Broadcom
- 1 -
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
The 820 nm Miniature Link Series of components is designed
to provide cost-eective, high-performance ber 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.
Transmitters and receivers are directly compatible with
popular “industry-standard” connectors: ST, SMA, SC, and FC.
They are completely specied with multiple ber sizes;
including 50/125 μm, 62.5/125 μm, 100/140 μm, and 200 μm.
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 ber.
Evaluation kits are available for ST products, including
transmitter, receiver, eval board, and technical literature.
Features
RoHS compliant
Low-cost transmitters and receivers
Choice of ST, SMA, SC, or FC ports
820 nm wavelength technology
Signal rates up to 160 MBaud
Link distances up to several kilometers
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 ecient 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/ber 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 oce switch/PBX links
Video links
Modems and multiplexers
Suitable for Tempest systems
Industrial control links
Broadcom
- 2 -
HFBR-14xxZ and HFBR-24xxZ Series Data Sheet
Part Number Guide
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-2412MZ 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-2419Z
AFBR-2419TZ AFBR-2419MZ
Note: For better readability of the electrical and optical specications, 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.
A/HFBR - x 4 x x aa ZRoHS Compliant
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
1 Transmitter
2 Receiver
0 SMA, housed
1 ST, housed
2 FC, housed
E SC, housed
4 820 nm Transmitter and
Receiver products
T Threaded port option
C Conductive port receiver option
M Metal port option
P Protection improved option
Link Selection Guide
For additional information about specic 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)1Distance (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
- 3 -
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
Signicantly reduces eect 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
Signicantly reduces eect 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
- 4 -
HFBR-14xxZ and HFBR-24xxZ Series Data Sheet
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
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 oers evaluation kits for hands-on experience with ber 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.
Evaluation Kits
Broadcom oers ber optic kits that facilitate a simple means to evaluate and experience our products. These ber 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
- 5 -
HFBR-14xxZ and HFBR-24xxZ Series Data Sheet
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 ame retardant plastic (UL File #E121562). The transmitters are
easily identied by the light grey color connector port. The receivers are easily identied 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 sucient 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.
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
Broadcom
- 6 -
HFBR-14xxZ and HFBR-24xxZ Series Data Sheet
6.35
(0.25)
2.54
(0.10)
3.81
(0.15)
6.4
(0.25) DIA.
12.7
(0.50)
12.7
(0.50)
22.2
(0.87)
5.1
(0.20)
10.2
(0.40)
3.6
(0.14)
1.27
(0.05)
2.54
(0.10)
PINS 1,4,5,8
0.51 X 0.38
(0.020 X 0.015)
PINS 2,3,6,7
0.46
(0.018) DIA.
8
13
5
24
6
7
PIN NO. 1
INDICATOR
1/4 - 36 UNS 2A THREAD
AVAGO
COUNTRY OF
ORIGIN
HFBR-x40xZ
TX/RX YYWW
8.2
(0.32)
6.35
(0.25)
12.7
(0.50)
27.2
(1.07)
5.1
(0.20)
10.2
(0.40)
3.6
(0.14)
1.27
(0.05)
2.54
(0.10)
8
13
5
24
6
7
PIN NO. 1
INDICATOR
2.54
(0.10)
3.81
(0.15)
DIA.
12.7
(0.50)
7.0
(0.28)
4.9
(0.193) max.
PINS 1,4,5,8
0.51 X 0.38
(0.020 X 0.015)
PINS 2,3,6,7
Ø0.46
(0.018)
AVAGO
COUNTRY OF
ORIGIN
HFBR-x41xZ
TX/RX YYWW
Mechanical Dimensions (SMA Port)
HFBR-x40xZ
Mechanical Dimensions (ST Port)
HFBR-x41xZ
Dimensions in mm (inches)
Dimensions in mm (inches)
Broadcom
- 7 -
HFBR-14xxZ and HFBR-24xxZ Series Data Sheet
Mechanical Dimensions (Threaded ST Port)
HFBR-x41xTZ
Dimensions in mm (inches)
Dimensions in mm (inches)
Mechanical Dimensions (Metal ST Port)
HFBR-x41xMZ
PIN NO. 1
INDICATOR
PINS 1,4,5,8
0.51 × 0.38
(0.020 × 0.015)
PINS 2,3,6,7
0.46 DIA.
(0.018) DIA.
4.9
(0.193)
8.4
(0.33)
6.35
(0.25)
5.1
(0.20)
10.2
(0.40)
3.6
(0.14)
1.27
(0.05)
2.54
(0.10)
12.7
(0.50)
27.2
(1.07)
12.7
(0.50)
2.54
(0.10)
3.81
(0.15)
DIA.
7.0
(0.28)
8
13
5
24
6
7
MAX.
