AVAGO AFBR-5921ALZ Small form factor, pin through hole (pth), low voltage (3.3 v) 2x5 rohs-compliant optical transceiver for fibre channel 2.125/1.0625 gbd 850 nm Datasheet

AFBR-5921ALZ
Small Form Factor, Pin Through Hole (PTH), Low Voltage (3.3 V)
2x5 RoHS-Compliant Optical Transceiver for Fibre Channel
2.125/1.0625 GBd 850 nm
Data Sheet
Description
Features
The AFBR-5921ALZ from Avago Technologies is a high
performance, cost-effective optical transceiver for serial
optical data communications applications operating at
2.125 Gb/s and 1.0625 Gb/s. This module is designed
for multimode fiber and operates at a nominal wavelength of 850 nm. The transceiver incorporates 3.3 V
DC compatible technology including an 850 nm VCSEL
transmitter. The AFBR-5921ALZ offers maximum flexibility to Fibre Channel designers, manufacturers, and
system integrators to implement a range of solutions
for multi-mode Fibre Channel applications. This product
is fully compliant with all equipment meeting the Fibre
Channel FC-PI 200-M5-SN-I and 200-M6-SN-I 2.125
GBd specifications, and is compliant with the Fibre
Channel FC-PI 100-M5-SN-I, FC-PI 100-M6-SN-I, FC-PH2
100-M5-SN- and FC-PH2 100-M6-SN-I 1.0625 GBd
specifications. The AFBR-5921ALZ is also suitable for
2.5Gbps transmission rate InfiniBand applications. The
AFBR-5921ALZ is also compatible with the SFF Multi
Source Agreement (MSA).
• Fully RoHS Compliant
Applications
• Mass storage system I/O
• Computer system I/O
• High speed peripheral interface
• High speed switching systems
• Host adapter I/O
• RAID cabinets
• InfiniBand network adapters
Patent - www.avagotech.com/patents
• Datarate specification: 2.125 GBd operation for FC-PI
200-M5-SN-I and FC-PI 200-M6-SN-I
1.0625 GBd operation for FC-PI 100-M5-SN-I and FC-PI
100-M6-SN-I
• Link lengths at 2.125 GBd:
0.5 to 300 m – 50/125 µm MMF
0.5 to 150 m – 62.5/125 µm MMF
• Link lengths at 1.0625 GBd:
0.5 to 500 m – 50/125 µm MMF
0.5 to 300 m – 62.5/125 µm MMF
• Compatible to 2.5G InfiniBand standard
• 850 nm Vertical Cavity Surface Emitting Laser (VCSEL)
• Laser AEL Class I (eye safe) per:
US 21 CFR (J)
EN 60825-1 (+All)
• High Reliability <100 FIT @ 50°C
• Wide temperature and supply voltage operation
• Industry standard 2x5 SFF package
• Wave solder and aqueous wash process compatible
Related Products
• AFBR-59M5LZ: 850 nm RoHS compliant 2x6 for
2.125/1.0625 Gbd for Fibre Channel and 1.25 Gigabit
Ethernet
AFBR-5921ALZ BLOCK DIAGRAM
ELECTRICAL INTERFACE
RECEIVER
LIGHT FROM FIBER
PHOTO-DETECTOR
RD+ (RECEIVE DATA)
AMPLIFICATION
& QUANTIZATION
RD– (RECEIVE DATA)
SIGNAL DETECT
OPTICAL INTERFACE
TRANSMITTER
LIGHT TO FIBER
Tx_DISABLE
LASER
DRIVER &
SAFETY
CIRCUITRY
VCSEL
TD+ (TRANSMIT DATA)
TD– (TRANSMIT DATA)
Figure 1. Transceiver functional diagram.
See Table 5 for Process Compatibility Specifications.
Module Package
5
4
3
2
1
6
7
8
9
10
PIN DESCRIPTION
PIN
NAME
TYPE
1
Rx GROUND
GROUND
2
Rx POWER
POWER
3
Rx SD
STATUS OUT
4
Rx DATA BAR
SIGNAL OUT
Module Diagrams
5
Rx DATA
SIGNAL OUT
Figure 1 illustrates the major functional components of the
AFBR-5921ALZ. The connection diagram for both modules
are shown in Figure 2. Figure 6 depicts the external
configuration and dimensions of the module.
