V23818-C18-Lx Datasheet by Infineon Technologies

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LC™ is a trademark of Lucent
Fiber Optics JANUARY 2002
V23818-C18-Lx(*)
Small Form Factor Single Mode 1300 nm 155 MBd
ATM/SDH/SONET Transceiver 2x5 Pinning with LC™ Connector
Preliminary
a) recommended bezel position
shown design with collar
Dimensions in mm [inches]
*) Ordering Information
In-
put Out-
put Signal
detect Temperature Data Outputs
if SD is Low Range Collar Part Number
V23818-C18-
DC DC PECL 0°C...70°C Switched to
Low IR yes -L37
AC AC TTL 0°C...70°C IR yes -L47
DC DC PECL –40°C...85°C IR yes -L36
AC AC TTL –40°C...85°C IR yes -L46
DC DC PECL 0°C...70°C LR yes -L737
AC AC TTL 0°C...70°C LR yes -L747
DC DC PECL 0°C...70°C IR no -L35
AC AC TTL 0°C...70°C IR no -L45
DC DC PECL –40°C...85°C IR no -L39
AC AC TTL –40°C...85°C IR no -L49
DC DC PECL 0°C...70°C LR no -L735
AC AC TTL 0°C...70°C LR no -L745
DC DC PECL –40°C...85°C LR yes -L736
AC AC PECL –40°C...85°C IR no -L79
DC DC PECL –40°C...85°C Noisy IR yes -L436
Fiber Optics V23818-C18–Lx, SFF, SM 1300nm 155 MBd ATM/SDH/SONET Trx 2x5 (LC™)
2
FEATURES
Small Form Factor transceiver
RJ-45 style LC
connector system
Half the size of SC Duplex 1x9 transceiver
Single power supply (+3.3 V)
Extremely low power consumption
Loss of optical signal indicator
Laser disable input
PECL differential inputs and outputs
Distance up to 15 km / 40 km on Single Mode Fiber
Class 1 FDA and IEC laser safety compliant
Multisource footprint
Small footprint for high channel density
UL 94 V-0 certified
Compliant with FCC (Class B) and EN 55022
Absolute Maximum Ratings
Exceeding any one of these values may destroy the device
immediately.
Package Power Dissipation
V23818-C18-L37/47/737/747/35/45/735/745/736........... 1.5 W
V23818-C18-L36/46/39/49/436/L79................................0.9 W
Supply Voltage (VCC-VEE).......................................................4 V
Data Input Levels........................................ VCC+0.5 to VCC–0.5
Differential Data Input Voltage............................................ 2.5 V
Operating Case Temperature
V23818-C18-L37/47/737/747/35/45/735/745.........0°C to 70°C
V23818-C18-L36/46/39/49/436/736/79..............–40°C to 85°C
Storage Ambient Temperature..............................–40°C to 85°C
Soldering Conditions Temp/Time.............................250°C/ 5.5 s
DESCRIPTION
This data sheet describes the Infineon single mode ATM
transceiver, which complies with the ATM Forum's Network
Compatible ATM for Local Network Applications document and
ANSI's Broadband ISDN—Customer Installation Interfaces,
Physical Media Dependent Specification, T1E1.2, Bellcore -
SONET OC-3/IR-1 and ITU-T G.957 STM1/S1.1.
ATM was developed to facilitate solutions in multimedia appli-
cations and real time transmission. The data rate is scalable,
and the ATM protocol is the basis of the broadband public net-
works being standardized in the International Telecommunica-
tions Union (ITU), the former International Telegraph and
Telephone Consultative Committee (CCITT). ATM can also be
used in local private applications.
The Infineon single mode ATM transceiver is a single unit com-
prised of a transmitter, a receiver, and an LC receptacle. This
design frees the customer from many alignment and PC board
layout concerns. The module is designed for low cost LAN and
WAN applications. It can be used as the network end device
interface in workstations, servers, and storage devices, and in a
broad range of network devices such as bridges, routers, and
intelligent hubs, as well as local and wide area ATM switches.
