BROADCOM HFBR1412TZ 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

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

- 1 -

HFBR-14xxZ and HFBR-24xxZ Series Data Sheet

Part Number Guide

A/HFBR - x 4 x x

1 Transmitter

2 Receiver

4 820 nm Transmitter and

Receiver products

0 SMA, housed

1 ST, housed

2 FC, housed

E SC, housed

aa

Z

RoHS Compliant

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-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.

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)

DC to 5 1500 HFBR-14x2Z HFBR-24x2Z 62.5/125 HFBR-0410Z

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.

1

20 2700 HFBR-14x4Z/14x5Z HFBR-24x6Z 62.5/125 HFBR-0416Z

Distance (m) Transmitter Receiver Fiber Size (μm) Evaluation Kit

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

 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

- 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 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.

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 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

- 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 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.

Broadcom

- 5 -

HFBR-14xxZ and HFBR-24xxZ Series Data Sheet

Mechanical Dimensions (SMA Port)

HFBR-x40xZ

1/4 - 36 UNS 2A THREAD

12.7

(0.50)

AVAGO

ORIGIN

COUNTRY OF

12.7

(0.50)

HFBR-x40xZ

TX/RX YYWW

22.2

(0.87)

6.35

(0.25)

6.4
DIA.

(0.25)

3.81

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)

(0.15)

2.54

(0.10)

524

3

6

7

8

1

PIN NO. 1
INDICATOR

Dimensions in mm (inches)

Mechanical Dimensions (ST Port)

HFBR-x41xZ

4.9
max.

(0.193)

12.7

(0.50)

AVAGO

ORIGIN

COUNTRY OF

12.7

(0.50)

HFBR-x41xZ

TX/RX YYWW

27.2
(1.07)

3.6

(0.14)

8.2

(0.32)

1.27

(0.05)

2.54

(0.10)

5.1

(0.20)

6.35

(0.25)

10.2

(0.40)

3.81

(0.15)

PINS 1,4,5,8

0.51 X 0.38
(0.020 X 0.015)

2.54

(0.10)

524

3

6

7

PINS 2,3,6,7

0.46

Ø

(0.018)

1

8

PIN NO. 1
INDICATOR

Dimensions in mm (inches)

7.0

(0.28)

DIA.

3.6

(0.14)

1.27

(0.05)

2.54

(0.10)

Broadcom

- 6 -

5.1

(0.20)

10.2

(0.40)

HFBR-14xxZ and HFBR-24xxZ Series Data Sheet

INDICATOR

Mechanical Dimensions (Metal ST Port)

HFBR-x41xMZ

4.9
MAX.

(0.193)

12.7

(0.50)

AVAGO

ORIGIN

COUNTRY OF

HFBR-x41xMZ

TX/RX YYWW

27.2

(1.07)

12.7

(0.50)

8.4

(0.33)

6.35

(0.25)

7.0

3.81

(0.15)

PINS 1,4,5,8

0.51 × 0.38

(0.020 × 0.015)

PINS 2,3,6,7

0.46 DIA.

(0.018) DIA.

DIA.

(0.28)

2.54

(0.10)

524

3

6

7

8

1

PIN NO. 1

3.6

(0.14)

INDICATOR

Dimensions in mm (inches)

Mechanical Dimensions (Threaded ST Port)

HFBR-x41xTZ

5.1

12.7

(0.50)

AVAGO

ORIGIN

COUNTRY OF

12.7

(0.50)

(0.20)

HFBR-x41xTZ

TX/RX YYWW

27.2

(1.07)

4.9

(0.193)

MAX.

7.6

(0.30)

8.4

(0.33)

1.27

(0.05)

2.54

(0.10)

5.1

(0.20)

6.35

(0.25)

10.2

(0.40)

3.81

PINS 1,4,5,8

× 0.38

0.51

× 0.015)

(0.020

PINS 2,3,6,7

0.46
DIA.

(0.018)

(0.15)

2.54

(0.10)

524

3

6
7

8

1

PIN NO. 1

Dimensions in mm (inches)

DIA.

7.1

(0.28)

3/8 - 32 UNEF - 2A

DIA.

