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QFBR-53A5VFM 데이터시트 PDF




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부품번호 QFBR-53A5VFM 기능
기능 (QFBR-53A5VEM / QFBR-53A5VFM) 3.3 V 1x9 Fiber Optic Transceivers
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QFBR-53A5VFM 데이터시트, 핀배열, 회로
Agilent HFBR-53A5VEM/HFBR-53A5VFM
3.3 V 1 x 9 Fiber Optic Transceivers
for Gigabit Ethernet Low Voltage
Data Sheet
Description
The HFBR-53A5VM transceivers
from Agilent Technologies allow the
system designer to implement a
range of solutions for multimode
Gigabit Ethernet applications.
The overall Agilent transceiver
product consists of three sections:
the transmitter and receiver optical
subassemblies, an electrical
subassembly, and the package
housing which incorporates a
duplex SC connector receptacle.
Transmitter Section
The transmitter section of the
HFBR-53A5VEM/FM consists of an
850 nm Vertical Cavity Surface
Emitting Laser (VCSEL) in an
optical subassembly (OSA), which
mates to the fiber cable. The OSA is
driven by a custom, silicon bipolar
IC which converts differential PECL
compatible logic signals into an
analog laser diode drive current.
The high speed output lines are
internally ac-coupled and
differentially terminate with a 100
resistor.
Receiver Section
The receiver of the
HFBR-53A5VEM/FM includes a
GaAs PIN photo-diode mounted
together with a custom, silicon
bipolar transimpedance
preamplifier IC in an OSA. This
OSA is mated to a custom silicon
bipolar circuit that provides post-
amplification and quantization.
The post-amplifier also includes a
Signal Detect circuit which pro-
vides a TTL logic-high output
upon detection of a usable input
optical signal level. The high
speed output lines are internally
ac-coupled.
Features
• Compliant with specifications for
IEEE- 802.3z Gigabit Ethernet
• Industry standard mezzanine height
1 x 9 package style with integral
duplex SC connector
• Performance
HFBR-53A5VEM/FM:
220 m links in 62.5/125 µm MMF
160 MHz* km cables
275 m links in 62.5/125 µm MMF
200 MHz* km cables
500 m links in 50/125 µm MMF
400 MHz* km cables
550 m links in 50/125 µm MMF
500 MHz* km cables
• IEC 60825-1 Class 1/CDRH Class I
laser eye safe
• Single +3.3 V power supply
operation with PECL compatible
logic interfaces and TTL Signal
Detect
• Wave solder and aqueous wash
process compatible
Applications
• Switch to switch interface
• Switched backbone applications
• High speed interface for file servers
• High performance desktops
Related Products
• Physical layer ICs available for
optical or copper interface
(HDMP-1636A/1646A)
• Quad Serdes IC available for high-
density interface
• Versions of this transceiver module
also available for +5 V operation
(HFBR/HFCT-53D5)
• MT-RJ SFF fiber optic transceivers
for Gigabit Ethernet
(HFBR/HFCT-5912E)
• Gigabit Interface Converters (GBIC)
Gigabit Ethernet SX-HFwBwRw-5.D6a0t1aS/ heet4U.com
LX-HFCT-5611
www.DataSheet4U.com
www.DataSheet4U.com




QFBR-53A5VFM pdf, 반도체, 판매, 대치품
APPLICATION SUPPORT
Optical Power Budget and Link
Penalties
The worst-case Optical Power
Budget (OPB) in dB for a fiber-
optic link is determined by the
difference between the minimum
transmitter output optical power
(dBm avg) and the lowest
receiver sensitivity (dBm avg).
This OPB provides the necessary
optical signal range to establish a
working fiber-optic link. The OPB
is allocated for the fiber-optic
cable length and the corre-
sponding link penalties. For
proper link performance, all
penalties that affect the link
performance must be accounted
for within the link optical power
budget. The Gigabit Ethernet
IEEE 802.3z standard identifies,
and has modeled, the
contributions of these OPB
penalties to establish the link
length requirements for 62.5/125 µm
and 50/125 µm multimode fiber
usage. Refer to the IEEE 802.3z
standard and its supplemental
documents that develop the
model, empirical results and final
specifications.
Data Line Interconnections
Agilent’s HFBR-53A5VEM/FM
fiber-optic transceiver is designed
for compatible PECL signals. The
transmitter inputs are internally
ac-coupled to the laser driver
circuit from the transmitter input
pins (pins 7, 8). The transmitter
driver circuit for the laser light
source is an ac-coupled circuit.
This circuit regulates the output
optical power. The regulated light
output will maintain a constant
output optical power provided
the data pattern is reasonably
balanced in duty factor. If the
data duty factor has long, con-
tinuous state times (low or high
data duty factor), then the output
optical power will gradually
change its average output optical
power level to its pre-set value.
The receiver section is internally
ac-coupled between the pre-
amplifier and the post-amplifier
stages. The actual Data and Data-
bar outputs of the post-amplifier
are ac-coupled to their respective
output pins (pins 2, 3). Signal
Detect is a single-ended, TTL
output signal that is dc-coupled
to pin 4 of the module. Signal
Detect should not be ac-coupled
externally to the follow-on
circuits because of its infrequent
state changes.
Caution should be taken to
account for the proper intercon-
nection between the supporting
Physical Layer integrated circuits
and this HFBR-53A5VEM/FM
transceiver. Figure 3 illustrates a
recommended interface circuit
for interconnecting to a dc PECL
compatible fiber-optic
transceiver.
Eye Safety Circuit
For an optical transmitter device
to be eye-safe in the event of a
single fault failure, the transmit-
ter must either maintain normal,
eye-safe operation or be disabled.
In the HFBR-53A5VEM/FM there
are three key elements to the
laser driver safety circuitry: a
monitor diode, a window detector
circuit, and direct control of the
laser bias. The window detection
circuit monitors the average
optical power using the monitor
diode. If a fault occurs such that
the transmitter DC regulation
circuit cannot maintain the preset
bias conditions for the laser
emitter within ± 20%, the
transmitter will automatically be
disabled. Once this has occurred,
only an electrical power reset will
allow an attempted turn-on of the
transmitter.
Signal Detect
The Signal Detect circuit provides
a deasserted output signal that
implies the link is open or the
transmitter is OFF as defined by
the Gigabit Ethernet specification
IEEE 802.3z, Table 38.1. The
Signal Detect threshold is set to
transition from a high to low state
between the minimum receiver
input optional power and –30 dBm
avg. input optical power
indicating a definite optical fault
(e.g., unplugged connector for the
receiver or transmitter, broken
fiber, or failed far-end transmitter
or data source). A Signal Detect
indicating a working link is
functional when receiving
encoded 8B/10B characters. The
Signal Detect does not detect
receiver data error or error-rate.
Data errors are determined by
Signal processing following the
transceiver.
Electromagnetic Interference (EMI)
One of a circuit board designer’s
foremost concerns is the control
of electromagnetic emissions
from electronic equipment.
Success in controlling generated
Electromagnetic Interference
(EMI) enables the designer to
pass a governmental agency’s
EMI regulatory standard; and
more importantly, it reduces the
possibility of interference to
neighboring equipment. The EMI
performance of an enclosure
using these transceivers is
dependent on the chassis design.
Agilent encourages using
standard RF suppression
practices and avoiding poorly
EMI-sealed enclosures.
4