6
Tx POWER
POWER
7
Tx GROUND
GROUND
8
Tx DISABLE
CONTROL IN
9
Tx DATA
SIGNAL IN
Installation
10
Tx DATA BAR
SIGNAL IN
Avago Technologies offers the Pin Through Hole package
utilizing an integral LC-Duplex optical interface connector.
The transceiver uses a reliable 850 nm VCSEL source and
requires a 3.3 V DC power supply for optimal system
design.
The AFBR-5921ALZ can be installed in any MSAcompliant Pin Through Hole port. The module Pin
Description is shown in Figure 2.
TOP VIEW
Solder and Wash Process Capability
Figure 2. Module pin assignments and pin configuration.
These transceivers are delivered with protective process
plugs inserted into the LC connector receptacle. This
process plug protects the optical subassemblies during
wave solder and aqueous wash processing and acts as
a dust cover during shipping. These transceivers are
compatible with industry standard wave or hand solder
processes.
Recommended Solder Fluxes
2
Solder fluxes used with the AFBR-5921ALZ should be
water-soluble, organic fluxes. Recommended solder fluxes
include Lonco 3355-11 from London Chemical West, Inc.
of Burbank, CA, and 100 Flux from Alpha-Metals of Jersey
City, NJ.
Recommended Cleaning/Degreasing Chemicals
Functional Data I/O
Alcohols: methyl, isopropyl, isobutyl.
Aliphatics: hexane, heptane.
Other : naphtha.
Avago Technologies’ AFBR-5921ALZ fiber-optic 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 Technologies has
included the functionality of the transmitter bias resistors
and coupling capacitors within the fiber optic module.
The transceiver is compatible with an “AC-coupled” configuration and is internally terminated. Figure 1 depicts
the functional diagram of the AFBR-5921ALZ.
Do not use partially halogenated hydrocarbons such as
1,1.1 trichoroethane or ketones such as MEK, acetone,
chloroform, ethyl acetate, methylene dichloride, phenol,
methylene chloride, or N-methylpyrolldone. Also, Avago
Technologies does not recommend the use of cleaners
that use halogenated hydrocarbons because of their
potential environmental harm.
Transmitter Section
The transmitter section includes an 850 nm VCSEL (Vertical
Cavity Surface Emitting Laser) light source and a transmitter driver circuit. The driver circuit maintains a constant
optical power level provided that the data pattern is valid
8B/10B code. Connection to the transmitter is provided
via an LC optical connector.
Caution should be taken to account for the proper interconnection between the supporting Physical Layer integrated circuits and the AFBR-5921ALZ. Figure 3 illustrates
the recommended interface circuit.
Reference Designs
Figure 3 depicts a typical application configuration, while
Figure 4 depicts the multisourced power supply filter
circuit design.
TX Disable
Regulatory Compliance
The AFBR-5921ALZ accepts a transmit disable control
signal input which shuts down the transmitter. A high
signal implements this function while a low signal allows
normal laser operation. In the event of a fault (e.g., eye
safety circuit activated), cycling this control signal resets
the module. The TX Disable control should be actuated
upon initialization of the module. See Figure 5 for product
timing diagrams.
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.
Eye Safety Circuit
For an optical transmitter device to be eye-safe in the
event of a single fault failure, the transmitter will either
maintain normal, eye-safe operation or be disabled. In the
event of an eye safety fault, the VCSEL will be disabled.
Receiver Section
Connection to the receiver is provided via an LC optical
connector. The receiver circuit includes a Signal Detect (SD)
circuit which provides an open collector logic low output
in the absence of a usable input optical signal level.
Signal Detect
The Signal Detect (SD) output indicates if the optical
input signal to the receiver does not meet the minimum
detectable level for Fibre Channel compliant signals.
When SD is low it indicates loss of signal. When SD is high
it indicates normal operation. The Signal Detect thresholds are set to indicate a definite optical fault has occurred
(e.g., disconnected or broken fiber connection to receiver,
failed transmitter).
3
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 attachment to the PCB.
To protect the transceiver, it is important to use normal
ESD handling precautions. These precautions include
using grounded wrist straps, work benches, and floor mats
in ESD controlled areas. The ESD sensitivity of the AFBR5921ALZ 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 AFBR-5921ALZ exceeds typical
industry standards.