3.6

(0.14)

1.27

(0.05)

2.54

(0.10)

Broadcom

- 7 -

5.1

(0.20)

10.2

(0.40)

HFBR-14xxZ and HFBR-24xxZ Series Data Sheet

Mechanical Dimensions (FC Port)

HFBR-x42xZ

M8 x 0.75 6G
THREAD (METRIC)

12.7

(0.50)

AVAGO

ORIGIN

COUNTRY OF

12.7

(0.50)

HFBR-x42xZ

TX/RX YYWW

19.6

(0.77)

3.81

(0.15)

7.9

(0.31)

2.54

(0.10)

524

3

PINS 1,4,5,8

6

0.51 X 0.38

(0.020 X 0.015)

3.6

(0.14)

7

0.46

Ø

(0.018)

2.54

(0.10)

1

8

PIN NO. 1
INDICATOR

PINS 2,3,6,7

Dimensions in mm (inches)

Mechanical Dimensions (SC Port)

HFBR-x4ExZ

AVAGO

ORIGIN

COUNTRY OF

HFBR-x4ExZ

TX/RX YYWW

28.65

(1.128)

5.1

(0.20)

10.2

(0.40)

Dimensions in mm (inches)

3.81

(0.15)

PINS 1,4,5,8

0.51 × 0.38
(0.020 × 0.015)

PINS 2,3,6,7

0.46

Ø

(0.018)

2.54

(0.10)

12.7

(0.50)

4

3

2

1

5

6

7

8

PIN NO. 1
INDICATOR

15.95

(0.628)

Broadcom

- 8 -

10.0

(0.394)

12.7

(0.50)

3.60

(0.14)

1.27

(0.05)

2.54

(0.10)

6.35

(0.25)

5.1

(0.20)

10.38

(0.409)

HFBR-14xxZ and HFBR-24xxZ Series Data Sheet

Cross-Sectional View

LED OR DETECTOR IC

LENS–SPHERE

HOUSING

HEADER

EPOXY BACKFILL

Figure 1: HFBR-x41xTZ ST Series Cross-Sectional View

(ON TRANSMITTERS ONLY)

LENS–WINDOW

CONNECTOR PORT

Panel Mount Hardware

HFBR-4401Z: for SMA Ports HFBR-4411Z: for ST Ports

1/4 - 36 UNEF ­2B THREAD

7.87
DIA.

(0.310)

1.65

HEX-NUT

WASHER

6.61

(0.260)

DIA.

(0.065)

7.87

(0.310)

0.14

(0.005)

TYP.

DIA.

HEX-NUT

WASHER

10.41

(0.410)

(Each HFBR-4401Z and HFBR-4411Z kit consists of 100 nuts and 100 washers).

Dimensions in mm (inches)

Port Cap Hardware

3/8 - 32 UNEF ­2B THREAD

12.70
DIA.

(0.50)

MAX.

DIA.

1.65

(0.065)

14.27

(0.563)

0.46

(0.018)

TYP.

DIA.

DATE CODE

PART
NUMBER

AVAGO

ORIGIN

COUNTRY OF

WALL

HFBR-x40xZ

TX/RX YYWW

WASHER

NUT

0.2 IN.

3/8 - 32 UNEF ­2A THREADING

1 THREAD
AVAILABLE

HFBR-4402Z: 500 SMA Port Caps
HFBR-4120Z: 500 ST Port Plugs

Broadcom

- 9 -

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

Optical Power Budget with 62.5/125 μm
ber

Optical Power Budget with 100/140 μm
ber

Optical Power Budget with 200 μm ber OPB

OPB

OPB

OPB

50

4.2 9.6 dB HFBR-14x4Z/24x2Z
NA = 0.2

62.5

8.0 15 dB HFBR-14x4Z/24x2Z
NA = 0.27

100

8.0 15 dB HFBR-14x2Z/24x2Z
NA = 0.30

13.0 20 dB HFBR-14x2Z/24x2Z

200

Note 1

Note 1

Note 1

Note 1

NA = 0.37

Data Rate DC 5 MBaud Note 2

Propagation Delay LOW to HIGH t

PLH

72 ns

TA = +25°C

Propagation Delay HIGH to LOW t

System Pulse Width Distortion t

PLH

PHL

– t

PHL

Bit Error Rate BER 10

46 ns

26 ns

-9

PR = –21 dBm peak
Fiber cable length
= 1 m

Data rate < 5 MBaud

Figures
6, 7, 8

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

- 10 -

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 V
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:

-

FCC

R

1

=

VV

F

I

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.

could be neglected. The

port

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.

Figure 2. Typical Circuit Conguration

2

6

7 & 3

TTL DATA OUT

R

L

V

0.1 µF

CC

SELECT R

+5 V

1 K

DATA I N

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.

