HFBR-57E0LZ/ALZ/PZ/APZ
Multimode Small Form Factor Pluggable Transceivers with LC
connector for ATM, FDDI, Fast Ethernet and SONET OC-3/SDH STM-1
Datasheet
Description
The HFBR-57E0 Small Form Factor Pluggable LC
transceivers provide the system designer with a
product to implement a range of solutions for
multimode fiber Fast Ethernet and SONET OC-3
(SDH STM-1) physical layers for ATM and other
services.
This transceiver operates at a nominal wavelength
of 1300 nm with an LC fiber connector interface with
an external connector shield (HFBR-57E0).
Transmitter Section
The transmitter section of the HFBR-57E0 utilizes
a 1300 nm InGaAsP LED. This LED is packaged in
the optical subassembly portion of the transmitter
section. It is driven by a custom silicon IC which
converts differential PECL logic signals, ECL
referenced (shifted) to a +3.3 V supply, into an
analog LED drive current.
Receiver Section
The receiver section of the HFBR-57E0 utilizes an
InGaAs PIN photodiode coupled to a custom silicon
transimpedance preamplifier IC. It is packaged in
the optical subassembly portion of the receiver.
This PIN/preamplifier combination is coupled to a
custom quantizer IC which provides the final pulse
shaping for the logic output and the Loss of Signal
(LOS) function. The data output is differential. The
data output is PECL compatible, ECL referenced
(shifted) to a +3.3 V power supply. This circuit also
includes a loss of signal (LOS) detection circuit
which provides an open collector logic high output
in the absence of a usable input optical signal. The
LOS output is +3.3 V TTL.
Features
•
RoHS compliant
•
Full compliance with ATM Forum UNI SONET OC-3
multimode fiber physical layer specification
•
Full compliance with the optical performance
requirements of the FDDI PMD Standard
•
Full compliance with the optical performance
requirements of 100Base-FX version of IEEE802.3u
•
Industry standard Small Form Pluggable (SFP) package
•
LC duplex connector optical interface
•
Operates with 62.5/125 µm and 50/125 µm multimode
fiber
•
Single +3.3 V power supply
•
+3.3 V TTL LOS output
•
Receiver outputs are squelch enabled
•
Manufactured in an ISO 9001 certified facility
•
Temperature range:
0 °C to +70° C
HFBR-57E0LZ/PZ:
-40 °C to +85 °C
HFBR-57E0ALZ/APZ:
•
Bail de-latch option
Applications
•
OC-3 SFP transceivers are designed for ATM LAN and
WAN applications such as:
ATM switches and routers
SONET/SDH switch infrastructure
•
Multimode fiber ATM backbone links
•
Fast Ethernet
Loss of Signal
The Loss of Signal (LOS) output indicates that the
optical input signal to the receiver does not meet
the minimum detectablelevel for FDDI and OC-3
compliant signals. When LOS is high it indicates loss
of signal. When LOS is low it indicates normal
operation. The LOS thresholds are set to indicate a
definite optical fault has occurred (e.g., disconnected
or broken fiber connection to receiver, failed
transmitter).
Module Package
The transceiver meets the Small Form Pluggable
(SFP) industry standard package utilizing an
integral LC duplex optical interface connector. The
hot-pluggable capability of the SFP package allows
the module to be installed at any time – even with
the host system operating and on-line. This allows
for system configuration changes or maintenance
without system down time. The HFBR-57E0 uses a
reliable 1300 nm LED source and requires a 3.3 V
dc power supply for optimal design.
Module Diagrams
Figure 1 illustrates the major functional components
of the HFBR-57E0. The connection diagram of the
module is shown in Figure 2. Figures 5 and 7 depict
the external configuration and dimensions of the
module.
Installation
The HFBR-57E0 can be installed in or removed from
any MultiSource Agreement (MSA) – compliant
Small Form Pluggable port regardless of whether the
OPTICAL INTERFACE
RECEIVER
20
19
18
17
16
15
14
13
12
11
V
EE
T
TD-
TD+
V
EE
T
V
CC
T
V
CC
R
V
EE
R
RD+
RD-
V
EE
R
TOP OF BOARD
1
2
3
4
5
6
7
8
9
10
V
EE
T
NC**
Tx Disable
MOD-DEF(2)
MOD-DEF(1)
MOD-DEF(0)
NC
LOS
V
EE
R
V
EE
R
BOTTOM OF BOARD
(AS VIEWED THROUGH TOP OF BOARD)
** Connect to Internal Ground.
Figure 2. Connection diagram of module printed circuit board.
host equipment is operating or not. The module is
simply inserted, electrical interface first, under
finger pressure. Controlled hot-plugging is ensured
by design and by 3-stage pin sequencing at the
electrical interface. The module housing makes
initial contact with the host board EMI shield
mitigating potential damage due to Electro-Static
Discharge (ESD). The 3-stage pin contact sequencing
involves (1) Ground, (2) Power, and then (3) Signal
pins, making contact with the host board surface
mount connector in that order. This printed circuit
board card-edge connector is depicted in Figure 2.
