參數(shù)資料
型號(hào)： HFBR-5208M
英文描述： 1 x 9 Fiber Optic Transceivers for 622 Mb/s ATM/SONET/SDH Applications(應(yīng)用于622 Mb/s ATM/SONET/SDH 的1 x 9光纖收發(fā)器)
中文描述： 1 × 9光纖收發(fā)器為622字節(jié)/秒的ATM / SONET / SDH應(yīng)用（應(yīng)用于622 Mb / s的ATM機(jī)/的SONET / SDH的1 × 9光纖收發(fā)器）
文件頁(yè)數(shù)： 2/20頁(yè)
文件大?。?/td> 656K
代理商： HFBR-5208M
2
Receiver Section
The receiver contains an InGaAs
PIN photodiode mounted together
with a custom, silicon bipolar
transimpedance preamplifier IC in
an OSA. This OSA is mated to a
custom, silicon bipolar circuit
providing post amplification and
quantization and optical signal
detection.
The custom, silicon bipolar circuit
includes a Signal Detect circuit
which provides a PECL logic high
state output upon detection of a
usable input optical signal level.
This single-ended PECL output is
designed to drive a standard
PECL input through normal 50
PECL load.
Applications Information
Typical BER Performance of
HFBR-5208M Receiver versus
Input Optical Power Level
The HFBR/HFCT-5208M
transceiver can be operated at
Bit-Error-Ratio conditions other
than the required BER = 1 x 10
-10
of the 622 MBd ATM Forum
622.08 Mb/s Physical Layer
Standard and the ANSI T1.646a.
The typical trade-off of BER
versus Relative Input Optical
Power is shown in Figure 1. The
Relative Input Optical Power in
dB is referenced to the Input
Optical Power parameter value in
the Receiver Optical
Characteristics table. For better
BER condition than 1 x 10
-10
,
more input signal is needed (+dB).
For example, to operate the
HFBR-5208M at a BER of 1 x 10
-12
,
the receiver will require an input
signal approximately 0.6 dB higher
than the -26 dBm level required for
1 x 10
-10
operation, i.e. -25.4 dBm.
An informative graph of a typical,
short fiber transceiver link per-
formance can be seen in Figure 2.
This figure is useful for designing
short reach links with time-based
jitter requirements. This figure
indicates Relative Input Optical
Power versus Sampling Time
Position within the receiver
output data eye-opening. The
given curves are at a constant bit-
error-ratio (BER) of 10
-10
for four
different signaling rates, 155 MBd,
311 MBd, 622 MBd and 650 MBd.
These curves, called “tub”
diagrams for their shape, show
the amount of data eye-opening
time-width for various receiver
input optical power levels. A
wider data eye-opening provides
more time for the clock recovery
circuit to operate within without
creating errors. The deeper the
tub is indicates less input optical
power is needed to operate the
receiver at the same BER
condition. Generally, the wider
and deeper the tub is the better.
The Relative Input Optical Power
amount (dB) is referenced to the
absolute level (dBm avg.) given
in the Receiver Optical
Characteristics table. The 0 ns
sampling time position for this
Figure 2 refers to the center of the
Baud interval for the particular
signaling rate. The Baud interval
is the reciprocal of the signaling
rate in MBd. For example, at 622
MBd the Baud interval is 1.61 ns,
at 155 MBd the Baud interval is
6.45 ns. Test conditions for this
tub diagram are listed in Figure 2.
The HFBR/HFCT-5208M receiver
input optical power requirements
vary slightly over the signaling
rate range of 20 MBd to 700 MBd
for a constant bit-error-ratio
(BER) of 10
-10
condition. Figure 3
illustrates the typical receiver
relative input optical power varies
by <0.7 dB over this full range.