1

R

1

½ 75451

TO SET I

F

I

HFBR - 14x xZ
TRANSMITTER

F

2
6

T

7
3

TRANSMISSION

DISTANCE =

HFBR - 24x 2Z

RECEIVER

R

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.

Broadcom

- 11 -

HFBR-14xxZ and HFBR-24xxZ Series Data Sheet

Figure 3: Typical HFBR-14x4xZ/HFBR-24x2xZ Link with
100/140 μm Fiber

100

90

80

70

60

OVERDRIVE
Worst Case

TYPICAL, 25°C

50

40

30

20

Typical Transmitter current (mA)

10

0

0 1 2 3 4

Fiber Length (km)

(Fiber Attenuation: 4 dB/km)

Figure 5: Typical HFBR-14x4xZ/HFBR-24x2xZ Link with
50/125 μm Fiber

100

90

80

Worst Case
TYPICAL, 25°C

70

60

50

40

30

20

Typical Transmitter current (mA)

10

0

0 1 2 3 4

Fiber Length (km)

(Fiber Attenuation: 2.7 dB/km)

Figure 4: Typical HFBR-14x4xZ/HFBR-24x2xZ Link with

62.5/125 μm Fiber

100

90

80

70

60

OVERDRIVE

Worst Case

TYPICAL, 25°C

50

40

30

20

Typical Transmitter current (mA)

10

0

0 1 2 3 4

Fiber Length (km)

(Fiber Attenuation: 3.2 dB/km)

Figure 6: Typical Propagation Delay Times of Link (HFBR-14x4Z/
HFBR-24x2Z) measured at TA=25°C, 5 MBaud, and with 1m of Cable

75

70

65

60

55

50

45

- PROPOGATION DELAY –ns
PHL

40

OR t

35

PLH

t

30

25

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

Broadcom

Figure 7: Typical Pulse Width Distortion of Link (HFBR-14x4Z/HF­BR-24x2Z) measured at TA=25°C, 5 MBaud, and with 1m of Cable

55

50

45

40

35

– NRZ DISTORTION – ns

30

D

t

25

20

-22 -21 -20 -19 -18 -17 -16 -15 -14 -13 -12

PR – RECEIVER POWER – dBm

- 12 -

HFBR-14xxZ and HFBR-24xxZ Series Data Sheet

Figure 8: System Propagation Delay Test Circuit and Waveform Timing Denitions

PULSE

GEN

½ 75451

PT -

HFBR-2412Z RECEIVER

+15V

R

S

1N4150

2, 6, 7

R

S

FROM 1-METER

TEST CABLE

3

TRANSMITTER

RESISTOR VALUE AS NEEDED FOR
SETTING OPTICAL POWER OUTPUT
FROM RECEIVER END OF TEST CABLE

INPUT (IF)

+5 V

R

2

6

7 & 3

L

0.1 µF

560

15 pF

155 MBaud Link (HFBR-14x4Z/24x6Z)

Typical Link Performance

Parameter Symbol Min. Typ.

Optical Power Budget with
50/125 μm ber

Optical Power Budget
with 62.5/125 μm ber

Optical Power Budget
with 100/140 μm ber

Optical Power Budget
with 200 μm PCS ber

Data Format 20% to 80% Duty
Factor

OPB

OPB

OPB

OPB

50

62

100

200

20 160 MBaud

OUTPUT

+

[1, 2]

PULSE REPETITION
FREQ = 1 MHz

t

PHL

MIN

V

ANALYSIS

EQUIPMENT

eg. SCOPE

O

TIMING

INPUT

I

F

P

V

O

100 ns

50%

t

PHLT

50%

T

t

PHL

MAX

5V

1.5V
0

Max. Unit Conditions Reference

100 ns

t

PHLT

t

PHL

MAX

13.9 dB NA = 0.2 Note 2

17.7 dB NA = 0.27

17.7 dB NA = 0.30

22.0 dB NA = 0.35

MIN

t

PHL

System Pulse Width
Distortion

|t

− t

PHL

|

PLH

Bit Error Rate BER 10

1 ns PR = –7 dBm peak 1 m

62.5/125 μm ber

-9

Data rate < 100 MBaud

Note 2

PR > –31 dBm peak

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

- 13 -

HFBR-14xxZ and HFBR-24xxZ Series Data Sheet

HFBR-14x2Z/14x4Z/14x5Z Low-Cost High-Speed Transmitters

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 HFBR­14xxZ is designed to operate with the Broadcom Ltd. HFBR­24xxZ ber optic receivers.