AVAGO
COUNTRY OF
ORIGIN
HFBR-x41xMZ
TX/RX YYWW
5.1
(0.20)
3/8 - 32 UNEF - 2A
8.4
(0.33)
6.35
(0.25)
12.7
(0.50)
27.2
(1.07)
5.1
(0.20)
10.2
(0.40)
3.6
(0.14)
1.27
(0.05)
2.54
(0.10)
PINS 1,4,5,8
0.51 × 0.38
(0.020 × 0.015)
PINS 2,3,6,7
0.46
(0.018) DIA.
8
13
5
24
6
7
PIN NO. 1
INDICATOR
2.54
(0.10)
3.81
(0.15)
DIA.
12.7
(0.50)
7.1
(0.28)
DIA.
7.6
(0.30)
4.9
(0.193) MAX.
AVAGO
COUNTRY OF
ORIGIN
HFBR-x41xTZ
TX/RX YYWW
Broadcom
- 8 -
HFBR-14xxZ and HFBR-24xxZ Series Data Sheet
Mechanical Dimensions (SC Port)
HFBR-x4ExZ
Dimensions in mm (inches)
M8 x 0.75 6G
THREAD (METRIC)
2.54
(0.10)
3.81
(0.15)
7.9
(0.31)
12.7
(0.50)
12.7
(0.50)
5.1
(0.20)
10.2
(0.40)
3.6
(0.14)
8
13
5
24
6
7
PIN NO. 1
INDICATOR
19.6
(0.77)
2.54
(0.10)
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)
AVAGO
COUNTRY OF
ORIGIN
HFBR-x42xZ
TX/RX YYWW
Mechanical Dimensions (FC Port)
HFBR-x42xZ
Dimensions in mm (inches)
28.65
(1.128)
15.95
(0.628)
10.0
(0.394)
12.7
(0.50)
12.7
(0.50)
2.54
(0.10)
3.81
(0.15)
6.35
(0.25)
5.1
(0.20)
10.38
(0.409)
3.60
(0.14)
1.27
(0.05)
2.54
(0.10)
PINS 1,4,5,8
0.51 × 0.38
(0.020 × 0.015)
PINS 2,3,6,7
Ø 0.46
(0.018)
8
13
5
24
6
7
PIN NO. 1
INDICATOR
AVAGO
COUNTRY OF
ORIGIN
HFBR-x4ExZ
TX/RX YYWW
Broadcom
- 9 -
HFBR-14xxZ and HFBR-24xxZ Series Data Sheet
Port Cap Hardware
HFBR-4402Z: 500 SMA Port Caps
HFBR-4120Z: 500 ST Port Plugs
Panel Mount Hardware
Dimensions in mm (inches)
Cross-Sectional View
Figure 1: HFBR-x41xTZ ST Series Cross-Sectional View
HOUSING
CONNECTOR PORT
HEADER
EPOXY BACKFILL
PORT GROUNDING PATH INSERT
LED OR DETECTOR IC
LENS–SPHERE
(ON TRANSMITTERS ONLY)
LENS–WINDOW
(Each HFBR-4401Z and HFBR-4411Z kit consists of 100 nuts and 100 washers).
7.87
(0.310)
7.87
(0.310) DIA.
1/4 - 36 UNEF -
2B THREAD
1.65
(0.065)
TYP.
DIA.
6.61
(0.260) DIA.
HEX-NUT
WASHER
0.14
(0.005)
14.27
(0.563)
12.70
(0.50) DIA.
3/8 - 32 UNEF -
2B THREAD
1.65
(0.065)
TYP.
DIA.
10.41
(0.410)
MAX.
DIA.
HEX-NUT
WASHER
0.46
(0.018)
3/8 - 32 UNEF -
2A THREADING
0.2 IN.
WALL
WASHER
NUT
1 THREAD
AVAILABLE
DATE CODE
PART
NUMBER
AVAGO
COUNTRY OF
ORIGIN
HFBR-x40xZ
TX/RX YYWW
HFBR-4401Z: for SMA Ports HFBR-4411Z: for ST Ports
Broadcom
- 10 -
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 specied
Parameter Symbol Min. Typ. Max. Unit Conditions Reference
Optical Power Budget with 50/125 μm
ber
OPB50 4.2 9.6 dB HFBR-14x4Z/24x2Z
NA = 0.2
Note 1
Optical Power Budget with 62.5/125 μm
ber
OPB62.5 8.0 15 dB HFBR-14x4Z/24x2Z
NA = 0.27
Note 1
Optical Power Budget with 100/140 μm
ber
OPB100 8.0 15 dB HFBR-14x2Z/24x2Z
NA = 0.30
Note 1
Optical Power Budget with 200 μm ber OPB200 13.0 20 dB HFBR-14x2Z/24x2Z
NA = 0.37
Note 1
Data Rate DC 5 MBaud Note 2
Propagation Delay LOW to HIGH tPLH 72 ns
TA = +25°C
PR = –21 dBm peak
Fiber cable length
= 1 m
Figures
6, 7, 8
Propagation Delay HIGH to LOW tPHL 46 ns
System Pulse Width Distortion tPLH – tPHL 26 ns
Bit Error Rate BER 10-9 Data rate < 5 MBaud
PR > –24 dBm peak
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
- 11 -
HFBR-14xxZ and HFBR-24xxZ Series Data Sheet
5 MBaud Logic Link Design
The resistor R1 is the only signicant 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 ber
attenuation, for correct power budget calculation, make sure you take into account the eect of bending, humidity, ambient
temperature, aging and other relevant inuences. All these additional losses reduce the achievable link distance accordingly.
