參數(shù)資料
型號： HFCT-5207
英文描述： 622 Mb/s Single Mode Fiber Transceiver for ATM, SONET OC-12/SDH STM-4(應(yīng)用于ATM, SONET OC-12/SDH STM-4的622 Mb/s單模式光收發(fā)器)
中文描述： 622 Mb / s的對ATM，SONET的OC-12/SDH的STM - 4單模光纖收發(fā)器（應(yīng)用于自動取款機(jī)，SONET的OC-12/SDH的STM - 4的622 Mb / s的單模式光收發(fā)器）
文件頁數(shù)： 4/12頁
文件大?。?/td> 170K
代理商： HFCT-5207
4
unwanted electrical noise. Locate
termination at the received signal
end of the transmission line. The
length of these lines should be
kept short and of equal length to
prevent pulse-width distortion
and data-to-clock timing skew
from occurring. For the high
speed signal lines, differential
signals should be used, not
single-ended signals, and these
differential signals need to be
loaded symmetrically to prevent
unbalanced currents from flowing
which will cause distortion in the
signal.
Maintain a solid, low inductance
ground plane for returning signal
currents to the power supply.
Multi-layer plane printed circuit
board is best for distribution of
V
CC
, returning ground currents,
forming transmission lines and
shielding. Also, it is important to
suppress noise from influencing
the fiber-optic transceiver per-
formance, especially the receiver
and the clock recovery circuits.
Proper power supply filtering of
V
CC
for this transceiver is
accomplished by using the
recommended, separate filter
circuits shown in Figure 4. These
filter circuits suppress V
CC
noise
of 50 mV peak-to-peak or less
over a broad frequency range.
This prevents receiver sensitivity
degradation as well as false-lock
or loss-of-lock in the clock
recovery circuitry due to V
CC
noise. It is recommended that
surface-mount components be
used. Use tantalum capacitors for
the 10
μ
F capacitors and mono-
lithic, ceramic bypass capacitors
for the 0.1
μ
F capacitors. Also, it
is recommended that a surface-
mount coil inductor of 1
μ
H be
used. Ferrite beads can be used
to replace the coil inductors when
using quieter V
CC
supplies, but a
coil inductor is recommended
over a ferrite bead. Coils with a
low, series dc resistance
(<0.7
) and high, self-
resonating frequency are recom-
mended. All power supply
components need to be placed
physically next to the V
CC
pins of
the receiver and transmitter. Use
a good, uniform ground plane
with a minimum number of holes
to provide a low-inductance
ground current return for the
power supply currents.
In addition to these recommenda-
tions, Hewlett- Packard’s Applica-
tion Engineering staff is available
for consulting on best layout
practices with various vendors
mux/demux, clock generator, and
Figure 4. Recommended Circuit Schematic.
FILTER
PINS
R7
R6
R8
V
CC
C3
C4
L1
L2
C1
C2
R15
R1
R4
C5
R3
R2
V
CC
TERMINATE AT
FIBER-OPTIC
TRANSCEIVER
INPUTS
TERMINATE
AT THE
DEVICE
INPUTS
C8
R12
R10
R9
R14
C7
R11
R13
V
CC
CLK
CLK
R5
C6
1
REF CLK
2
LCK
3
CLK
4
CLK
5*
L
MON
6*
L
MON
7*
Tx
DIS
8*
NC
P
MON
18
17
RD
16
RD
15
SD
14
13
12
TD
11
TD
10
Rx
V
EE
Rx
V
CC
Tx
V
CC
Tx
V
EE
TERMINATE
AT CLOCK
INPUTS
REF
CLK
HFCT-5207
TOP VIEW
NO INTERNAL
CONNECTION
NOTES:
THE SPLIT-LOAD TERMINATIONS FOR PECL SIGNALS NEED TO BE LOCATED AT THE INPUT OF DEVICES
RECEIVING THOSE PECL SIGNALS.
.
R2 = R3 = R5 = R7 = R9 = R11 = R13 = 82
.
C1 = C2 = C3 = C5 = C6 = C7 = 0.1 μF.
C4 = C8 = 10 μF.
L1 = L2 = 1 μH COIL.
R15 = 10 k
.
OPTIONAL
RD
RD
SD
VCC
TD
TD
Rx
Tx
NO INTERNAL
CONNECTION
FOR THE SINGLE MODE HFCT-5207 TRANSCEIVER, PINS 5–9 ARE USED FOR LASER DIODE BIAS
AND OPTICAL POWER MONITORING AS WELL AS TO PROVIDE A TRANSMITTER DISABLE FUNCTION.
* FOR THE MULTIMODE HFBR-5207 TRANSCEIVER, PINS 5–9 ARE NOT USED.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HFCT5207B 制造商:Hewlett Packard Co 功能描述:Fiber Optic Transceiver
HFCT-5207B 制造商:Hewlett Packard Co 功能描述:Fiber Optic Transceiver
HFCT-5208AEM 功能描述:光纖發(fā)射器、接收器、收發(fā)器 1x9 622Mb/s IR ExtTe mp Txcvr Metal RoHS:否 制造商:Omron Electronics 產(chǎn)品:Transmitters 數(shù)據(jù)速率:3.5 Gbps 波長:850 nm 最大工作溫度: 最小工作溫度: 封裝 / 箱體: 封裝:
HFCT-5208AEMZ 功能描述:光纖發(fā)射器、接收器、收發(fā)器 1x9 622Mb/s IR ExTp Txc Metal RoHS RoHS:否 制造商:Omron Electronics 產(chǎn)品:Transmitters 數(shù)據(jù)速率:3.5 Gbps 波長:850 nm 最大工作溫度: 最小工作溫度: 封裝 / 箱體: 封裝:
HFCT-5208AFM 功能描述:光纖發(fā)射器、接收器、收發(fā)器 1x9 622Mb/s IR ExtTe mp Txcvr Metal RoHS:否 制造商:Omron Electronics 產(chǎn)品:Transmitters 數(shù)據(jù)速率:3.5 Gbps 波長:850 nm 最大工作溫度: 最小工作溫度: 封裝 / 箱體: 封裝:
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