The HFBR-14xxZ transmitter’s high coupling eciency 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 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 cre­ate large xed losses.

Note: Parameters “reverse input voltage” and “diode capaci­tance” 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.

Housed Product

PIN

FUNCTION

ANODE

CATHODE

2, 6, 7

3

4

5

3

6

2

7

1

8

1

1

NC

2

ANODE

2

3

CATHODE

1

4

NC

1

5

NC

6

ANODE

2

7

ANODE

1

8

NC

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.

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.

PIN 1 INDICATOR

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 T

Operating Temperature T

S

A

Lead Soldering Cycle
Temp
Time

Forward Input Current
Peak
dc

I

I

FPK

Fdc

Reverse Input Voltage VBR 1.8 V

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 I

4. Only valid for HFBR-141xPxZ (Protection improved option).

> 100 mA, the time duration should not exceed 2 ns.

FPK

–55 +85 °C

–40 +85 °C

+260

10

200
100

°C

sec

mA
mA

0.3 V Note 4

Note 3

Broadcom

- 14 -

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.

Forward Voltage V

Forward Voltage Temperature

F

ΔVF/ΔT –0.22 mV/K IF = 60 mA dc Figure 9

Coecient

Reverse Input Voltage V

Peak Emission Wavelength l

Diode Capacitance C

Optical Power Temperature

BR

P

T

ΔPT/ΔT –0.006 dB/K I = 60 mA dc

Coecient

Thermal Resistance Θ

JA

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

1.48 1.70 2.09 V IF = 60 mA dc Figure 9

1.8 3.8 V IF = –100 μA dc

0.3 0.7 V IF = –100 μA dc Note 10

792 820 865 nm

[2]

Max. Unit Conditions Reference

1.84 IF = 100 mA dc

–0.18 IF = 100 mA dc

55 pF V = 0, f = 1 MHz

70 pF V = 0, f = 1 MHz Note 10

–0.010 I = 100 mA dc

490 K/W Notes 3, 8

HFBR-14x2Z Output Power Measured Out of 1 Meter of Cable

Parameter Symbol Min. Typ. Max. Unit Conditions Reference

50/125 μm Fiber Cable P

62.5/125 μm Fiber Cable P

100/140 μm Fiber Cable P

200 μm PCS Fiber Cable P

T50

T62

T100

T200

–21.8 –18.8 –16.8 dBm peak TA = +25°C, IF = 60 mA Notes 5, 6, 9

–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

–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

–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

–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

Figure 10

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 -

HFBR-14xxZ and HFBR-24xxZ Series Data Sheet

HFBR-14x4Z Output Power Measured out of 1 Meter of Cable

Parameter Symbol Min. Typ.

50/125 μm Fiber Cable
NA = 0.2

P

T50

–18.8 –15.8 –13.8 dBm peak TA = +25°C, IF = 60 mA Notes 5, 6, 9

–19.8 –12.8 dBm peak TA = –40°C to +85°C, IF = 60 mA

[2]

Max. Unit Conditions Reference

–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

P

T62

–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

P

T100

–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

P

T200

–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

62.5/125 μm Fiber Cable
NA = 0.275

200 μm Fiber Cable
NA = 0.37

P

T50

–16.5 –14.3 –11.5 dBm peak TA = +25°C, IF = 60 mA Notes 5, 6, 9

–17.5 –10.5 dBm peak TA = –40°C to 85°C, IF = 60 mA

P

T62

–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

P

T200

–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

Figure 10

Figure 10

14x2Z/14x4Z/14x5Z Dynamic Characteristics

Parameter Symbol Min. Typ.

Rise Time, Fall Time
(10% to 90%)

Rise Time, Fall Time
(10% to 90%)

Pulse Width Distortion PWD 0.5 ns Figure 12

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 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-

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

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

10. Only valid for HFBR-141xPxZ (Protection improved option).

> 100 mA, the time duration should not exceed 2 ns.