For calculating the LED's aging eect, 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:
Figure 2. Typical Circuit Conguration
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 eects such as aging were taken into account. The additional losses and the individual safety buer values
should be added separately. These diagrams reect 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.
Maximum distance required = 2000 meters by using HFBR-14x4Z/24x2Z logic link with 62.5/125 μm ber.
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 conguration (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 ber attenuation of 3.2 dB/km and the reduced driver current of 43 mA, the minimum optical output power at
ber 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.
-
=I
VV
R
F
FCC
1
+5 V SELECT R1 TO SET IF
R1
IF
1 K
DATA IN
½ 75451
2
6
7
3
T
HFBR - 14xxZ
TRANSMITTER
TRANSMISSION
DISTANCE =
HFBR - 24x 2Z
RECEIVER
R
TTL DATA OUT
2
6
7 & 3
RL
VCC
0.1 µF
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.
Broadcom
- 12 -
HFBR-14xxZ and HFBR-24xxZ Series Data Sheet
55
-22 -21 -20 -19 -18 -17 -16 -15 -14 -13 -12
PR – RECEIVER POWER – dBm
tD – NRZ DISTORTION – ns
50
45
40
35
30
25
20
75
-22 -21 -20 -19 -18 -17 -16 -15 -14 -13 -12
PR – RECEIVER POWER – dBm
tPLH OR tPHL - PROPOGATION DELAY –ns
70
65
60
55
50
45
40
35
30
25
20
tPLH (TYP) @ 25°C
tPHL (TYP) @ 25°C
0
10
20
30
40
50
60
70
80
90
100
0 1 2 3 4
Typical Transmitter current (mA)
Fiber Length (km)
(Fiber Attenuation: 3.2 dB/km)
OVERDRIVE
Worst Case
TYPICAL, 25°C
0
10
20
30
40
50
60
70
80
90
100
01234
Typical Transmitter current (mA)
Fiber Length (km)
(Fiber Attenuation: 2.7 dB/km)
Worst Case
TYPICAL, 25°C
0
10
20
30
40
50
60
70
80
90
100
01234
Typical Transmitter current (mA)
Fiber Length (km)
(Fiber Attenuation: 4 dB/km)
OVERDRIVE
Worst Case
TYPICAL, 25°C
Figure 5: Typical HFBR-14x4xZ/HFBR-24x2xZ Link with
50/125 μm Fiber
Figure 6: Typical Propagation Delay Times of Link (HFBR-14x4Z/
HFBR-24x2Z) measured at TA=25°C, 5 MBaud, and with 1m of Cable
Figure 4: Typical HFBR-14x4xZ/HFBR-24x2xZ Link with
62.5/125 μm Fiber
Figure 3: Typical HFBR-14x4xZ/HFBR-24x2xZ Link with
100/140 μm Fiber
Figure 7: Typical Pulse Width Distortion of Link (HFBR-14x4Z/HF-
BR-24x2Z) measured at TA=25°C, 5 MBaud, and with 1m of Cable
Broadcom
- 13 -
HFBR-14xxZ and HFBR-24xxZ Series Data Sheet
Figure 8: System Propagation Delay Test Circuit and Waveform Timing Denitions
PULSE
GEN
½ 75451 1N4150
+15V
RS
2, 6, 7
RESISTOR VALUE AS NEEDED FOR
SETTING OPTICAL POWER OUTPUT
FROM RECEIVER END OF TEST CABLE
3
TRANSMITTER
PT - FROM 1-METER
TEST CABLE
INPUT (I F)
2
6
7 & 3
+VO
15 pF
RL
+5 V
560
0.1 µF
OUTPUT
TIMING
ANALYSIS
EQUIPMENT
eg. SCOPE
HFBR-2412Z RECEIVER
INPUT
IF
PT
VO
50%
50%
tPHL
MAX
5V
1.5V
0
tPHLT
100 ns
tPHL
MIN
PULSE REPETITION
FREQ = 1 MHz
100 ns
tPHLT
tPHL
MAX
tPHL
MIN
RS
155 MBaud Link (HFBR-14x4Z/24x6Z)
Typical Link Performance
Parameter Symbol Min. Typ. [1, 2] Max. Unit Conditions Reference
Optical Power Budget with
50/125 μm ber
OPB50 13.9 dB NA = 0.2 Note 2
Optical Power Budget
with 62.5/125 μm ber
OPB62 17.7 dB NA = 0.27
Optical Power Budget
with 100/140 μm ber
OPB100 17.7 dB NA = 0.30
Optical Power Budget
with 200 μm PCS ber
OPB200 22.0 dB NA = 0.35
Data Format 20% to 80% Duty
Factor
20 160 MBaud
System Pulse Width
Distortion
|tPLH − tPHL|1 ns PR = –7 dBm peak 1 m
62.5/125 μm ber
Bit Error Rate BER 10-9 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 bers that have less optical loss.
