIGH SPEED
OSCILLOSCOPE
(50Ω terminated)
HFBR-14xxZ and HFBR-24xxZ Series
Data Sheet
HFBR-24x2Z Low-Cost 5 MBaud Receiver
Description
The HFBR-24x2Z fiber optic receiver is designed to operate with the Broadcom Ltd. HFBR-14xxZ fiber optic transmitter and
50/125 μm, 62.5/125 μm, 100/140 μm, and 200 μm Plastic-Clad Silica (PCS) 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-24x2Z receiver incorporates an integrated photo IC containing a photodetector and dc amplifier driving an opencollector Schottky output transistor. The HFBR-24x2Z 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 Pins 3 and 7. The Data output allows busing,
strobing and wired OR circuit configurations. The transmitter is designed to operate from a single +5V supply. It is essential that a
bypass capacitor (100 nF ceramic) be connected from Pin 2 (VCC) to Pin 3 (circuit common) of the receiver.
Housed Product
2
6
7& 3
4
3
2
1
V cc
DATA
COMMON
5
6
7
8
BOTTOM VIEW
PI N
11
2
32
41
51
6
72
81
FUNCTION
NC
VCC (5V)
COMMON
NC
NC
DATA
COMMON
NC
PIN 1 INDICATOR
NOTES:
1. PINS 1, 4, 5, AND 8 ARE ELECTRICALLY CONNECTED.
2. PINS 3 AND 7 ARE ELECTRICALLY CONNECTED TO THE HEADER.
Absolute Maximum Ratings
Symbol
Min.
Max.
Unit
Storage Temperature
Parameter
TS
–55
+85
°C
Operating Temperature
TA
–40
+85
°C
+260
10
°C
sec
+7.0
V
25
mA
+18.0
V
PO AV
40
mW
N
5
Lead Soldering Cycle
Temp
Time
Supply Voltage
VCC
Output Current
IO
Output Voltage
VO
Output Collector Power Dissipation
Fan Out (TTL)
–0.5
–0.5
Notes:
1. 2.0 mm from where leads enter case.
2. 8 mA load (5 x 1.6 mA), RL = 560Ω.
Broadcom
- 19 -
Reference
Note 1
Note 2
HFBR-14xxZ and HFBR-24xxZ Series
Data Sheet
Electrical/Optical Characteristics
–40°C to + 85°C unless otherwise specified. Fiber sizes with core diameter ≤ 100 μm and N/A ≤ 0.35, 4.75V ≤ VCC ≤ 5.25V.
Parameter
High Level Output Current
Typ. [3]
Max.
Unit
IOH
5
250
μA
VO = 18, PR < –40 dBm
IO = 8 m, PR > –24 dBm
Symbol
Min.
Conditions
Low Level Output Voltage
VOL
0.4
0.5
V
High Level Supply Current
ICCH
3.5
6.3
mA
VCC = 5.25 V, PR < –40 dBm
Low Level Supply Current
ICCL
6.2
10
mA
VCC = 5.25 V, PR > –24 dBm
Equivalent NA
NA
0.50
Optical Port Diameter
D
400
μm
Reference
Note 4
Dynamic Characteristics
–40°C to + 85°C unless otherwise specified; 4.75V ≤ VCC ≤ 5.25V; BER ≤ 10-9
Parameter
Symbol
Peak Optical Input Power Logic Level
HIGH
PRH
Peak Optical Input Power Logic Level
LOW
PRL
Min.
Typ. [3]
Max.
Unit
Conditions
Reference
–40
0.1
dBm peak λP = 820 nm
μW peak
Note 5
–25.4
2.9
–9.2
120
dBm peak TA = +25°C,
μW peak IOL = 8 mA
Note 5
–24.0
4.0
–10.0
100
dBm peak TA = –40°C to +85°C,
μW peak IOL = 8 mA
Propagation Delay LOW to HIGH
tPLHR
65
ns
Propagation Delay HIGH to LOW
tPHLR
49
ns
TA = +25°C,
PR = –21 dBm,
Data Rate = 5 MBaud
Note 6
Notes:
1.
2.
3.
4.
2.0 mm from where leads enter case.
8 mA load (5 x 1.6 mA), RL = 560Ω.
