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Электронный компонент: V23818-K305-V17

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Fiber Optics
SEPTEMBER 1999
V23818-K305-V17
Small Form Factor
Multimode 850 nm 1.0625 GBd Fiber Channel
1.3 Gigabit Ethernet 2x5 Transceiver
with VF-45TM (VolitionTM) Connector, with collar
Preliminary
FEATURES
Small Form Factor transceiver
RJ-45 style VF-45TM connector system
Half the size of SC Duplex 1x9 transceiver
Single power supply (3.3 V)
Extremely low power consumption
PECL differential inputs and outputs
System optimized for 62.5/50
m graded index fiber
Multisource footprint
Small footprint for high channel density
UL-94 V-0 certified
ESD Class 2 per MIL-STD 883 Method 3015
Voted as SG-connector by FC-Standard
Compliant with FCC (Class B) and EN 55022
For distances of up to 550 m
Absolute Maximum Ratings
Exceeding any one of these values may destroy the device
immediately.
Package Power Dissipation................................................ 1.5 W
Data Input Levels (PECL) ............................................V
CC
+0.5 V
Differential Data Input Voltage ............................................ 2.5 V
Operating Case Temperature . . . . . . . . . . . . . . . . . . . . . . . . 0 C to 70 C
Storage Ambient Temperature ............................ 40 C to 85C
Soldering Conditions, Temp/Time
(MIL-STD 883C, Method 2003) ............................. 250 C/5.5s
V
CC
max.............................................................................. 5.5 V
ECL-Output current SD ..................................................... 30 mA
ECL-Output current data ................................................... 50 mA
VolitionTM and VF-45TM are trademarks of 3M
(13.2)
.52
(14.5)
.571
(5.8)
.228
(13.45)
.53
(12.87)
.51
(9.46)
.372
(10.76)
.424
(3.1)
.12
(4.57)
.18
(7.11)
.28
(3)
.12
(3.1)
.122
(9.61)
.378
(10.16)
.4
(0.254)
.01
(0.38)
.015
(3.56)
.14
(1.778)
.07
(17.778)
.7
(1
.07)
.04
(19.75)
.778
(13.34)
.525
(10x)
0
M
(6x)
0.05
M
Circuit Board Layout
Recommended PCB thickness: max. (2.54) 0.1
6x
(1.4
0.1)
.055
0.04
10x
(0.81
0.1)
.032
0.04
Holes for
housing leads
2.
2. 4 optional package grounding tabs
10 pin module requires only 12 PCB holes.
Dimensions in (mm) inches
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 m or 50 m multi-
mode fiber with VF-45TM (VolitionTM) 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-45TM
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-45TM 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
0
70
C
Power Supply Voltage
V
CC
V
EE
3.1
3.3
3.5
V
Transmitter
Input Voltage Swing
|V
TD+
V
TD
| 300
900
mV
Data Input Low
Voltage
(2)
V
IL
V
CC
900
300
Input Data Rise/Fall
Time, 10%90%
t
R
, t
F
100
375
ps
Receiver
Input Center
Wavelength
C
770
860
nm
Fiber Optics
V23818-K305-V17, SFF, MM 850nm 1.0625 GBd, 1.3 GBE 2x5 Trx (VF-45), w. collar
3
Transmitter Electro-Optical Characteristics
Notes
1. Into multimode fiber, 62.5 m or 50 m diameter.
2. Laser power is shut down if power supply is below VTH and
switched on if power supply is above VTH after tRES.
Receiver Electro-Optical Characteristics
Notes
1. Average optical power at which the BER is 1 x 10E12. Measured
with a 2
7
1 NRZ PRBS and ER=9 dB.
2. An increase in optical power above the specified level will cause the
SIGNAL DETECT output to switch from a Low state to a High state.
3. A decrease in optical power below the specified level will cause the
SIGNAL DETECT to change from a High state to a Low state.
4. PECL compatible. Load is 50
into V
CC
2V. Measured under DC
conditions. For dynamic measurements a tolerance of 50 mV should
be added.
5. Supply current excluding Rx output load.
Regulatory Compliance
Transmitter Symbol Min. Typ. Max. Units
Launched Power
(Average)
(1)
P
O
10
4
dBm
Center Wavelength
C
830
850
860
nm
Spectral Width (RMS)
l
0.85
Relative Intensity Noise
RIN
117
dB/Hz
Extinction Ratio (Dynamic)
ER
9
dB
Reset Threshold
(2)
V
TH
2.9
V
Reset Time Out
(2)
t
RES
140
240
560
ms
Rise Time, 20%80%
t
R
0.26
ns
Supply Current
75
mA
Receiver
Symbol
Min.
Typ.
Max.
