V23818-K305-L17/L57
(*)
Small Form Factor
Multimode 850 nm 1.0625 GBd Fibre Channel
1.25 Gigabit Ethernet 2x5 Transceiver
with LC™ Connector
Dimensions in mm [inches]
a) recommended bezel position
shown design with collar
V23
818
-K3
05-
L57
FEATURES
• Small Form Factor transceiver
• Full compliant with Fibre Channel Standard
• Excellent EMI performance
• RJ-45 style LC™ connector system
• Half the size of SC Duplex 1x9 transceiver
• Single power supply (3.3 V)
•
•
•
•
•
•
•
•
•
•
•
Extremely low power consumption of 445 mW typical
PECL and LVPECL differential inputs and outputs
System optimized for 62.5/50 µm graded index fiber
Multisource 2x5 footprint
Small size for high port density
UL-94 V-0 certified
ESD Class 1 per MIL-STD 883D Method 3015.7
Compliant with FCC (Class B) and EN 55022
For distances of up to 700 m
Class 1 FDA and IEC laser safety compliant
AC/AC coupling in accordance to SFF MSA
*) Ordering Information
Input
DC
AC
Output Signal detect
DC
AC
TTL
Voltage
3.3 V
Part Number
V23818-K305-L17
V23818-K305-L57
LC™ is a trademark of Lucent
Fiber Optics
MARCH 2002
Absolute Maximum Ratings
Exceeding any one of these values may destroy the device
immediately.
Package Power Dissipation................................................0.5 W
Data Input Levels (PECL) ............................................V
CC
+0.5 V
Differential Data Input Voltage ............................................ 2.5 V
Storage Ambient Temperature............................. –40° C to 85°C
Soldering Conditions, Temp/Time
(MIL
-STD 883C, Method 2003) ........................... 250°C/ 5.5 s
V
CC
max ............................................................................. 5.5 V
ECL-Output current data ...................................................50 mA
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), Fibre Channel
FC-PI 100-M5-SN-I, 100-M6-SN-I
FC-PH2 100-M5-SN-I, FC-PH2 100-M6-SN-I.
The appropriate fiber optic cable is 62.5 µm or 50 µm multi-
mode fiber with LC™ connector.
Operating range for over each optical fiber type
Fiber type
62.5 micron MMF
50.0 micron MMF
Min.
(meters)
0.5
0.5
Typ.
(meters)
2 to 300
2 to 550
Max.
(meters)
400
700
Functional Description of 2x5 Pin Row Transceiver
This transceiver is designed to transmit serial data via
multimode cable.
Functional Diagram
Automatic
Shut-Down
TxDis
LEN
TD−
TD+
Laser
Driver
Laser
Coupling Unit
e/o
Laser
Power
Control
Monitor
RD−
RD+
SD
o/e
Multimode Fiber
Rx Coupling Unit
o/e
Receiver
The receiver component converts the optical serial data into
PECL compatible electrical data (RD+ and RD–). The Signal
Detect (SD, active high) shows whether an optical signal is
present.
The transmitter converts PECL compatible electrical serial data
(TD+ and TD–) into optical serial data. Data lines are differen-
tially 100
Ω
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 prevent 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 laser fault to guarantee the laser Eye Safety.
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.
A low signal on TxDis enables transmitter. If TxDis is high the
transmitter is disabled.
The Infineon Gigabit Ethernet multimode transceiver is a single
unit comprised of a transmitter, a receiver, and an LC™ recepta-
cle. This design frees the customer from many alignment and
PC board layout concerns.
This transceiver supports the LC™ connectorization concept.
It is compatible with RJ-45 style backpanels for high end
Data Com and Telecom applications while providing the advan-
tages of fiber optic technology.
The module is designed for low cost SAN, LAN, WAN, Fibre
Channel 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 and 1.25 Gbit/s from a single
power supply (+3.3 V). The full differential data inputs and out-
puts are PECL and LVPECL compatible.
