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參數(shù)資料
| 型號(hào)： | V23818-K305-V17 |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類： | 網(wǎng)絡(luò)接口 |
| 英文描述： | DATACOM, ETHERNET TRANSCEIVER, XFO |
| 文件頁(yè)數(shù)： | 2/6頁(yè) |
| 文件大?。?/td> | 182K |
| 代理商： | V23818-K305-V17 |
Fiber Optics
V23818-K305-V17 SFF MM 850nm 1.0625 GBd, 1.3 GBE 2x5 Trx (VF-45), w. collar
2
DESCRIPTION
The Infineon Gigabit Ethernet multimode transceiver—part of
Infineon Small Form Factor transceiver family—is based on the
Physical Medium Depend (PMD) sublayer and baseband
medium, type 1000BASE-SX (short wavelength).
The appropriate fiber optic cable is 62.5 μm or 50 μm multi-
mode fiber with VF-45 (Volition) connector.
Operating range for 1000BASE-SX over each optical fiber
type
The Infineon Gigabit Ethernet multimode transceiver is a single
unit comprised of a transmitter, a receiver, and an VF-45
receptacle. This design frees the customer from many align-
ment and PC board layout concerns.
This transceiver supports the innovative Volition connectoriza-
tion concept, which competes with UTP/CAT 5 solutions. It is
compatible with RJ-45 style backpanels for fiber-to-the-desktop
applications while providing the advantages of fiber optic tech-
nology. The receptacle accepts the new SG/VF-45 connector.
The Small Form Factor is specially developed for distances of
up to 550 m.
The module is designed for low cost LAN, WAN, and Gigabit
Ethernet applications. It can be used as the network end
device interface in mainframes, workstations, servers, and
storage devices, and in a broad range of network devices such
as bridges, routers, hubs, and local and wide area switches.
This transceiver operates at 1.25 Gbits per second from a single
power supply (+3.3 V). The full differential data inputs and out-
puts are PECL compatible.
Functional Description of 2x5 Pin Row Transceiver
This transceiver is designed to transmit serial data via
multimode cable.
Functional Diagram
The receiver component converts the optical serial data into
PECL compatible electrical data (RD and RDnot). The Signal
Detect (SD, active high) shows whether an optical signal is
present.
The transmitter converts PECL compatible electrical serial data
(TD and TDnot) into optical serial data. Data lines are differen-
tially 100
terminated.
The transmitter contains a laser driver circuit that drives the
modulation and bias current of the laser diode. The currents are
controlled by a power control circuit to guarantee constant out-
put power of the laser over temperature and aging. The power
control uses the output of the monitor PIN diode (mechanically
built into the laser coupling unit) as a controlling signal, to pre-
vent the laser power from exceeding the operating limits.
Single fault condition is ensured by means of an integrated
automatic shutdown circuit that disables the laser when it
detects transmitter failures. A reset is only possible by turning
the power off, and then on again.
The transceiver contains a supervisory circuit to control the
power supply. This circuit makes an internal reset signal when-
ever the supply voltage drops below the reset threshold. It
keeps the reset signal active for at least 140 milliseconds after
the voltage has risen above the reset threshold. During this
time the laser is inactive.
TECHNICAL DATA
The electro-optical characteristics described in the following
tables are valid only for use under the recommended operating
conditions.
Recommended Operating Conditions
Notes
1. For V
CC
–V
EE
(min., max.). 50% duty cycle. The supply current does
not include the load drive current of the receiver output. Add max.
45 mA for the three outputs. Load is 50
to V
CC
–2 V.
2. Data inputs are AC coupled with 100
differential termination built
into the transceiver.
Fiber type
Minimum range (meters)
62.5 micron MFF
2 to 260
50.0 micron MFF
2 to 550
10 micron SFF
Not Supported
Laser
Driver
Power
Control
Receiver
o/e
o/e
Laser
e/o
Rx Coupling Unit
TD–
TD+
RD–
RD+
SD
Laser Coupling Unit
Multimode Fiber
LEN
Monitor
Automatic
Shut-Down
Parameter
Symbol
Min. Typ. Max. Units
Case Temperature
T
C
V
CC
–V
EE
0
70
°
C
V
Power Supply Voltage
3.1
3.3
3.5
Transmitter
Input Voltage Swing
|V
TD+
–V
TD
–| 300
V
IL
–V
CC
900
mV
Data Input Low
Voltage
(2)
–900
–300
Input Data Rise/Fall
Time, 10%–90%
t
R
, t
F
100
375
ps
Receiver
Input Center
Wavelength
λ
C
770
860
nm
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