Broadcom
- 14 -
HFBR-14xxZ and HFBR-24xxZ Series Data Sheet
HFBR-14x2Z/14x4Z/14x5Z Low-Cost High-Speed Transmitters
Housed Product
Regulatory Compliance - Targeted Specications
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
Parameter Symbol Min. Max. Unit Reference
Storage Temperature TS–55 +85 °C
Operating Temperature TA–40 +85 °C
Lead Soldering Cycle
Temp
Time
+260
10
°C
sec
Forward Input Current
Peak
dc
IFPK
IFdc
200
100
mA
mA
Note 3
Reverse Input Voltage VBR 1.8 V
0.3 V Note 4
Notes:
1. ESD capability for all pins HBM (Human Body Model) according JEDEC JESD22-A114.
2. Valid for not protection improved transmitter option
3. For IFPK > 100 mA, the time duration should not exceed 2 ns.
4. Only valid for HFBR-141xPxZ (Protection improved option).
ANODE
CATHODE
2, 6, 7
3
PIN
11
2
32
41
51
6
72
81
FUNCTION
NC
ANODE
CATHODE
NC
NC
ANODE
ANODE
NC
4
3
2
1
5
6
7
8
PIN 1 INDICATOR
BOTTOM VIEW
NOTES:
1. PINS 1, 4, 5, AND 8 ARE ELECTRICALLY CONNECTED.
2. PINS 2, 6, AND 7 ARE ELECTRICALLY CONNECTED TO THE HEADER.
Note: Parameters “reverse input voltage” and “diode capaci-
tance” for “HFBR-141xPxZ” transmitters deviate from the non
P-parts.
Consistent coupling eciency is assured by the double-lens
optical system (Figure 1 on page 9). Power coupled into any of
the three ber types varies less than 5 dB from part to part at
a given drive current and temperature. Consistent coupling ef-
ciency reduces receiver dynamic range requirements, which
allows for longer link lengths.
Description
The HFBR-14xxZ ber optic transmitter contains an 820 nm
AlGaAs emitter capable of eciently launching optical power
into four dierent optical ber sizes: 50/125 µm, 62.5/125 μm,
100/140 μm, and 200 μm Plastic-Clad Silica (PCS). This allows
the designer exibility in choosing the ber size. The HFBR-
14xxZ is designed to operate with the Broadcom Ltd. HFBR-
24xxZ ber optic receivers.
The HFBR-14xxZ transmitter’s high coupling eciency al-
lows 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 opti-
mized for small size ber and typically can launch -15.8 dBm
optical power at 60 mA into 50/125 μm ber and -12 dBm
into 62.5/125 μm ber. The HFBR-14x2Z standard transmitter
typically can launch -12 dBm of optical power at 60 mA into
100/140 μm ber cable. It is ideal for large size ber such as
100/140 μm. The high launched optical power level is useful
for systems where star couplers, taps, or inline connectors cre-
ate large xed losses.
For 820 nm Miniature Link transmitters with protection im-
proved option “P” a Zener diode parallel to the LED was imple-
mented. Therefore, a higher ESD capability could be attained.
Broadcom
- 15 -
HFBR-14xxZ and HFBR-24xxZ Series Data Sheet
Electrical/Optical Specications
–40°C to +85°C unless otherwise specied.