Fiber Optics
V23818-K305-L17/L57 SFF MM 850nm 1.0625GBd Fibre Channel, 1.25GBE 2x5 Trx (LC™)
,
,
2
TECHNICAL DATA
The electro-optical characteristics described in the following
tables are valid only for use under the recommended operating
conditions.
Recommended Operating Conditions
Parameter
Ambient Temperature
Power Supply Voltage
Transmitter
Data Input
High Voltage DC/DC
Data Input
Low Voltage DC/DC
Data Input
Differential Voltage
AC/AC
Receiver
Input Center
Wavelength
λ
C
770
860
nm
V
IH
–V
CC
–1165
V
IL
–V
CC
V
DIFF
–1810
250
–880
–1475
2400
mV
Symbol Min.
T
AMB
V
CC
–
V
EE
0
3.1
3.3
Typ. Max.
70
3.5
Units
Receiver Electro-Optical Characteristics
Receiver
Sensitivity
(Average Power)
(1)
Saturation
(Average Power)
Min. Optical Modulation
Amplitude
(6)
Stressed Receiver Sen-
sitivity 50 µm Fiber
Stressed Receiver Sen-
sitivity 62.5 µm Fiber
Signal Detect
Assert Level
(2)
Signal Detect
Deassert Level
(3)
Signal Detect
Hysteresis
Signal Detect
Assert Time
Signal Detect
Deassert Time
Receiver 3 dB cut-off
Frequency
(6)
Receiver 10 dB cut-off
Frequency
(6)
Data Output Differential
Voltage AC/AC
(4)
Output Data
Rise/Fall Time
Supply current
(5)
Notes
1. Average optical power at which the BER is 1x10
–12
. 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. AC/AC for data. Load 50
Ω
to GND or 100
Ω
differential. For dynamic
measurement a tolerance of 50 mV should be added.
5. Supply current excluding Rx output load.
6. Fibre Channel PI Standard.
7 Measured at the given Stressed Receiver Eyeclosure Penalty and
.
DCD component given in Fibre Channel PI Standard (2.03/2.18 dB &
40/80 ps).
8. Measured according to IEEE 802.3
Symbol Min.
P
IN
P
SAT
OMA
S
PIN
S
PIN
P
SDA
P
SDD
P
SDA
–
P
SDD
t
ASS
t
DAS
–30
0
Typ. Max.
–20
–17
Units
dBm
°
C
V
19
24
–17
32
–16
–24
–27
3
31
55
–13.5
67
–12.5
–18
µW
µW
(7)
dBm
(8)
µW
(7)
dBm
(8)
dBm
dB
100
350
µs
Transmitter Electro-Optical Characteristics
Transmitter
Launched Power
(Average)
(1)
Optical Modulation
Amplitude
(3)
Center Wavelength
Spectral Width (RMS)
Relative Intensity Noise
Extinction Ratio (Dynamic)
Total Tx Jitter
Reset Threshold
(2)
Reset Time
Out
(2)
Rise Time, 20%–80%
Power Supply Current
Notes
1. Into multimode fiber, 62.5 µm or 50 µm diameter.
2. Laser power is shut down if power supply is below V
TH
and
switched on if power supply is above V
TH
after t
RES
.