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QFBR-53A5VFM 전자부품, 판매, 대치품
HFBR-53A5VEM/FM, 850 nm VCSEL
Transmitter Optical Characteristics
(TA = 0°C to +70°C, VCC = 3.14 V to 3.47 V)
Parameter
Symbol Min. Typ. Max. Unit
Reference
Output Optical Power
50/125 µm, NA = 0.20 Fiber
POUT
–9.5
–4 dBm avg. 1
Output Optical Power
62.5/125 µm, NA = 0.275 Fiber
POUT
–9.5
–4 dBm avg. 1
Optical Extinction Ratio
9 dB 2
Center Wavelength
Spectral Width – rms
λC 830 850 860 nm
σ 0.85 nm rms
Optical Rise/Fall Time
RIN12
Coupled Power Ratio
tr/tf
CPR 9
0.26 ns
–117 dB/Hz
dB
3, 4, Figure 1
5
Total Transmitter Jitter
Added at TP2
227 ps
6
Receiver Optical Characteristics
(TA = 0°C to +70°C, VCC = 3.14 V to 3.47 V)
Parameter
Symbol
Min.
Typ.
Max.
Input Optical Power
Stressed Receiver Sensitivity
PIN
62.5 µm
50 µm
–17
0
–12.5
–13.5
Stressed Receiver Eye
Opening at TP4
201
Receive Electrical 3 dB
Upper Cutoff Frequency
1500
Operating Center Wavelength
λC
770
860
Return Loss
12
Signal Detect – Asserted
PA
–17
Signal Detect – Deasserted PD –30
Signal Detect – Hysteresis
PA – PD
1.5
Unit
dBm avg.
dBm avg.
dBm avg.
ps
MHz
nm
dB
dBm avg.
dBm avg.
dB
Reference
7
8
8
6, 9
10
11
12
12
12
Notes:
1. The maximum Optical Output Power complies with the IEEE 802.3z specification, and is class 1 laser eye safe.
2. Optical Extinction Ratio is defined as the ratio of the average optical power of the transmitter in the high (“1”) state to the low (“0”) state.
Extinction Ratio shall be measured using the methods specified in TIA/EIA.526.4A. This measurement may be made with the node transmitting a
36A.3 data pattern. The Saturation Ratio is measured under fully modulated conditions with worst case reflections. A36A.3 data pattern is a
repeating K28.7 data pattern which generates a 125 mHz square wave.
3. These are unfiltered 20-80% values.
4. Laser transmitter pulse response characteristics are specified by an eye diagram (Figure 1). The characteristics include rise time, fall time, pulse
overshoot, pulse undershoot, and ringing, all of which are controlled to prevent excessive degradation of the receiver sensitivity. These
parameters are specified by the referenced Gigabit Ethernet eye diagram using the required filter. The output optical waveform complies with the
requirements of the eye mask discussed in section 38.6.5 and Fig. 38-2 of IEEE 802.3z.
5. CPR is measured in accordance with EIA/TIA-526-14A as referenced in 802.3z, section 38.6.10.
6. TP refers to the compliance point specified in 802.3z, section 38.2.1.
7. The receive sensitivity is measured using a worst case extinction ratio penalty while sampling at the center of the eye.
8. The stressed receiver sensitivity is measured using the conformance test signal defined in 802.3z, section 38.6.11. The conformance test signal is
conditioned by applying deterministic jitter and intersymbol interference.
9. The stressed receiver jitter is measured using the conformance test signal defined in 802.3z, section 38.6.11 and set to an average optical power
0.5 dB greater than the specified stressed receiver sensitivity.
10. The 3 dB electrical bandwidth of the receiver is measured using the technique outlined in 802.3z, section 38.6.12.
11. Return loss is defined as the minimum attenuation (dB) of received optical power for energy reflected back into the optical fiber.
12. With valid 8B/10B encoded data.
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관련 데이터시트

부품번호상세설명 및 기능제조사
QFBR-53A5VFM

(QFBR-53A5VEM / QFBR-53A5VFM) 3.3 V 1x9 Fiber Optic Transceivers

Agilent Technologies
Agilent Technologies

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