Immunity
Equipment hosting the AFBR-5921ALZ modules will be
subjected to radio-frequency electromagnetic fields in
some environments. The transceivers have good immunity
to such fields due to their shielded design.
Electromagnetic Interference (EMI)
Flammability
Most equipment designs utilizing these high-speed transceivers from Avago Technologies 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 AFBR-5921ALZ
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.
The AFBR-5921ALZ VCSEL transceiver housing is made
of metal and high strength, heat resistant, chemically
resistant, and UL 94V-0 flame retardant plastic.
Eye Safety
These 850 nm VCSEL-based transceivers provide Class 1
eye safety by design. Avago Technologies has tested the
transceiver design for compliance with the requirements
listed in Table 1: Regulatory Compliance, under normal
operating conditions and under a single fault condition.
Reliability
These transceivers have an estimated failure rate of <100
FITS @ 50°C.
Caution
There are no user serviceable parts nor is any maintenance required for the AFBR-5921ALZ. All adjustments are
made at the factory before shipment to our customers.
Tampering with or modifying the performance of the
AFBR-5921ALZ will result in voided product warranty. It
may also result in improper operation of the AFBR-5921ALZ
circuitry, and possible overstress of the laser source. Device
degradation or product failure may result. Connection
of the AFBR-5921ALZ to a non-approved optical source,
operating above the recommended absolute maximum
conditions or operating the AFBR-5921ALZ in a manner
inconsistent with its design and function may result in
hazardous radiation exposure and may be considered an
act of modifying or manufacturing a laser product. The
person(s) performing such an act is required by law to
re-certify and re-identify the laser product under the
provisions of U.S. 21 CFR (Subchapter J) and the TUV.
Table 1. Regulatory Compliance
Feather
Test Method
Performance
Electrostatic Discharge
(ESD) to the Electrical Pins
MIL-STD-889C Method 3015.4
Class 2 (> 2000V)
Electrostatic Discharge
(ESD) to the Duplex LC
Receptacle
Variation of IEC 61000-4-2
Typically withstand at least 25kV without damage when
the duplex LC connector receptacle is contaced by a
Human Body Model probe.
Electromagnetic Interference
(EMI)
FCC Class B CENELEC
EN55022 Class B (CISPR 22A)
VCCI Class
System margins are dependent on customer board and
chassis design.
Immunity
Variation of IEC 61000-4-3
Typically shows a negligible effect from a 10 V/m field
swept from 80 to 1000 MHz applied to the transceiver
without a chassis enclosure.
Eye Safety
US FDA CDRH AEL Class 1
EN(IEC)60825-1,2
EN60950 Class 1
CDRH file # 9720151-60
TUV file #R72102088
Component Recognition
Underwriters Laboratories and UL
Canadian Standards Association
Joint Component Recognition for
Information Technology Equipment
including Electrical Business
Equipment.
UL file #TBD
RoHS Compliance
4
Less than 1000 ppm of cadminm, lead, mercury, hexavalent
chromium, polybrominated biphenyls and polybrominated
biphenyl
Ordering Information
Please contact your local field sales engineer or one of Avago Technologies franchised distributors for ordering
information. For technical information regarding this product, including the MSA, please visit Avago Technologies
Semiconductors Products Website at www.avagotech.com. Use the quick search feature to search for this part number.
You may also contact Avago Technologies Customer Response Center at 1-800-235-0312.
VCC ,T
GND,T
6.8 kΩ
Tx DIS
Tx FAULT
Tx_DISABLE
Tx_FAULT
TD+
0.01 µF
100 Ω
TD0.01 µF
4.7 to 10 kΩ
1µH
LASER DRIVER
VCC ,T
0.1 µF
3.3 V
10 µF
SERDES IC
PROTOCOL IC
0.1 µF
1µH
10 µF
VCC ,R
VCC ,R
0.1 µF
VCC ,R
50 Ω
50 Ω
RD+
100 Ω
0.01 µF
RDRX_SD
RX_SD
0.01 µF
POST AMPLIFIER
GND
GND
Figure 3. Typical application configuration.
1 µH
VCCT
0.1 µF
1 µH
VCCR
0.1 µF
SFF MODULE
10 µF
3.3 V
0.1 µF
10 µF
HOST BOARD
NOTE: INDUCTORS MUST HAVE LESS THAN 1 Ω SERIES RESISTANCE PER MSA.