FPK

141xZ, and with an SMA 905 precision ceramic ferrule for HFBR-140xZ.

resistance, the anode trace should be made as large as is consistent with good RF circuit design.

the peak intensity point. When using other manufacturer’s ber cable, results will vary due to diering NA values and specication methods.

tr, t

tr, t

f

f

[2]

Max. Unit Conditions Reference

4.0 6.5 ns
No pre-bias

IF = 60 mA
Figure 11

Note 7

3.0 ns IF = 10 to 100 mA Figure 12

Broadcom

- 16 -

HFBR-14xxZ and HFBR-24xxZ Series Data Sheet

2.0

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

100

90

80

70

60

50

40

FORWARD CURRENT (mA)

30

20

10

1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2 2.1 2.2

FORWARD VOLTAGE (V)

85°C

25°C

-

40°C

2

1.8

1.6

1.4

1.2

1

0.8

0.6

0.4

P(If) -P(60mA) - RELATIVE POWER RATIO

0.2

0

0 10 20 30 40 50 60 70 80 90 100

FORWARD CURRENT (mA)

3.0

0.8

0

-1.0

-4.0
P(If) - P(60 mA) RELATIVE POWER RATIO (dB)

-7.0

Broadcom

- 17 -

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

TXVCC = 5.0V

C1 C2

10 µF 100 nF

1

IC1A

3

C3

GND GND

HFBR-14x2Z/x4Z/x5Z
2

AN2

6

AN6

7

AN7

3

CAT

1

4

5

8

LL

Tx

2

R2

IC1B

IC1C

6

R1

GND

R3

Data

12

13

IC1D

11

4

5

9

8

10

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, t

f

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

2. PINS 3 AND 7 ARE ELECTRICALLY CONNECTED TO THE HEADER.

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 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 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.

Housed Product

2

V

cc

BOTTOM VIEW

45
3
2
1

6
7
8

6

DATA

7 & 3

COMMON

PIN 1 INDICATOR

PI N

FUNCTION

1

1

NC

2

V

(5V)

CC

2

3

COMMON

1

4

NC

1

5

NC

6

DATA

2

7

COMMON

1

8

NC

NOTES:

1. PINS 1, 4, 5, AND 8 ARE ELECTRICALLY CONNECTED.

Absolute Maximum Ratings

Parameter Symbol Min. Max. Unit Reference

Storage Temperature T

Operating Temperature T

S

A

Lead Soldering Cycle
Temp
Time

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

Notes:

1. 2.0 mm from where leads enter case.

2. 8 mA load (5 x 1.6 mA), RL = 560Ω.

–55 +85 °C

–40 +85 °C

+260

10

sec

–0.5 +7.0 V

25 mA

–0.5 +18.0 V

40 mW

°C

Note 1

Broadcom

- 19 -

HFBR-14xxZ and HFBR-24xxZ Series Data Sheet

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.

High Level Output Current I

Low Level Output Voltage V

High Level Supply Current I

Low Level Supply Current I

Equivalent NA NA 0.50

Optical Port Diameter D 400 μm Note 4

OH

OL

CCH

CCL

[3]

Max. Unit Conditions Reference

5 250 μA VO = 18, PR < –40 dBm

0.4 0.5 V IO = 8 m, PR > –24 dBm

3.5 6.3 mA VCC = 5.25 V, PR < –40 dBm

6.2 10 mA VCC = 5.25 V, PR > –24 dBm

Dynamic Characteristics

–40°C to + 85°C unless otherwise specied; 4.75V ≤ VCC ≤ 5.25V; BER ≤ 10

Parameter Symbol Min. Typ.

[3]

-9

Max. Unit Conditions Reference

Peak Optical Input Power Logic Level
HIGH

Peak Optical Input Power Logic Level
LOW

Propagation Delay LOW to HIGH t

P

RH

P

RL

PLHR

–25.4

2.9

–24.0

4.0

–40

0.1

–9.2

120

–10.0

100

dBm peak

μW peak

dBm peak

μW peak

dBm peak

μW peak

λP = 820 nm Note 5

TA = +25°C,
IOL = 8 mA

TA = –40°C to +85°C,
IOL = 8 mA

65 ns TA = +25°C,

Note 5

Note 6

PR = –21 dBm,

Propagation Delay HIGH to LOW t

PHLR

49 ns

Data Rate = 5 MBaud

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.

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 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 HFBR­24x6Z 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.