3. Fibre Channel PI Standard.
Symbol Min. Typ. Max. Units
P
O
OMA
λ
C
σ
l
RIN
ER
TJ
V
TH
t
RES
t
R
65
2.2
140
9
13
53
2.7
240
130
2.99
560
260
75
–9.5
156
830
–6
450
850
860
0.85
–116 dB/Hz
dB
ps
V
ms
ps
mA
–4
dBm
µW
nm
1.25 1.5
1.5
V
DIFF
0.5
12
260
75
90
0.7
3
1.23
GHz
V
dB
ps
mA
Return Loss of Receiver A
RL
t
R-RX
,
t
F-RX
I
CCRX
Fiber Optics
V23818-K305-L17/L57 SFF MM 850nm 1.0625GBd Fibre Channel, 1.25GBE 2x5 Trx (LC™)
,
,
3
Pin Description
Pin Name
V
EEr
V
CCr
SD
Receiver
Signal Ground
Receiver
Power Supply
Signal Detect
Level/ Pin# Description
Logic
N/A
N/A
TTL
1
2
3
Normal Operation: Logic
“1” Output, represents
that light is present at re-
ceiver input
Fault Condition: Logic “0”
Output
Feature
Immunity:
Against Electro-
static Discharge
(ESD) to the
Duplex LC
Receptacle
Standard
EN 61000-4-2
IEC 61000-4-2
Comments
Discharges ranging
from
±2
kV to
±15
kV
on the receptacle
cause no damage to
transceiver (under rec-
ommended condi-
tions).
With a field strength of
3 V/m rms, noise
frequency ranges from
10 MHz to 2 GHz. No
effect on transceiver
performance between
the specification limits.
Immunity:
EN 61000-4-3
Against Radio Fre- IEC 61000-4-3
quency Electro-
magnetic Field
RD–
RD+
V
CCt
V
EEt
Received Data PECL
Out Not
Received Data PECL
Out
N/A
N/A
4
5
6
7
8
Transmitter Power Supply
Transmitter Signal Ground
A low signal switches the
laser on.
A high signal switches the
laser off.
Transmitter Data In
Transmitter Data In
Emission:
FCC 47 CFR Part 15, Noise frequency range:
Electromagnetic
Class B
30 MHz to 18 GHz
Interference (EMI) EN 55022 Class B
CISPR 22
EYE SAFETY
This laser based multimode transceiver is a Class 1 product.
It complies with IEC 60825-1 and FDA 21 CFR 1040.10 and
1040.11.
To meet laser safety requirements the transceiver shall be oper-
ated within the maximum operating limits.
Caution
TxDis Transmitter
TTL
Disable/Enable Input
TD+
TD–
MS
Transmit Data
Transmit Data
Not
Mounting
Studs
PECL
PECL
N/A
9
10
MS1 Mounting Studs are provid-
MS2 ed for transceiver mechan-
ical attachment to the
circuit board. They also pro-
vide an optional connection
of the transceiver to the
equipment chassis ground.
HL1
HL2
HL3
HL4
The transceiver Housing
Leads are provided for ad-
ditional signal grounding.
The holes in the circuit
board must be included
and be tied to signal
ground.
(See Application Notes).
All adjustments have been made at the factory prior to ship-
ment of the devices. No maintenance or alteration to the
device is required.
Tampering with or modifying the performance of the device
will result in voided product warranty.
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)).
HL
Housing Leads N/A
Laser Data
Wavelength
Total output power (as defined by IEC: 7 mm
aperture at 1.4 cm distance)
Total output power (as defined by FDA: 7 mm
aperture at 20 cm distance)
Beam divergence
850 nm
<675 µW
<70 µW
12°
Pin Information
Tx
MS2
HL3
HL4
10 9 8 7 6
10-PIN MODULE - TOP VIEW
Rx
MS1
HL1
1 2 3 4 5
HL2
Required Labels
FDA
Complies with 21 CFR
1040.10 and 1040.11
IEC
Class 1 Laser Product
Regulatory Compliance
Feature
ESD:
Electrostatic
Discharge to the
Electrical Pins
Standard
Comments
EIA/JESD22-A114-A Class 1 (>1000 V)
(MIL-STD 883D
Method 3015.7)
Laser Emission
Indication of
laser aperture
and beam
10 9 8 7 6
Tx
Rx
1 2 3 4 5
Fiber Optics
V23818-K305-L17/L57 SFF MM 850nm 1.0625GBd Fibre Channel, 1.25GBE 2x5 Trx (LC™)
,
,
4
APPLICATION NOTES
Small Form Factor Pinning Comparison
The drawing below gives you a comparison between the differ-
ent pinnings 2x5, 2x6, 2x10. Dimension for diameter and dis-
tance of additional pins is similar to the existing dimensions of
the other pins.