Parameter Symbol Min. Typ. [2] Max. Unit Conditions Reference
Forward Voltage VF1.48 1.70 2.09 V IF = 60 mA dc Figure 9
1.84 IF = 100 mA dc
Forward Voltage Temperature
Coecient
ΔVF/ΔT –0.22 mV/K IF = 60 mA dc Figure 9
–0.18 IF = 100 mA dc
Reverse Input Voltage VBR 1.8 3.8 V IF = –100 μA dc
0.3 0.7 V IF = –100 μA dc Note 10
Peak Emission Wavelength lP792 820 865 nm
Diode Capacitance CT55 pF V = 0, f = 1 MHz
70 pF V = 0, f = 1 MHz Note 10
Optical Power Temperature
Coecient
ΔPT/ΔT –0.006 dB/K I = 60 mA dc
–0.010 I = 100 mA dc
Thermal Resistance ΘJA 490 K/W Notes 3, 8
14x2Z Numerical Aperture NA 0.49
14x4Z Numerical Aperture NA 0.31
14x2Z Optical Port Diameter D 290 μm Note 4
14x4Z Optical Port Diameter D 150 μm Note 4
HFBR-14x2Z Output Power Measured Out of 1 Meter of Cable
Parameter Symbol Min. Typ. Max. Unit Conditions Reference
50/125 μm Fiber Cable PT50 –21.8 –18.8 –16.8 dBm peak TA = +25°C, IF = 60 mA Notes 5, 6, 9
Figure 10
–22.8 –15.8 dBm peak TA = –40°C to +85°C, IF = 60 mA
–20.3 –16.8 –14.4 dBm peak TA = +25°C, IF = 100 mA
–21.9 –13.8 dBm peak TA = –40°C to +85°C, IF = 100 mA
62.5/125 μm Fiber Cable PT62 –19.0 –16.0 –14.0 dBm peak TA = +25°C, IF = 60 mA
–20.0 –13.0 dBm peak TA = –40°C to +85°C, IF = 60 mA
–17.5 –14.0 –11.6 dBm peak TA = +25°C, IF = 100 mA
–19.1 –11.0 dBm peak TA = –40°C to +85°C, IF = 100 mA
100/140 μm Fiber Cable PT100 –15.0 –12.0 –10 dBm peak TA = +25°C, IF = 60 mA
–16.0 –9.0 dBm peak TA = –40°C to +85°C, IF = 60 mA
–13.5 –10.0 –7.6 dBm peak TA = +25°C, IF = 100 mA
–15.1 –7.0 dBm peak TA = –40°C to +85°C, IF = 100 mA
200 μm PCS Fiber Cable PT200 –10.0 –7.0 –5.0 dBm peak TA = +25°C, IF = 60 mA
–11.0 –4.0 dBm peak TA = –40°C to +85°C, IF = 60 mA
–8.5 –5.0 –2.6 dBm peak TA = +25°C, IF = 100 mA
–10.1 –2.0 dBm peak TA = –40°C to +85°C, IF = 100 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
- 16 -
HFBR-14xxZ and HFBR-24xxZ Series Data Sheet
HFBR-14x4Z Output Power Measured out of 1 Meter of Cable
Parameter Symbol Min. Typ. [2] Max. Unit Conditions Reference
50/125 μm Fiber Cable
NA = 0.2
PT50 –18.8 –15.8 –13.8 dBm peak TA = +25°C, IF = 60 mA Notes 5, 6, 9
Figure 10
–19.8 –12.8 dBm peak TA = –40°C to +85°C, IF = 60 mA
–17.3 –13.8 –11.4 dBm peak TA = +25°C, IF = 100 mA
–18.9 –10.8 dBm peak TA = –40°C to +85°C, IF = 100 mA
62.5/125 μm Fiber Cable
NA = 0.275
PT62 –15.0 –12.0 –10.0 dBm peak TA = +25°C, IF = 60 mA
–16.0 –9.0 dBm peak TA = –40°C to +85°C, IF = 60 mA
–13.5 –10.0 –7.6 dBm peak TA = +25°C, IF = 100 mA
–15.1 –7.0 dBm peak TA = –40°C to +85°C, IF = 100 mA
100/140 μm Fiber Cable
NA = 0.3
PT100 –11.5 –8.5 –6.5 dBm peak TA = +25°C, IF = 60 mA
–12.5 –5.5 dBm peak TA = –40°C to +85°C, IF = 60 mA
–10.0 –6.5 –4.1 dBm peak TA = +25°C, IF = 100 mA
–11.6 –3.5 dBm peak TA = –40°C to +85°C, IF = 100 mA
200 μm PCS Fiber Cable
NA = 0.37
PT200 –7.5 –4.5 –2.5 dBm peak TA = +25°C, IF = 60 mA
–8.5 –1.5 dBm peak TA = –40°C to +85°C, IF = 60 mA
–6.0 –2.5 –0.1 dBm peak TA = +25°C, IF = 100 mA
–7.6 0.5 dBm peak TA = –40°C to +85°C, IF = 100 mA
HFBR-14x5Z Output Power Measured out of 1 Meter of Cable
Parameter Symbol Min. Typ. Max. Unit Conditions Reference
50/125 μm Fiber Cable
NA = 0.2
PT50 –16.5 –14.3 –11.5 dBm peak TA = +25°C, IF = 60 mA Notes 5, 6, 9
Figure 10
–17.5 –10.5 dBm peak TA = –40°C to 85°C, IF = 60 mA
62.5/125 μm Fiber Cable
NA = 0.275
PT62 –12.0 –10.5 –8.0 dBm peak TA = +25°C, IF = 60 mA
–13.0 –7.0 dBm peak TA = –40°C to 85°C, IF = 60 mA
200 μm Fiber Cable
NA = 0.37
PT200 –6.0 –3.6 0.0 dBm peak TA = +25°C, IF = 60 mA
–7.0 1.0 dBm peak TA = –40°C to 85°C, IF = 60 mA
14x2Z/14x4Z/14x5Z Dynamic Characteristics
Parameter Symbol Min. Typ. [2] Max. Unit Conditions Reference
Rise Time, Fall Time
(10% to 90%)
tr, tf4.0 6.5 ns
No pre-bias
IF = 60 mA
Figure 11
Note 7
Rise Time, Fall Time
(10% to 90%)
tr, tf3.0 ns IF = 10 to 100 mA Figure 12
Pulse Width Distortion PWD 0.5 ns 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 ber face and denes 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-
141xZ, 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 ber, using the far-eld pattern. NA is dened as the sine of the half angle, determined at 5% of
the peak intensity point. When using other manufacturer’s ber cable, results will vary due to diering NA values and specication methods.