Figure 4. MSA recommended power supply filter.
5
Table 2. Pin Description
Pin
Name
Function/Descripition
MSA Notes
1
VEER
Receiver Ground
1
2
VCCR
Receiver Power: 3.3V ±10%
5
3
SD
Signal Detect
3
4
RD-
Inverse Received Data Out
4
5
RD+
Received Data Out
4
6
VCCT
Transmitter Power: 3.3V ±10%
5
7
VEET
Transmitter Ground
1
8
TX Disable
Transmitter Disable: Module disables on High
2
9
TD+
Transmitter Data In
10
TD-
Inverse Transmitter Data In
Notes:
1. Transmitter an d Receiver Ground are common in the internal module PCB. They are electrically connected to signal ground within the module,
and to the housing shield (see Note 5 in Figure 7c). This housing shield is electrically isolated from the nose shield which is connected to chassis
ground (see Note 4 in Figure 7c).
2. TX disable input is used to shut down the laser output per the state table below. It is pulled up internally within the module with a 6.8 kW resistor.
Low (0 – 0.8 V): Transmitter on
Between (0.8 V and 2.0 V):
Undefined
High (2.0 – 3.63 V):
Transmitter Disabled
Open: Transmitter Disabled
3 SD (Signal Detect) is a normally high LVTTL output. When high it indicates that the received optical power is adequate for normal operation. When
Low, it indicates that the received optical power is below the worst case receiver sensitivity, a fault has occurred, and the link is no longer valid.
4. RD-/+: These are the differential receiver outputs. They are AC coupled 100 ý differential lines which should be terminated with 100 ý differential
at the user SerDes. The AC coupling is done inside the module and is thus not required on the host board. The voltage swing on these lines will be
between 400 and 2000 mV differential (200 – 1000 mV single ended) when properly terminated. These levels are compatible with CML and LVPECL
voltage swings.
5. VCCR and VCCT are the receiver and transmitter power supplies. They are defined as 2.97 – 3.63 V at the PTH connector pin. The maximum supply
current is 200 mA.
Table 3. Absolute Maximum Ratings
Parameter
Symbol
Minimum
Storage Temperature
Ts
Case Temperature
Typical
Maximum
Unit
Notes
-40
+100
°C
1
TC
-10
+85
°C
1,2
Relative Humidity
RH
5
95
%
1
Supply Voltage
VCCT,R
-0.5
4
V
1,2
Data/Control Input Voltage
VI
-0.5
VCC + 0.3
V
1
Sense Output Current Signal Detect (SD)
ID
5.0
mA
1
Notes:
1. Absolute Maximum Ratings are those values beyond which damage to the device may occur if these limits are exceeded for other than a short
period of time. See Reliability Data Sheets for specific reliability performance.
2. Between Absolute Maximum Ratings and the Recommended Operating Conditions, functional performance is not intended, device reliability is
not implied, and damage to the device may occur over an extended period of time.
6
Table 4. Recommended Operating Conditions
Parameter
Symbol
Minimum
Typical
Maximum
Unit
Notes
Case Temperature
TC
-10
+25
+85
°C
1
Module Supply Voltage
VCCT,R
2.97
3.3
3.63
V
1
Gb/s
1
Data Rate Fibre Channel
1.0625
2.125
Note:
1. Recommended operating conditions are those values outside of which functional performance is not intended, device reliability is not implied,
and damage to the device may occur over an extended period of time. See Reliability Data Sheet for specific reliability performance.
Table 5. Process Compatibility
Parameter
Symbol
Hand Lead Solder
Temperature
Time
Wave Solder and Aqueous Wash
Temperature
Time
Minimum
Typical
Maximum
Unit
Notes
Tsolder
ttime
+260
10
°C
see
Tsolder
ttime
+260
10
°C
see
1
1
Maximum
Unit
Notes
mV
1
Note:
1. Aqueous wash pressure < 110 psi.
Table 6. Transceiver Electrical Characteristics
(TC = -10°C to +85°C, VCC = 3.3 V ± 10%)
Parameter
Symbol
Minimum
Typical
AC Electrical Characteristics
Power Supply Noise Rejection(Peak-to-Peak)
PSNR
100
DC Electrical Characteristics
Module Supply Current
ICC
200
mA
Power Dissipation
PDISS
726
mW
Sense Outputs:Signal Detect [SD]
VOH
VCCR+0.3
V
0.4
V
24
VOL
Control Inputs:
Transmitter Disable [TX_DISABLE]
VIH
2.0
VCC + 0.3
V
VIL
0.0
0.8
V
Notes:
1. MSA filter is required on host board 10 Hz to 2 MHz.
2. LVTTL, 1.2 kW internal pull-up resistor to VCCR.
3. 9.0 KW internal pull-down resistor to VEE.