TOP VIEW
RX
VCC PIN 1
RX VEE 2
RX VEE 3
RX CLK - 4
RX CLK + 5
RX VEE 6
RX VCC 7
SD 8
RXD - 9
RXD + 10
TX
20 P MON +
19 P MON -
18 BIAS MON +
17 BIAS MON -
16 TX VEE
15 TXD -
14 TXD +
13 TX DIS
12 TX VEE
11 TX VCC
RX VEE 1
RX VCC 2
SD 3
RXD - 4
RXD + 5
RS 1
RX VEE 2
RX VCC 3
SD 4
RXD - 5
RXD + 6
12 LASER FAULT
11 TXD -
10 TXD +
9 TX DIS
8 TX VEE
7 TX VCC
10 TXD -
9 TXD +
8 TX DIS
7 TX VEE
6 TX VCC
2 x 10
2x6
2x5
Pin Description
RS pin
The RS Rate Select: is not connected.
LF pin
The LF pin (Laser Fault) is a TTL output of the Laser Driver
Supervisor Circuit. A Logic “1” level can be measured in case
of a laser fault. It will not show a fault if the laser is being dis-
abled using the TxDis input, since this is not a fault condition.
EMI-Recommendation
To avoid electromagnetic radiation exceeding the required limits
please take note of the following recommendations.
When Gigabit switching components are found on a PCB (multi-
plexers, clock recoveries etc.) any opening of the chassis may
produce radiation also at chassis slots other than that of the
device itself. Thus every mechanical opening or aperture should
be as small as possible.
On the board itself every data connection should be an imped-
ance matched line (e.g. strip line, coplanar strip line). Data,
Datanot should be routed symmetrically, vias should be
avoided. A terminating resistor of 100
Ω
should be placed at the
end of each matched line. An alternative termination can be
provided with a 50
Ω
resistor at each (D, Dn). In DC coupled
systems a thevenin equivalent 50
Ω
resistance can be achieved
as follows: For 3.3 V: 125
Ω
to V
CC
and 82
Ω
to V
EE
, for 5 V:
82
Ω
to V
CC
and 125
Ω
to V
EE
at Data and Datanot. Please con-
sider whether there is an internal termination inside an IC or a
transceiver.
In certain cases signal GND is the most harmful source of radia-
tion. Connecting chassis GND and signal GND at the plate/
bezel/ chassis rear e.g. by means of a fiber optic transceiver
may result in a large amount of radiation. Even a capacitive cou-
pling between signal GND and chassis may be harmful if it is
too close to an opening or an aperture.
If a separation of signal GND and chassis GND is not possible,
it is strongly recommended to provide a proper contact
between signal GND and chassis GND at every location where
possible. This concept is designed to avoid hotspots. Hotspots
are places of highest radiation which could be generated if only
a few connections between signal and chassis GND exist.
Compensation currents would concentrate at these connec-
tions, causing radiation.
By use of Gigabit switching components in a design, the return
path of the RF current must also be considered. Thus a split
GND plane of Tx and Rx portion may result in severe EMI prob-
lems.
A recommendation is to connect the housing leads to signal
GND. However, in certain applications it may improve EMI per-
formance by connecting them to chassis GND.
The cutout should be sized so that all contact springs make
good contact with the face plate.
Please consider that the PCB may behave like a waveguide.
With an
ε
r
of 4, the wavelength of the harmonics inside the
PCB will be half of that in free space. In this scenario even the
smallest PCBs may have unexpected resonances.
Transceiver Pitch
Dimensions in (mm) inches
(13.97) *)
.550
*) min. pitch between SFF transceiver according to MSA.
Fiber Optics
V23818-K305-L17/L57 SFF MM 850nm 1.0625GBd Fibre Channel, 1.25GBE 2x5 Trx (LC™)
,
,
5
淘e淘