Units
Sensitivity
(Average Power)
(1)
P
IN
19
17
dBm
Saturation
(Average Power)
P
SAT
0
Signal Detect
Assert Level
(2)
P
SDA
24
20
Signal Detect
Deassert Level
(3)
P
SDD
30
27
Signal Detect
Hysteresis
P
SDA
P
SDD
3
dB
Signal Detect
Assert Time
t
ASS
100
s
Signal Detect
Deassert Time
t
DAS
350
Output Low Voltage
(4)
V
OL
V
CC
1950
1620
mV
Output High Voltage
(4)
V
OH
V
CC
1100
720
Output Data Rise/Fall
Time, 20%80%
t
R
, t
F
375
ps
Return Loss
of Receiver
A
RL
12
dB
Supply current
(5)
60
mA
Feature
Standard
Comments
Electrostatic Discharge
(ESD) to the Electrical
Pins
MIL-STD 883C
Method 3015.4
Class 1 (>1000 V)
Immunity:
Electrostatic Discharge
(ESD) to the Duplex SC
Receptacle
EN 61000-4-2
IEC 1000-4-2
Discharges of 15kV
with an air discharge
probe on the recepta-
cle cause no damage.
Immunity:
Radio Frequency
Electromagnetic Field
EN 61000-4-3
IEC 1000-4-3
With a field strength
of 10 V/m rms, noise
frequency ranges
from 10 MHz to
1 GHz. No effect on
transceiver perfor-
mance between the
specification limits.
Emission:
Electromagnetic
Interference (EMI)
FCC Class B
EN 55022
Class B CISPR 22
Noise frequency
range:
30 MHz to 1 GHz
Fiber Optics
V23818-K305-V17, SFF, MM 850nm 1.0625 GBd, 1.3 GBE 2x5 Trx (VF-45), w. collar
4
LASER SAFETY
This multimode Gigabit Ethernet transceiver is a Class 1 laser
product. It complies with IEC 825-1 and FDA 21 CFR 1040.10
and 1040.11. The transceiver must be operated under recom-
mended operating conditions. Because the transceiver design
is designed to be inherently eye safe, it does not require open
fiber control thus eliminating complex electronics or mechanics.
Caution
The use of optical instruments with this product will increase
eye hazard!
General Restrictions
Classification is valid only if the module is operated within the
specified temperature and voltage limits. The system using the
module must provide power supply protection that guarantees
that the system power source will cease to provide power if the
maximum recommended operation limit or more is detected on
the +3.3 V at the power source. The case temperature of the
module must be in the temperature range given in the recom-
mended operating limits. These limits guarantee the laser
safety.
Usage Restrictions
The optical ports of the modules shall be terminated with an
optical connector or with a dust plug.
Note
Failure to adhere to the above restrictions could result in a modifica-
tion that is considered an act of "manufacturing," and will require,
under law, recertification of the modified product with the U.S. Food
and Drug Administration (ref. 21 CFR 1040.10 (i)).
Laser Data
Required Labels
Laser Emission
Pin Description
Wavelength
850 nm
Total output power (as defined by IEC: 50 mm
aperture at 10 cm distance)
<400 W
Total output power (as defined by FDA: 7 mm
aperture at 20 cm distance)
<70 W
Beam divergence
12
Class 1 Laser Product
IEC
Complies with 21 CFR
1040.10 and 1040.11
FDA
10 9 8 7 6
1 2 3 4 5
Tx
Rx
Indication of
laser aperture
and beam
Pin Name
Level/Logic Pin# Description
V
EEr
Receiver Signal Ground N/A
1
V
CCr
Receiver Power Supply
N/A
2
SD
Signal Detect
PECL
3
Normal Operation: Logic "1" Output, represents that light is present at receiver input
Fault Condition: Logic "0" Output
RD-
Received Data Out Not
PECL
4
RD+
Received Data Out
PECL
5
V
CCt
N/A
6
Transmitter Power Supply
V
EEt
N/A
7
Transmitter Signal Ground
TDis
TTL
8
Optional use for Laser based products only.
TD+
Transmit Data
PECL
9
Transmitter Data In
TD-
Transmit Data Not
PECL
10
Transmitter Data In
MS
MS
N/A
MS
Mounting Studs
The mounting studs are provided for transceiver mechanical attachment to the cir-
cuit board. They also provide an optional connection of the transceiver to the equip-
ment chassis ground.
The holes in the circuit board must be tied to chassis ground.
Fiber Optics
V23818-K305-V17, SFF, MM 850nm 1.0625 GBd, 1.3 GBE 2x5 Trx (VF-45), w. collar
5
APPLICATION NOTE
Multimode 850nm Gigabit Ethernet 2x5 Transceiver
Transmitter
Driver
Receiver
Post
Amplifier
Pre-
Amp
SFF Transceiver
4
5
2
6
9
10
7
VEE t
TD-
TD+
VCC t
VCC r
RD+
RD-
C4
100R*
SD
3
1
VEE r
R1
R2
R3
C6
C7
C9
C8
C5
L2
C3
C2
L1
C1
* for GBit versions only
C10
C11
L1/2
= 1 ... 4.7
H
C1/2/6/7/10/11= 10 nF
C3
= 4.7 ... 10
F
C4/5
= 4.7 ... 10
F
C8
= 100 nF
R1/2/3= 270