4. Please refer to the AFBR-5921ALZ Characterization Report for typical values.
7
2
3
Table 7. Transmitter and Receiver Electrical Characteristics
(TC = -10°C to +85°C, VCC = 3.3 V ± 10%)
Parameter
Symbol
Minimum
Data Input:
Transmitter Differential Input
Voltage (TD +/–)
VI
400
Data Output:
Receiver Differential Output
Voltage (RD +/–)
VO
500
Receive Data Rise and Fall
Times (Receiver)
Trise/fall
Contributed Deterministic Jitter
(Receiver) 2.125 Gb/s
DJ
Contributed Deterministic Jitter
(Receiver) 1.0625 Gb/s
DJ
Contributed Random Jitter
(Receiver) 2.125 Gb/s
RJ
Contributed Random Jitter
(Receiver) 1.0625 Gb/s
RJ
Typical
625
Maximum
Unit
Notes
2400
mV
1
2000
mV
2
200
ps
3
0.1
UI
47
ps
0.12
UI
113
ps
0.162
UI
76
ps
0.09
UI
92
ps
4,6
4,6
5,6
5,6
Notes:
1. Internally AC coupled and terminated (100 Ohm differential). These levels are compatible with CML and LVPECL voltage swings.
2. Internally AC coupled with internal 50 ohm pullups to VCC (single-ended) and a required external 100 ohm differential load termination.
3. 20%-80% Rise and Fall times measured with a 500 MHz signal utilizing a 1010 data pattern.
4. Contributed DJ is measured on an oscilloscope in average mode with 50% threshold and K28.5 pattern.
5. Contributed RJ is calculated for 1E-12 BER by multiplying the RMS jitter (measured on a single rise or fall edge) from the oscilloscope by 14. Per
the FC-PI standard (Table 13 - MM jitter output, note 1), the actual contributed RJ is allowed to increase above its limit if the actual contributed
DJ decreases below its limits, as long as the component output DJ and TJ remain within their specified FC-PI maximum limits with the worst case
specified component jitter input.
6. In a network link, each component’s output jitter equals each component’s input jitter combined with each component’s contributed jitter.
Contributed DJ adds in a linear fashion and contributed RJ adds in a RMS fashion. In the Fibre Channel specification, there is a table specifying the
input and output DJ and TJ for the receiver at each data rate. In that table, RJ is found from TJ –DJ, where the RX input jitter is noted as Gamma R,
and the RX output jitter is noted as Delta R. The AFBR-5921ALZ contributed jitter is such that, if the maximum specified input jitter is present, and is
combined with our maximum contributed jitter, then we meet the specified maximum output jitter limits listed in the FC-PI MM jitter specification
table.
7. Please refer to the AFBR-5921ALZ Characterization Report for typical values.
8
Table 8. Transmitter Optical Characteristics
(TC = -10°C to +85°C, VCC = 3.3 V ± 10%)
Parameter
Symbol
Minimum
Output Optical Power (Average)
POUT
POUT
Typical
Maximum
Unit
Notes
-10
0
dBm
50/125 µm
NA = 0.2
Note 1
-10
0
dBm
62.5/125 µm
NA = 0.275
Note 1
Optical Extinction Ratio
FR
9
dB
Optical Modulation Amplitude
(Peak-to-Peak) 2.125 Gb/s
OMA
196
uW
FC-PI Std
Note 2
Optical Modulation Amplitude
(Peak-to-Peak) 1.0625 Gb/s
OMA
156
uW
FC-PI Std
Note 3
Center Wavelength
lC
830
860
nm
FC-PI Std
Spectal Width – rms
s
0.85
nm
FC-PI Std
Optical Rise /Fall Time
Trise/fall
150
ps
20%–80%,
FC-PI Std
RIN12(OMA),maximum
RIN
-117
dB/Hz
FC-PI Std
Contributed Deterministic Jitter
(Transmitter) 2.125 Gb/s
DJ
0.12
56
UI
ps
4,5
Contributed Deterministic Jitter
(Transmitter) 1.0625 Gb/s
DJ
0.09
85
UI
ps
4,6
Contributed Random Jitter
(Transmitter) 2.125 Gb/s
RJ
0.134
63
UI
ps
5,6
Contributed Random Jitter
(Transmitter) 1.0625 Gb/s
RJ
0.177
167
UI
ps
5,6
POUT TX_DISABLEAsserted
POFF
-35
dBm
Notes:
1. Max Pout is the lesser of 0 dBm or Maximum allowable per Eye Safety Standard.
2. An OMA of 196 is approximately equal to an average power of –9 dBm assuming an Extinction Ratio of 9 dB.
3. An OMA of 156 is approximately equal to an average power of –10 dBm assuming an Extinction Ratio of 9 dB.
4. Contributed RJ is calculated for 1E-12 BER by multiplying the RMS jitter (measured on a single rise or fall edge) from the oscilloscope by 14. Per
the FC-PI standard (Table 13 - MM jitter output, note 1), the actual contributed RJ is allowed to increase above its limit if the actual contributed
DJ decreases below its limits, as long as the component output DJ and TJ remain within their specified FC-PI maximum limits with the worst case
specified component jitter input.
5. In a network link, each component’s output jitter equals each component’s input jitter combined with each components contributed jitter.
Contributed DJ adds in a linear fashion and contributed RJ adds in a RMS fashion. In the Fibre Channel specification, there is a table specifying the
input and output DJ and TJ for the transmitter at each data rate. In that table, RJ is found from TJ-DJ, where the TX input jitter is noted as Delta T,
and the TX output jitter is noted as Gamma T. The AFBR-5921ALZ contributed jitter is such that, if the maximum specified input jitter is present,
and is combined with our maximum contributed jitter, then we meet the specified maximum output jitter limits listed in the FC-PI MM jitter
specification table.
6. Please refer to the AFBR-5921ALZ Characterization Report for typical values.
9
Table 9. Receiver Optical Characteristics
(TC = -10°C to +85°C, VCC = 3.3 V ± 10%)
Parameter
Symbol
Optical Power
PIN
Min Optical ModulationAmplitude
(Peak-to-Peak) 2.125 Gb/s
OMA
Min Optical ModulationAmplitude
(Peak-to-Peak) 1.0625 Gb/s
Maximum
Unit
Notes
0
dBm
FC-PI Std
49
µW
FC-PI Std
Note 1
OMA
31
µW
FC-PI Std
Note 2
Stressed Receiver Sensitivity
62.5µm fiber 2.125 Gb/s
1.0625 Gb/s
OMA
OMA
109
67
µW
µW
Note 3
Note 5
50 µm fiber 2.125 Gb/s
1.0625 Gb/s
OMA
OMA
96
55
µW
µW
Note 4
Note 5
12
dB
FC-PI Std
Return Loss
Signal Detect – De-Assert
PD
Signal Detect – Assert
PA
Signal Detect – Hysteresis
PA-PD
Minimum
Typical
-31
0.5
3.1
-17.5
dBm
-17.0
dBm
5
dB
Notes:
1. An OMA of 49 uW is approximately equal to an average power of -15dBm, and the OMA typical of 16 uW is approximately equal to an average
power of -20 dBm, assuming an Extinction Ratio of 9dB. Sensitivity measurements are made at eye center with BER = 1E-10.
2. An OMA of 31 is approximately equal to an average power of –17 dBm assuming an Extinction Ratio of 9 dB.
3. 2.125 Gb/s Stressed receiver vertical eye closure penalty (ISI) min. is 1.26 dB for 50 µm fiber and 2.03 dB for 62.5 µm fiber. Stressed receiver DCD
component min. (at TX) is 40 ps.
4. 1.0625 Gb/s Stressed receiver vertical eye closure penalty (ISI) min. is 0.96 dB for 50 µm fiber and 2.18 dB for 62.5 µm fiber. Stressed receiver DCD
component min. (at TX) is 80 ps.