This transceiver operates at 155.520 Mbit/s from a single power
supply (+3.3 V). The full differential data inputs and outputs are
PECL compatible.
Functional Description of SFF 2x5 Pin Row Transceiver
This transceiver is designed to transmit serial data via single
mode fiber.
Functional Diagram
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.
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 (VCCTx) drops below the reset thresh-
old (VTH). It keeps the reset signal active for at least 140
milliseconds after the voltage has risen above the reset thresh-
old. During this time the laser is inactive.
A low signal on TxDis enables transmitter. If TxDis is high or not
connected the transmitter is disabled.
Laser
Driver Laser
Power
Control
Receiver
SD
TxD
RxD
RxDn
TxDn
Laser
Coupling Unit
Rx
Coupling Unit
e/o
o/e
o/e
TxDis
Single
Mode
Fiber
Automatic
Shut-Down
Fiber Optics V23818-C18Lx, SFF, SM 1300nm 155 MBd ATM/SDH/SONET Trx 2x5 (LC)
3
TECHNICAL DATA
The electro-optical characteristics described in the following
tables are valid only for use under the recommended operating
conditions.
Recommended Operating Conditions
Note
1. For VCCVEE (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 VCC2 V.
Transmitter Electro-Optical Characteristics
V23818-C18-L36/L46/L37/L47/L35/L45/L39/L49/L436/L79
Transmitter Electro-Optical Characteristics
V23818-C18-L737/L747/L735/L745/L736
Notes
1. Into single mode fiber, 9 µm diameter
2. Laser power is shut down if power supply is below VTH and
switched on if power supply is above VTH after tRES.
3. Transmitter meets ANSI T1E1.2, SONET OC-3, and ITU-T G.957
mask patterns.
Receiver Electro-Optical Characteristics
V23818-C18-L37/L47/L35/L45
Notes
1. Minimum average optical power at which the BER is less than
1x10E10. Measured with a 2231 NRZ PRBS as recommended by
ANSI T1E1.2, SONET OC-3, and ITU-T G.957.
2. An increase in optical power above the specified level will cause the
SIGNAL DETECT 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 switch from a High state to a Low state.
4. Measured by switching the light from <40 dBm to 25 dBm.
Parameter Symbol Min. Typ. Max. Units
Ambient
Tempera-
ture
-L37/L47/
L737/L747/
L35/L45/
L735/L745
TAMB 070°C
-L36/L46/
L39/L49/
L436/L736/
L79
40 85
Power Supply Voltage VCCVEE 3.15 3.3 3.45 V
Supply
Current(1) -L37/L47/
L737/L747/
L35/L45/
L735/L745
ICC 230 mA
-L36/L46/
L39/L49/
L436/L736/
L79
250
Transmitter
Data Input High Voltage VIHVCC 1165 880 mV
Data Input Low Voltage VILVCC 1810 1475
Input Data Rise/Fall,
10%90% tR, tF0.4 1.3 ns
Receiver
Output Current IO25 mA
Input Center
Wavelength λC1260 1360 nm
Transmitter Symbol Min. Typ. Max. Units
Output Power (Average) PO15.0 8.0 dBm
Center Wavelength λC1260 1360 nm
Spectral Width (FWHM) Dl7.7
Output Rise Time tR0.6 2.5 ns
Output Fall Time tF3.0
Extinction Ratio
(Dynamic) ER 8.2 dB
Reset Threshold for
TxVCC(2) VTH 2.7 V
Power on Delay(2) tRES 30 ms
Eye Diagram(3) ED ITU-T G.957 mask pattern
Jitter Generation JGEp-p UI
JGERMS
Transmitter Symbol Min. Typ. Max. Units
Output Power
(Average)(1) PO50dBm
Center Wavelength λC1280 1335 nm
Spectral Width (FWHM) Dl2.4 3
Extinction Ratio
(Dynamic) ER 10 dB
Reset Threshold for
TxVCC(2) VTH 2.7 V
Power on Delay(2) tRES 30 ms
Eye Diagram(3) ED ITU-T G.957 mask pattern
Jitter Generation JGEp-p UI
JGERMS
Receiver Symbol Min. Typ. Max. Units
Sensitivity
(Average Power)(1) PIN 29.0 dBm
Saturation
(Average Power) PSAT 8.0
Signal Detect
Assert Level(2) PSDA 31
Signal Detect
Deassert Level(3) PSDD 45
Signal Detect
Hysteresis PSDA
PSDD 3.0 dB
Signal Detect
Assert Time(4) tASS 10 100 ns
Signal Detect
Deassert Time(5) tDAS 30 350
Output Low Voltage(6) VOL
VCC 1800 1300 mV
Output High Voltage(6) VOH
VCC 1110 650
Output Data Rise/Fall
Time, 10%90% tR, tF1ns
Output SD Rise/Fall
Time(7) 40 ns
Fiber Optics V23818-C18Lx, SFF, SM 1300nm 155 MBd ATM/SDH/SONET Trx 2x5 (LC)