This small sensitivity variation
allows the optical budget to
remain nearly constant for
designs that make use of the
broad signaling rate range of the
HFBR/HFCT-5208M. The curve
has been normalized to the input
optical power level (dBm avg.) of
the receiver for 622 MBd at center
of the Baud interval with a BER of
10
-10
. The data patterns that can
be used at these signaling rates
should be, on average, balanced
duty factor of 50%. Momentary
excursions of less or more data
duty factor than 50% can occur,
but the overall data pattern must
remain balanced. Unbalanced
data duty factor will cause
excessive pulse-width distortion,
or worse, bit errors. The test
conditions are listed in Figure 3.
Recommended Circuit
Schematic
When designing the HFBR/HFCT-
5208M circuit interface, there are
a few fundamental guidelines to
follow. For example, in the
Recommended Circuit Schematic,
Figure 4, the differential data
lines should be treated as 50 ohm
Microstrip or stripline
transmission lines. This will help
to minimize the parasitic
inductance and capacitance
effects. Proper termination of the
differential data signal will
prevent reflections and ringing
which would compromise the
signal fidelity and generate
unwanted electrical noise. Locate
termination at the received signal
end of the transmission line. The
Figure 1. Relative Input Optical
Power - dBm Average.
10
-2
10
-3
10
-4
10
-5
10
-6
10
-7
10
-8
10
-9
10
-10
10
-11
10
-12
10
-13
10
-14
10
-15
-5
LINEAR EXTRAPOLATION OF
10
-4
THROUGH 10
-7
DATA
ACTUAL DATA
B
-4 -3 -2
-1
0
1
2
3
相關(guān)PDF資料
PDF描述
HFCT-5208M 1 x 9 Fiber Optic Transceivers for 622 Mb/s ATM/SONET/SDH Applications(應(yīng)用于622 Mb/s ATM/SONET/SDH 的1 x 9光纖收發(fā)器)
HFBR-5208 1300 nm LED Transceiver for ATM, SONET/SDH 622 Mb/s and General Purpose 155 - 650 Mb/s(應(yīng)用于ATM, SONET/SDH 622 Mb/s和 通用155 - 650 Mb/s的1300 nm LED收發(fā)器)
HFBR-5303 850 nm VCSEL 1x9 Transceiver(850 nm VCSEL 1x9 收發(fā)器)
HFBR-53D3 850 nm VCSEL 1x9 Transceiver(850 nm VCSEL 1x9 收發(fā)器)
HFBR-53D5 850 nm VCSEL 1x9 Transceiver(850 nm VCSEL 1x9 收發(fā)器)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HFBR-5208MZ 功能描述:光纖發(fā)射器、接收器、收發(fā)器 1x9 622Mb/s SR Txcvr Metal RoHS RoHS:否 制造商:Omron Electronics 產(chǎn)品:Transmitters 數(shù)據(jù)速率:3.5 Gbps 波長(zhǎng):850 nm 最大工作溫度: 最小工作溫度: 封裝 / 箱體: 封裝:
HFBR-5208XX 制造商:AGILENT 制造商全稱:AGILENT 功能描述:Agilent HFBR/HFCT-5208M 1 x 9 Fiber Optic Transceivers for 622 Mb/s ATM/SONET/SDH Applications
HFBR-5208Z 功能描述:光纖發(fā)射器、接收器、收發(fā)器 622Mbps ATM MMF 1x9 Trxcvr RoHS RoHS:否 制造商:Omron Electronics 產(chǎn)品:Transmitters 數(shù)據(jù)速率:3.5 Gbps 波長(zhǎng):850 nm 最大工作溫度: 最小工作溫度: 封裝 / 箱體: 封裝:
HFBR-5301 制造商:HP 制造商全稱:Agilent(Hewlett-Packard) 功能描述:Fibre Channel 133 MBd and Fibre Channel 133 MBd and Cost 1x9 Package Style
HFBR-5301AZT 制造商:Avago Technologies 功能描述:FIBRE CHANNEL 133 MBD TRANSCEIVER 1X9 - Tape and Reel
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