10. Only valid for HFBR-141xPxZ (Protection improved option).
Broadcom
- 17 -
HFBR-14xxZ and HFBR-24xxZ Series Data Sheet
All HFBR-14XXZ LED transmitters are classied as IEC 825-1 Accessible Emission Limit (AEL) Class 1 based upon the current
proposed draft scheduled to go in to eect 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.
Figure 9: Typical Forward Voltage and Current Characteristics Figure 10: Normalized Typical Transmitter Output vs.
Forward Current
10
20
30
40
50
60
70
80
90
100
1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2 2.1 2.2
FORWARD CURRENT (mA)
FORWARD VOLTAGE (V)
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
0 10 20 30 40 50 60 70 80 90 100
P(If) -P(60mA) - RELATIVE POWER RATIO
FORWARD CURRENT (mA)
P(If) - P(60 mA) RELATIVE POWER RATIO (dB)
2.0
3.0
0
-7.0
-4.0
0.8
-1.0
85°C
25°C
-40°C
Broadcom
- 18 -
HFBR-14xxZ and HFBR-24xxZ Series Data Sheet
Figure 12: Test Circuit for Measuring tr, tf
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.
Transmitter R1 R2 R3 C3
HFBR-14x2Z/x4Z/x5Z 33Ω 33Ω 270Ω 75 pF
Data
74ACT[Q]00MTC
GND
GND
TXVCC = 5.0V
GND GND
HFBR-14x2Z/x4Z/x5Z
AN2
2
AN7
7
CAT
3
1
AN6
6
4
5
8
1
23
IC1A
4
56
IC1B
9
10 8
IC1C
12
13 11
IC1D
R3
R1
R2
C3
C1 C2
LL
Tx
10 µF 100 nF
Figure 11: Recommended Drive Circuit
Agilent 81130A
PULSE/PATTERN
GENERATOR GND OUT
O/E CONVERTER
Silicon PIN photo diode
(50Ω terminated)
SMA measuring cable (50Ω)
HIGH SPEED
OSCILLOSCOPE
(50Ω terminated)
Recommended Transmitter Driver Circuitry
Broadcom
- 19 -
HFBR-14xxZ and HFBR-24xxZ Series Data Sheet
HFBR-24x2Z Low-Cost 5 MBaud Receiver
Description
The HFBR-24x2Z ber optic receiver is designed to operate with the Broadcom Ltd. HFBR-14xxZ ber optic transmitter and
50/125 µm, 62.5/125 µm, 100/140 µm, and 200 µm Plastic-Clad Silica (PCS) ber optic cable. Consistent coupling into the receiver
is assured by the lensed optical system (Figure 1). Response does not vary with ber size ≤ 0.100 µm.
The HFBR-24x2Z receiver incorporates an integrated photo IC containing a photodetector and dc amplier driving an open-
collector 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 congurations. 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.
Absolute Maximum Ratings
Parameter Symbol Min. Max. Unit Reference
Storage Temperature TS–55 +85 °C
Operating Temperature TA–40 +85 °C
Lead Soldering Cycle
Temp
Time
+260
10
°C
sec
Note 1
Supply Voltage VCC –0.5 +7.0 V
Output Current IO25 mA
Output Voltage VO–0.5 +18.0 V
Output Collector Power Dissipation PO AV 40 mW
Fan Out (TTL) N 5 Note 2
Notes:
1. 2.0 mm from where leads enter case.