4
5. Measured by switching the light from 25 dBm to <40 dBm.
Switching from higher power levels increases this time.
6. PECL compatible. Load is 50 into VCC2 V. Measured under DC
conditions at 25°C. For dynamic measurements a tolerance of
50 mV should be added. VCC=3.3 V.
7. PECL compatible. A high level on this output shows that an optical
signal is applied to the optical input.
Receiver Electro-Optical Characteristics
V23818-C18-L36/L46/L39/L49/L436L79
Notes
1. Minimum average optical power at which the BER is less than
1x1010 or lower. Measured with a 2231 NRZ PRBS as recom-
mended by ANSI T1E1.2, SONET OC-3 and ITU-T G.957.
2. An increase in optical power of data signal above the specified level
will cause the SIGNAL DETECT to switch from a Low state to a High
state.
3. A decrease in optical power of data signal below the specified level
will cause the SIGNAL DETECT to switch from a High state to a Low
state.
4. DC/DC, PECL for Signal Detect
PECL compatible. Load is 50 into VCC 2 V for data, 500= to VEE
for Signal Detect. Measured under DC conditions. For dynamic mea-
surements a tolerance of 50 mV should be added. VCC=3.3 V.
TAMB=25°C.
5. PECL compatible. A high level on this output shows that an optical
signal is applied to the optical input.
Receiver Electro-Optical Characteristics
V23818-C18-L737/L747/L735/L745/L736
Notes
1. Minimum average optical power at which the BER is less than
1x1010. Measured with a 2231 NRZ PRBS as recommended by
ANSI T1E1.2, SONET OC-3, and ITU-T G.957.
2. An increase in optical power of data signal above the specified level
will cause the SIGNAL DETECT to switch from a Low state to a High
state.
3. A decrease in optical power of data signal below the specified level
will cause the SIGNAL DETECT to switch from a High state to a Low
state.
4. DC/DC for data, DC/DC PECL for Signal Detect, PECL compatible.
Load is 50 into VCC 2 V for data, 500= to VEE for Signal Detect.
Measured under DC conditions. For dynamic measurements a toler-
ance of 50 mV should be added. VCC=3.3 V/5 V. TAMB=25°C.
5. PECL compatible. A high level on this output shows that an optical
signal is applied to the optical input.