ELECTRICAL INTERFACE
RD+ (Receive Data)
Light from Fiber
Photodetector
Amplification &
Quantizattion
RD- (Receive Data)
Loss of Signal
TRANSMITTER
TD+ (Transmit Data)
Light to Fiber
LED
LED DRIVER
TD- (Transmit Data)
TX Disable
EEPROM
MOD-DEF2
MOD-DEF1
MOD-DEF0
Figure 1. Transceiver functional diagram
2
Serial Identification (EEPROM)
The HFBR-57E0 complies with the industry standard
MSA that defines the serial identification protocol.
This protocol uses the 2-wire serial CMOS E2PROM
protocol of the ATMEL AT24C01A or equivalent.
The contents of the HFBR-57E0 serial ID memory
are defined in Table 3 as specified in the SFP MSA.
Functional Data I/O
The HFBR-57E0 fiberoptic transceiver is designed
to accept industry standard differential signals. In
order to reduce the number of passive components
required on the customer’s board, Avago has
included the functionality of the transmitter bias
resistors and coupling capacitors within the fiberoptic
module. The transceiver is compatible with an “ac-
coupled” configuration and is internally terminated.
Figure 5 depicts the functional diagram of the
HFBR-57E0.
Regulatory Compliance
See Table 1 for transceiver Regulatory Compliance
performance. The overall equipment design will
determine the certification level. The transceiver
performance is offered as a figure of merit to assist
the designer.
Table 1. Regulatory Compliance
Electrostatic Discharge (ESD)
There are two conditions in which immunity to ESD
damage is important. Table 1 documents our
immunity to both of these conditions. The first
condition is during handling of the transceiver prior
to insertion into the transceiver port. To protect the
transceiver, it is important to use normal ESD
handling precautions.
These precautions include using grounded wrist
straps, workbenches, and floor mats in ESD
controlled areas. The ESD sensitivity of the HFBR-
57E0 is compatible with typical industry production
environments. The second condition is static
discharges to the exterior of the host equipment
chassis after installation. To the extent that the
duplex LC optical interface is exposed to the outside
of the host equipment chassis, it may be subject to
system-level ESD requirements. The ESD performance
of the HFBR-57E0 exceeds typical industry standards.
Immunity
Equipment hosting the HFBR-57E0 modules will be
subjected to radio-frequency electro magnetic fields
in some environments. These transceivers have good
immunity to such fields due to their shielded design.
Feature
Electrostatic Discharge (ESD)
to the Electrical Pins
Electrostatic Discharge (ESD)
to the Duplex LC Receptacle
Test Method
MIL-STD-883C
Performance
Meets Class 2 (2000 to 3999 Volts).
Withstand up to 2200 V applied between electrical pins.
Typically withstand at least 25 kV without damage when
the LC connector receptacle is contacted by a Human
Body Model probe.
System margins are dependent on customer board and
chassis design.
Variation of IEC 61000-4-2
Electromagnetic Interference (EMI)
FCC Class B
CENELEC CEN55022
Class B (CISPR 21)
VCCI Class 1
Variation of IEC 61000-4-3
Immunity
Typically shows a negligible effect from a 10 V/m field
swept from 80 to 450 MHz applied to the transceiver
without a chassis enclosure.
Compliant per Avago testing under single fault conditions.
TUV Certification: R 72042022
UL File#: E173874
Eye Safety
AEL Class 1
EN60825-1 (+A11)
Underwriters Laboratories and Canadian
Standard Associations Joint Component
Recognition for Information Technology
Equipment Including Electrical Business
Equipment
Component Recognition
3
Electromagnetic Interference (EMI)
Most equipment designs utilizing these high-speed
transceivers from Avago will be required to meet the
requirements of FCC in the United States, CENELEC
EN55022 (CISPR 22) in Europe and VCCI in Japan.
The metal housing and shielded design of the HFBR-
57E0 minimize the EMI challenge facing the host
equipment designer. These transceivers provide
superior EMI performance. This greatly assists the
designer in the management of the overall system
EMI performance.