Typical data at TA = +25°C, VCC = 5.0VDC.
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. 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.
Broadcom
- 20 -
HFBR-14xxZ and HFBR-24xxZ Series
Data Sheet
HFBR-24x6Z Low-Cost 125 MHz Receiver
Description
The HFBR-24x6Z fiber optic receiver is designed to operate with the Broadcom Ltd. HFBR-14xxZ fiber optic transmitters and
50/125 μm, 62.5/125 μm, 100/140 μm, and 200 μm Plastic-Clad Silica (PCS) 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 MBaud. 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.
The HFBR-24x6Z receiver contains a PIN photodiode and low noise transimpedance preamplifier integrated circuit. The HFBR24x6Z 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-24x6Z 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 a Bit Error Rate (BER) of 10-9.
The frequency response is typically DC to 125 MHz. Although the HFBR-24x6Z is an analog receiver, it is compatible with digital
systems.
The recommended ac coupled receiver circuit is shown in Figure 14. A 10Ω resistor must be connected between pin 6 and the
power supply, and a 100 nF ceramic bypass capacitor must be connected between the power supply and ground. In addition, pin
6 should be filtered to protect the receiver from noisy host systems. Refer to AN 1065 for details.
Housed Product
Figure 13: Simplified Schematic Diagram
6
BIAS & FILTER
CIRCUITS
V CC
6
POSITIVE
SUPPLY
V cc
2
ANALOG SIGNAL
3& 7 V
EE
300 pF
4
3
2
1
2
V OUT
ANALOG
SIGNAL
BOTTOM VIEW
5.0
mA
3, 7
V EE
PI N
11
2
32
41
51
6
72
81
NEGATIVE
SUPPLY
FUNCTION
NC
SIGNAL
V EE
NC
NC
V CC
V EE
NC
5
6
7
8
PIN 1 INDICATOR
NOTES:
1. PINS 1, 4, 5, AND 8 ARE ISOLATED
FROM THE INTERNAL CIRCUITRY,
BUT ARE CONNECTED TO EACH OTHER.
2. PINS 3 AND 7 ARE ELECTRICALLY
CONNECTED TO THE HEADER.
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.
Broadcom
- 21 -
HFBR-14xxZ and HFBR-24xxZ Series
Data Sheet
Absolute Maximum Ratings
Symbol
Min.
Max.
Unit
Storage Temperature
Parameter
TS
–55
+85
°C
Operating Temperature
TA
–40
+85
°C
+260
10
°C
sec
Lead Soldering Cycle
Temp
Time
Supply Voltage
VCC
Output Current
IO
Signal Pin Voltage
–0.5
–0.5
VSIG
+6.0
V
25
mA
VCC
V
Reference
Note 1
Electrical/Optical Characteristics
–40°C to +85°C; 4.75V ≤ Supply Voltage ≤ 5.25 V, RLOAD = 511Ω, Fiber sizes with core diameter ≤ 100 μm, and NA ≤ 0.35 unless
otherwise specified.
Parameter
Responsivity
Symbol
Min.
Typ. [2]
Max.
Unit
RP
5.3
7
9.6
mV/μW
TA = +25°C at 820 nm, 50 MHz
11.5
mV/μW
TA= −40°C to +85°C at 820nm,
50MHz
0.59
mV
Bandwidth filtered at 75 MHz
PR = 0 μW
Note 5
0.70
mV
Unfiltered bandwidth
PR = 0 μW
Figure 15
–41.4
0.065
dBm
μW
Bandwidth filtered at 75 MHz
4.5
RMS Output Noise Voltage
0.40
VNO
Equivalent Input Optical
Noise Power (RMS)
PN
Optical Input Power
(Overdrive)
PR
Output Impedance
ZO
dc Output Voltage
VO dc
–43.0
0.050
–7.6
175
dBm peak TA = +25°C
μW peak
–8.2
150
dBm peak TA = –40°C to +85°C
μW peak
30
Ω
Vcc – 3.1
Vcc – 2.4
V
Power Supply Current
IEE
9
15
mA
Equivalent NA
NA
0.35
D
324
Equivalent Diameter
Vcc – 4.2
Conditions
μm
Reference
Note 3, 4
Figure 18
Note 6
Figure 16
Test Frequency = 50 MHz
PR = 0 μW
RLOAD = 510Ω
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.