2. 8 mA load (5 x 1.6 mA), RL = 560Ω.
Housed Product
Vcc
DATA
COMMON
2
6
7 & 3
45
6
7
8
3
2
1
PI N
11
2
32
41
51
6
72
81
FUNCTION
NC
VCC (5V)
COMMON
NC
NC
DATA
COMMON
NC
PIN 1 INDICATOR
BOTTOM VIEW
NOTES:
1. PINS 1, 4, 5, AND 8 ARE ELECTRICALLY CONNECTED.
2. PINS 3 AND 7 ARE ELECTRICALLY CONNECTED TO THE HEADER.
Broadcom
- 20 -
HFBR-14xxZ and HFBR-24xxZ Series Data Sheet
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 compo-
nents to prevent damage and/or degradation which may be induced by ESD.
Electrical/Optical Characteristics
–40°C to + 85°C unless otherwise specied. Fiber sizes with core diameter ≤ 100 µm and N/A ≤ 0.35, 4.75V ≤ VCC ≤ 5.25V.
Parameter Symbol Min. Typ. [3] Max. Unit Conditions Reference
High Level Output Current IOH 5 250 μA VO = 18, PR < –40 dBm
Low Level Output Voltage VOL 0.4 0.5 V IO = 8 m, PR > –24 dBm
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 Note 4
Dynamic Characteristics
–40°C to + 85°C unless otherwise specied; 4.75V ≤ VCC ≤ 5.25V; BER ≤ 10-9
Parameter Symbol Min. Typ. [3] Max. Unit Conditions Reference
Peak Optical Input Power Logic Level
HIGH
PRH –40
0.1
dBm peak
μW peak
λP = 820 nm Note 5
Peak Optical Input Power Logic Level
LOW
PRL –25.4
2.9
–9.2
120
dBm peak
μW peak
TA = +25°C,
IOL = 8 mA
Note 5
–24.0
4.0
–10.0
100
dBm peak
μW peak
TA = –40°C to +85°C,
IOL = 8 mA
Propagation Delay LOW to HIGH tPLHR 65 ns TA = +25°C,
PR = –21 dBm,
Data Rate = 5 MBaud
Note 6
Propagation Delay HIGH to LOW tPHLR 49 ns
Notes:
1. 2.0 mm from where leads enter case.
2. 8 mA load (5 x 1.6 mA), RL = 560Ω.
3. Typical data at TA = +25°C, VCC = 5.0VDC.
4. D is the eective diameter of the detector image on the plane of the ber face. The numerical value is the product of the actual detector diameter and the lens
magnication.
5. Measured at the end of 100/140 μm ber 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 eects
and of transmission-time eects. Because of this, the data-rate limit of the system must be described in terms of time dierentials 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 aected by increasing cable length if the optical power level at the receiver is maintained.
Broadcom
- 21 -
HFBR-14xxZ and HFBR-24xxZ Series Data Sheet
HFBR-24x6Z Low-Cost 125 MHz Receiver
Description
The HFBR-24x6Z ber optic receiver is designed to operate with the Broadcom Ltd. HFBR-14xxZ ber optic transmitters and
50/125 µm, 62.5/125 µm, 100/140 µm, and 200 µm Plastic-Clad Silica (PCS) ber optic cable. Consistent coupling into the receiver
is assured by the lensed optical system (Figure 1). Response does not vary with ber 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-o 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 preamplier integrated circuit. The HFBR-
24x6Z receives an optical signal and converts it to an analog voltage. The output is a buered 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 ltered to protect the receiver from noisy host systems. Refer to AN 1065 for details.
Housed Product
Figure 13: Simplied 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 compo-
nents to prevent damage and/or degradation which may be induced by ESD.
Vcc
ANALOG SIGNAL
VEE
2
6
3 & 7
45
6
7
8
3
2
1
PIN
11
2
32
41
51
6
72
81
FUNCTION
NC
SIGNAL
VEE
NC
NC
VCC
VEE
NC
PIN 1 INDICATOR
BOTTOM VIEW
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.
BIAS & FILTER
CIRCUITS VCC
VOUT
VEE
6
2
3, 7
POSITIVE
SUPPLY
ANALOG
SIGNAL
NEGATIVE
SUPPLY
5.0
mA
300 pF
Broadcom
- 22 -
HFBR-14xxZ and HFBR-24xxZ Series Data Sheet
Absolute Maximum Ratings
Parameter Symbol Min. Max. Unit Reference
Storage Temperature TS–55 +85 °C
Operating Temperature TA–40 +85 °C
Lead Soldering Cycle
Temp
Time
+260
10
°C
sec
Note 1
Supply Voltage VCC –0.5 +6.0 V
Output Current IO25 mA
Signal Pin Voltage VSIG –0.5 VCC V
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 specied.