Eye Safety
These transceivers provide Class 1 eye safety by
design. Avago has tested the transceiver design for
compliance with the requirements listed in Table 1
under normal operating conditions and under a
single fault condition.
Flammability
The HFBR-57E0 transceiver housing is made of
metal and high strength, heat resistant, chemically
resistant, and UL 94V-0 flame retardant plastic.
Shipping Container
The transceiver is packaged in a shipping container
designed to protect it from mechanical and ESD
damage during shipment or storage.
Transceiver Optical Power Budget versus Link Length
Optical Power Budget (OPB) is the available optical
power for a fiberoptic link to accommodate fiber
cable loses plus losses due to in-line connectors,
splices, optical switches, and to provide margin for
link aging and unplanned losses due to cable plant
reconfiguration or repair.
Avago LED technology has produced 1300 nm LED
devices with lower aging characteristics than
normally associated with these technologies in the
industry. The industry convention is 1.5 db aging
for 1300 nm LEDs. The 1300 nm Avago LEDs are
specified to experience less than 1 db of aging over
normal commercial equipment mission life periods.
Contact your Avago sales representative for additional
details.
Ordering Information
The HFBR-57E0 1300 nm product is available for
production orders through the Avago Component
Field Sales Offices and Authorized Distributors
worldwide.
For technical information regarding this product,
please visit the Avago website at www.avagotech.com.
Use the quick search feature to search for this part
number. You may also contact the Avago Products
Customer Response Centre.
Applications Support Materials
Contact your local Avago Component Field Sales
Office for information on how to obtain PCB layouts
and evaluation boards for the transceivers.
200
180
3.0
1.0
∆λ
- TRANSMITTER OUTPUT OPTICAL
SPECTRAL WIDTH (FWHM) - nm
160
1.5
140
2.0
2.5
3.0
t
r/f
– TRANSMITTER
OUTPUT OPTICAL RISE/
FALL TIMES – ns
120
100
1260
1280
1300
1320
1340
1360
λ
C
– TRANSMITTER OUTPUT OPTICAL RISE/FALL
TIMES – ns
HFBR-57E0 TRANSMITTER TEST RESULTS
OF
λ
C
,
∆λ
AND t
r/f
ARE CORRELATED AND COMPLY
WITH THE ALLOWED SPECTRAL WIDTH AS A FUNCTION
OF CENTER WAVELENGTH FOR VARIOUS RISE AND
FALL TIMES.
Figure 3. Transmitter Output Optical Spectral Width (FWHM) vs.
Transmitter Output Optical Center Wavelength and Rise/Fall Times
6
RELATIVE INPUT OPTICAL POWER (dB)
5
4
3
2
1
0
-3
-2
-1
0
1
2
3
EYE SAMPLING TIME POSITION (ns)
CONDITIONS:
1. T
A
= +25 C
2. V
CC
= 3.3 V dc
3. INPUT OPTICAL RISE/FALL TIMES = 1.0/2.1 ns.
4. INPUT OPTICAL POWER IS NORMALIZED TO
CENTER OF DATA SYMBOL.
5. NOTE 13 AND 14 APPLY.
Figure 4. Relative Input Optical Power vs. Eye Sampling Time Position
4
1 µH
3.3 V
10 µF
0.1 µF
1 µH
0.1 µF
3.3 V
VccT
HFBR-57E0
4.7 K to 10 K
Tx Dis
3.3 V
82
0.1 µF
82
SO+
SO–
50
50
TD+
TD–
TX GND
LED DRIVER
& SAFETY
CIRCUITRY
0.1 µF
130
VccR
130 W
3.3 V
130
PROTOCOL
IC
SerDes
4.7 K to 10 K
10 µF
SI+
SI–
50
50
0.1
µF
RD+
RD–
Rx_LOS
RX GND
MOD_DEF2
MOD_DEF1
MOD_DEF0
130
0.1 µF
Rx_LOS
0.1 µF
AMPLIFICATION
&
QUANTIZATION
82
82
GPIO(X)
GPIO(X)
GP14
4.7 K to
10 K
4.7 K to
10 K
EEPROM
4.7 K to
10 K
3.3 V
Figure 5. Recommended application configuration
1 µH
V
CC
T
0.1 µF
1 µH
V
CC
R
0.1 µF
10 µF
0.1 µF
10 µF
3.3 V
SFP MODULE
HOST BOARD
Note: Inductors must have less than 1 ohm series resistance per MSA.
Figure 6. MSA required power supply filter
5
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