5. These average power values are specified with an Extinction Ratio of 9 dB. The Signal Detect circuitry responds to OMA (peak-to-peak) power, not
to average power.
6. Please refer to the AFBR-5921ALZ Characterization Report for typical values.
Table 10. Transceiver Timing Characteristics
(TC = -10°C to +85°C, VCC = 3.3 V ± 10%)
Parameter
Symbol
TX Disable Assert Time
Minimum
Maximum
Unit
Notes
t_off
10
µs
1
TX Disable Negate Time
t_on
1
ms
2
Time to Initialize
t_init
30
ms
3
TX Disable to Reset
t_reset
µs
4
SD Assert Time
t_loss_on
100
µs
5
SD De-assert Time
t_loss_off
100
µs
6
10
Notes:
1. Time from rising edge of TX Disable to when the optical output falls below 10% of nominal.
2. Time from falling edge of TX Disable to when the modulated optical output rises above 90% of nominal.
3. From power on or negation of TX Fault using TX Disable.
4. Time TX Disable must be held high to reset TX Fault.
5. Time from optical signal loss to SD Assert. See transceiver timing diagrams.
6. Time from optical signal recovery to SD De-assert. See transceiver timing diagrams.
10
V CC > 2.97 V
V CC > 2.97 V
Tx_FAULT
Tx_FAULT
Tx_DISABLE
Tx_DISABLE
TRANSMITTED SIGNAL
TRANSMITTED SIGNAL
t_init
t_init
t-init: TX DISABLE DE-ASSERTED
t-init: TX DISABLE ASSERTED
Tx_FAULT
Tx_DISABLE
TRANSMITTED SIGNAL
t_off
t_on
t-off & t-on: TX DISABLE ASSERTED THEN NEGATED
OCCURANCE OF FAULT
Tx_FAULT
Tx_DISABLE
TRANSMITTED SIGNAL
* SFP SHALL CLEAR TX_FAULT IN
< t_init IF THE FAILURE IS TRANSIENT
t_reset
t_init*
t-reset: TX DISABLE ASSERTED THEN NEGATED, TX SIGNAL RECOVERED
OCCURANCE
OF LOSS
OPTICAL SIGNAL
Rx_SD
t_loss_on
t-loss-on & t-loss-off
Figure 5. Transceiver timing diagrams.
11
t_loss_off
AVAGO
AFBR-5921ALZ
17.8
4X
Figure 6a. Module drawing.
12
∅ 0.00 M A
20x Æ
0.81 ± 0.10
(0.032 ± 0.004)
2.29
2x ∅
MAX. (AREA FOR EYELETS)
(0.090)
25.75
(1.014)
∅ 0.00 M A
4x ∅
2x ∅ 1.40 ± 0.10 (NOTE 4)
(0.055 ± 0.004)
SEE NOTE 3
3.00
(0.118)
∅ 0.00 M A
1.40 ± 0.10
(NOTE 5)
(0.055 ± 0.004)
SEE DETAIL A
3.00
(0.118)
13.34
(0.525)
6.00
(0.236)
12.16
(0.479)
15.24 MINIMUM PITCH
(0.600)
5432 1
7.59
(0.299)
6 7 8 910
DETAIL A (3x)
10.16
(0.400)
1.80
(0.071)
SEE DETAIL B
4.57 (0.180)
7.11 (0.280)
3.56
(0.140)
1.00
(0.039)
8.89 (0.350)
9x 1.78
(0.070)
DETAIL B (4x)
Notes:
1. This page describes the recommended circuit board layout and front panel openings for SFF transceivers.
2. The hatched areas are keep-out areas reserved for housing standoffs. No metal traces allowed in keep-out areas.
3. This drawing shows extra pin holes for 2x10 pin transceivers. These extra holes are not required for HFBR-5921AL.
4. Holes for mounting studs must be tied to chassis ground.
5. Holes for housing leads must be tied to signal ground.
6. Dimensions are in millimeters (inches).
Figure 6b. Recommended SFF host board and front panel layout.
For product information and a complete list of distributors, please go to our web site:
www.avagotech.com
Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies in the United States and other countries.
Data subject to change. Copyright © 2005-2012 Avago Technologies. All rights reserved.
AV02-2199EN - February 24, 2012