Broadcom
- 22 -
HFBR-14xxZ and HFBR-24xxZ Series
Data Sheet
Dynamic Characteristics
–40°C to +85°C; 4.75V ≤ Supply Voltage ≤ 5.25V; RLOAD = 511Ω, CLOAD = 5 pF unless otherwise specified
Parameter
Symbol
Min.
Typ. [2]
Max.
Unit
Conditions
Reference
Rise/Fall Time 10% to 90%
tr, tf
3.3
6.3
ns
PR = 100 μW peak
Figure 17
Pulse Width Distortion
PWD
0.4
2.5
ns
PR = 150 μW peak
Note 8, Figure 16
2
%
PR = 5 μW peak,
tr = 1.5 ns
Note 9
125
MHz
–3 dB Electrical
0.41
Hz × s
Overshoot
Bandwidth (Electrical)
BW
Bandwidth - Rise Time Product
Note 10
Notes:
1.
2.
3.
4.
5.
6.
7.
2.0 mm from where leads enter case.
Typical specifications are for operation at TA = +25°C and VCC = +5V DC.
For 200 μm PCS fibers, typical responsivity will be 6 mV/mW. Other parameters will change as well.
Pin #2 should be ac coupled to a load 510Ω. Load capacitance must be less than 5 pF.
Measured with a 3 pole Bessel filter with a 75 MHz, –3 dB bandwidth.
Overdrive is defined at PWD = 2.5 ns.
D is the effective diameter of the detector image on the plane of the fiber face. The numerical value is the product of the actual detector diameter and the lens
magnification.
8. Measured with a 10 ns pulse width, 50% duty cycle, at the 50% amplitude point of the waveform.
9. Percent overshoot is defined as:
(V
– V 100%
x 100%
V 100%
PK
)
10. The conversion factor for the rise time to bandwidth is 0.41 since the HFBR-24x6Z has a second order bandwidth limiting characteristic.
Figure 14: Recommended AC-Coupled Receiver Circuit
0.1 μF
+5V
10Ω
6
30 pF
2
3&7
POST
AMP
LOGIC
OUTPUT
R LOADS
500Ω MIN.
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.
Broadcom
- 23 -
HFBR-14xxZ and HFBR-24xxZ Series
Data Sheet
Figure 15: Typical Spectral Noise Density vs. Frequency
150
3.0
125
2.5
PWD – PULSE WIDTH DISTORTION – ns
Z
SPECTRAL NOISE DENSITY – nV/ H
Figure 16: Typical Pulse Width Distortion vs. Peak Input Power
100
75
50
25
0
2.0
1.5
1.0
0.5
0
0
50
100
150
200
250
300
0
FREQUENCY – MHz
30
40
50
60
70
80
Figure 18: Typical Receiver Spectral Response Normalized to
820 nm
6.0
1.25
5.0
1.00
NORMALIZED RESPONSE
t r, t f – RESPONSE TIME – ns
20
P R – INPUT OPTICAL POWER – μW
Figure 17: Typical Rise and Fall Times vs. Temperature
4.0
tf
3.0
10
tr
2.0
0.75
0.50
0.25
1.0
-60
-40
-20
0
20
40
60
80
0
400
100
480
560
640
720
800
λ – WAVELENGTH – nm
TEMPERATURE – °C
Broadcom
- 24 -
880
960
1040
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www.broadcom.com.
Broadcom, the pulse logo, Connecting everything, Avago Technologies, Avago, the A logo, and R2Coupler are
among the trademarks of Broadcom and/or its affiliates in the United States, certain other countries and/or the
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Broadcom Proprietary and Confidential. Copyright © 2017-2018 Broadcom. All Rights Reserved. The term
“Broadcom” refers to Broadcom Limited and/or its subsidiaries.
Broadcom reserves the right to make changes without further notice to any products or data herein to
improve reliability, function, or design. Information furnished by Broadcom is believed to be accurate and
reliable. However, Broadcom does not assume any liability arising out of the application or use of this
information, nor the application or use of any product or circuit described herein, neither does it convey any
license under its patent rights nor the rights of others.
AV02-0176EN – March 13, 2018
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