Parameter Symbol Min. Typ. [2] Max. Unit Conditions
Reference
Responsivity RP5.3 7 9.6 mV/μW TA = +25°C at 820 nm, 50 MHz Note 3, 4
Figure 18
4.5 11.5 mV/μW TA= −40°C to +85°C at 820nm,
50MHz
RMS Output Noise Voltage VNO 0.40 0.59 mV Bandwidth ltered at 75 MHz
PR = 0 μW
Note 5
Figure 15
0.70 mV Unltered bandwidth
PR = 0 μW
Equivalent Input Optical
Noise Power (RMS)
PN –43.0
0.050
–41.4
0.065
dBm
μW
Bandwidth ltered at 75 MHz
Optical Input Power
(Overdrive)
PR–7.6
175
dBm
peak
μW peak
TA = +25°C Note 6
Figure 16
–8.2
150
dBm
peak
μW peak
TA = –40°C to +85°C
Output Impedance ZO30 Ω Test Frequency = 50 MHz
dc Output Voltage VO dc Vcc – 4.2 Vcc – 3.1 Vcc – 2.4 V PR = 0 μW
Power Supply Current IEE 9 15 mA RLOAD = 510Ω
Equivalent NA NA 0.35
Equivalent Diameter D 324 μm Note 7
CAUTION: The small junction sizes inherent to the design of these components increase the components’ susceptibility to damage
from electrostatic discharge (ESD). It is advised that normal static precautions be taken in handling and assembly of these compo-
nents to prevent damage and/or degradation which may be induced by ESD.
Broadcom
- 23 -
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 specied
Parameter Symbol Min. Typ. [2] Max. Unit Conditions Reference
Rise/Fall Time 10% to 90% tr, tf3.3 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
Overshoot 2 % PR = 5 μW peak,
tr = 1.5 ns
Note 9
Bandwidth (Electrical) BW 125 MHz –3 dB Electrical
Bandwidth - Rise Time Product 0.41 Hz × s Note 10
Notes:
1. 2.0 mm from where leads enter case.
2. Typical specications are for operation at TA = +25°C and VCC = +5V DC.
3. For 200 µm PCS bers, typical responsivity will be 6 mV/mW. Other parameters will change as well.
4. Pin #2 should be ac coupled to a load 510Ω. Load capacitance must be less than 5 pF.
5. Measured with a 3 pole Bessel lter with a 75 MHz, –3 dB bandwidth.
6. Overdrive is dened at PWD = 2.5 ns.
7. D is the eective diameter of the detector image on the plane of the ber face. The numerical value is the product of the actual detector diameter and the lens
magnication.
8. Measured with a 10 ns pulse width, 50% duty cycle, at the 50% amplitude point of the waveform.
9. Percent overshoot is dened as:
10. The conversion factor for the rise time to bandwidth is 0.41 since the HFBR-24x6Z has a second order bandwidth limiting characteristic.
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 compo-
nents to prevent damage and/or degradation which may be induced by ESD.
Figure 14: Recommended AC-Coupled Receiver Circuit
100%
x
V
VV
100%
100%PK
(–)
0.1 µF
LOGIC
OUTPUT
+5V
10Ω
30 pF
R
LOADS
500Ω MIN.
6
2
3 & 7
POST
AMP
Broadcom
- 24 -
HFBR-14xxZ and HFBR-24xxZ Series Data Sheet
150
0 50 100 150 200 250
FREQUENCY – MHz
125
100
75
50
25
0
300
SPECTRAL NOISE DENSITY – nV/ H
Z
3.0
0 20 30 40 50 70
P
R
– INPUT OPTICAL POWER – µW
2.5
2.0
1.5
1.0
0.5
0
80
PWD – PULSE WIDTH DISTORTION – ns
10 60
6.0
-60 -40 -20 0 20 40
TEMPERATURE – °C
5.0
4.0
3.0
2.0
1.0
60
t
r
, t
f
– RESPONSE TIME – ns
80 100
t
f
t
r
1.25
400 480 560 640 720 800
λ – WAVELENGTH – nm
1.00
0.75
0
880
NORMALIZED RESPONSE
0.50
0.25
960 1040
Figure 15: Typical Spectral Noise Density vs. Frequency Figure 16: Typical Pulse Width Distortion vs. Peak Input Power
Figure 17: Typical Rise and Fall Times vs. Temperature Figure 18: Typical Receiver Spectral Response Normalized to
820 nm
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www.broadcom.com.
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Broadcom Proprietary and Condential. Copyright © 2017–2019 Broadcom. All Rights Reserved. The term
“Broadcom” refers to Broadcom Inc. 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
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license under its patent rights nor the rights of others.
AV02-0176EN – February 15, 2019