Figure 13: Simplied Schematic Diagram

BIAS & FILTER

CIRCUITS

5.0
mA

300 pF

Housed Product

6

POSITIVE

V

CC

SUPPLY

2

ANALOG

V

OUT

SIGNAL

45
3
2
1

BOTTOM VIEW

3, 7

NEGATIVE

V

EE

SUPPLY

PIN

1
2
3
4
5
6
7
8

1

2

1

1

2

1

FUNCTION
NC
SIGNAL
V

EE

NC
NC
V

CC

V

EE

NC

6

V

cc

2

ANALOG SIGNAL

3 & 7

V

EE

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

Parameter Symbol Min. Max. Unit Reference

Storage Temperature T

Operating Temperature T

Lead Soldering Cycle
Temp
Time

Supply Voltage V

Output Current I

Signal Pin Voltage V

S

A

CC

O

SIG

–55 +85 °C

–40 +85 °C

+260

10

sec

–0.5 +6.0 V

25 mA

–0.5 V

CC

°C

Note 1

V

Electrical/Optical Characteristics

–40°C to +85°C; 4.75V ≤ Supply Voltage ≤ 5.25 V, R

= 511Ω, Fiber sizes with core diameter ≤ 100 μm, and NA ≤ 0.35 unless

LOAD

otherwise specied.

Parameter Symbol Min. Typ.

Responsivity R

RMS Output Noise Voltage V

Equivalent Input Optical

P

NO

PN –43.0

Noise Power (RMS)

Optical Input Power

P

R

(Overdrive)

Output Impedance Z

dc Output Voltage V

Power Supply Current I

O

O dc

EE

Equivalent NA NA 0.35

Equivalent Diameter D 324 μm Note 7

5.3 7 9.6 mV/μW TA = +25°C at 820 nm, 50 MHz Note 3, 4

4.5 11.5 mV/μW TA= −40°C to +85°C at 820nm,

V

– 4.2 V

cc

[2]

Max. Unit Conditions

50MHz

0.40 0.59 mV Bandwidth ltered at 75 MHz
PR = 0 μW

0.70 mV Unltered bandwidth
PR = 0 μW

0.050

–41.4

0.065

–7.6
175

–8.2
150

dBmμWBandwidth ltered at 75 MHz

dBm

peak

TA = +25°C Note 6

μW peak

dBm

peak

TA = –40°C to +85°C

μW peak

30 Ω Test Frequency = 50 MHz

– 3.1 V

cc

9 15 mA R

2.4 V PR = 0 μW

cc –

LOAD

= 510Ω

Figure 18

Note 5

Figure 15

Figure 16

Reference

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

100%

0.1 µF

LOGIC

OUTPUT

+5V

10Ω

30 pF

R

LOADS

500Ω MIN.

6

2

3 & 7

POST

AMP

Dynamic Characteristics

–40°C to +85°C; 4.75V ≤ Supply Voltage ≤ 5.25V; R

Parameter Symbol Min. Typ.

LOAD

= 511Ω, C

[2]

= 5 pF unless otherwise specied

LOAD

Max. Unit Conditions Reference

Rise/Fall Time 10% to 90% tr, t

Pulse Width Distortion PWD 0.4 2.5 ns PR = 150 μW peak Note 8, Figure 16

Overshoot 2 % PR = 5 μW peak,

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:

VV

–

100%PK

(

V

100%

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

x

)

f

3.3 6.3 ns PR = 100 μW peak Figure 17

Note 9

tr = 1.5 ns

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

TEMPERATURE – °C

Figure 15: Typical Spectral Noise Density vs. Frequency Figure 16: Typical Pulse Width Distortion vs. Peak Input Power

150

3.0

125

Z

100

75

50

25

SPECTRAL NOISE DENSITY – nV/ H

0

0 50 100 150 200 250

FREQUENCY – MHz

300

2.5

2.0

1.5

1.0

0.5

PWD – PULSE WIDTH DISTORTION – ns

0

0 20 30 40 50 70

10 60

P

– INPUT OPTICAL POWER – µW

R

80

Figure 17: Typical Rise and Fall Times vs. Temperature Figure 18: Typical Receiver Spectral Response Normalized to

820 nm

6.0

5.0

1.25

1.00

4.0
t

f

3.0

– RESPONSE TIME – ns

f

, t

r

t

t

r

2.0

1.0

-60 -40 -20 0 20 40

60

80 100

0.75

0.50

NORMALIZED RESPONSE

0.25

0

400 480 560 640 720 800

λ – WAVELENGTH – nm

880

960 1040

Broadcom

- 24 -

For product information and a complete list of distributors, please go to our web site:
www.broadcom.com.

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AV02-0176EN – February 15, 2019