Receiver Symbol Min. Typ. Max. Units
Sensitivity
(Average Power)(1) PIN 29 dBm
Saturation
(Average Power) PSAT 8
Signal Detect
Assert Level(2) PSDA 31
Signal Detect
Deassert Level(3) PSDD 45
Signal Detect
Hysteresis PSDA
PSDD 3dB
Signal Detect Assert
Time tASS 100 µs
Signal Detect Deassert
Time tDAS 350
Output Low Voltage(4) VOLVCC 1800 1300 mV
Output High Voltage(4) VOHVCC 1110 650
Output Data Rise/Fall
Time, 20%80% tR, tF1ns
Output SD
Rise/Fall Time(5) 40 ns
Receiver Symbol Min. Typ. Max. Units
Sensitivity
(Average Power)(1) PIN 34 dBm
Saturation
(Average Power) PSAT 2
Signal Detect
Assert Level(2) PSDA 34
Signal Detect
Deassert Level(3) PSDD 45
Signal Detect
Hysteresis PSDA
PSDD 3dB
Signal Detect Assert
Time tASS 100 µs
Signal Detect Deassert
Time tDAS 350
Output Low Voltage(4) VOLVCC 1800 1300 mV
Output High Voltage(4) VOHVCC 1110 650
Output Data, Rise/Fall
Time, 20%80% tR, tF1ns
Output SD
Rise/Fall Time(5) 40 ns
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Fiber Optics V23818-C18Lx, SFF, SM 1300nm 155 MBd ATM/SDH/SONET Trx 2x5 (LC)
5
Pin Description
Pin Information
Regulatory Compliance
EYE SAFETY
This laser based single mode 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 Absolute Maximum Ratings.
Caution
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)).
Laser Data
Required Labels
Laser Emission
Pin Name Level Pin# Description
RxVEE Rx Ground Power
Supply 1 Negative power supply,
normally ground.
RxVCC Rx +3.3 V Power
Supply 2 Positive power supply,
+3.3 V.
SD Rx Signal
Detect PECL
Output
active
high
3 A high level on this output
shows that optical data is
applied to the optical in-
put.
RxDn Rx Output
Data PECL
Output 4 Inverted receiver output
data.
RxD 5 Receiver output data
TxVCC Tx +3.3 V Power
Supply 6 Positive power supply,
+3.3 V.
TxVEE Tx Ground Power
Supply 7 Negative power supply,
normally ground.
TxDis Tx Disable/
Enable TTL
Input 8 A low signal switches the
laser on.
A high signal switches the
laser off.
TxD Tx Input
Data PECL
Input 9 Transmitter input data
TxDn 10 Inverted transmitter input
data.
MS Mounting
Studs N/A MS1
MS2 Mounting Studs are pro-
vided for transceiver me-
chanical attachment to the
circuit board. They also
provide an optional con-
nection of the transceiver
to the equipment chassis
ground.
HL Housing
Leads N/A 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).
Feature Standard Comments
ESD:
Electrostatic
Discharge to the
Electrical Pins
EIA/JESD22-A114-A
(MIL-STD 883D
Method 3015.7)
Class 1 (>1000 V)
Immunity:
Against Electro-
static Discharge
(ESD) to the
Duplex LC
Receptacle
EN 61000-4-2
IEC 61000-4-2 Discharges ranging
from ±2 kV to ±15 kV on
the receptacle cause no
damage to transceiver
(under recommended
conditions).
Tx
Rx
HL4
HL1 HL2
HL3
12345
10 9 8 7 6
10-PIN MODULE - TOP VIEW
MS2
MS1
Feature Standard Comments
Immunity:
Against Radio Fre-
quency Electro-
magnetic Field
EN 61000-4-3
IEC 61000-4-3 With a field strength of
3V/m rms, noise
frequency ranges from
10 MHz to 2 GHz. No
effect on transceiver
performance between
the specification limits.
Emission:
Electromagnetic
Interference (EMI)
FCC 47 CFR Part 15,
Class B
EN 55022 Class B
CISPR 22
Noise frequency range:
30 MHz to 18 GHz
Wavelength 1300 nm
Total output power (as defined by IEC: 7 mm
aperture at 14 mm distance) 2 mW
Total output power (as defined by FDA: 7 mm
aperture at 20 cm distance) 180 µW
Beam divergence 4°
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 Top view
Fiber Optics V23818-C18Lx, SFF, SM 1300nm 155 MBd ATM/SDH/SONET Trx 2x5 (LC)
6
APPLICATION NOTES
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 should be placed at the
end of each matched line. An alternative termination can be
provided with a 50 resistor at each (D, Dn). In DC coupled
systems a thevenin equivalent 50 resistance can be achieved
as follows: For 3.3 V: 125 to VCC and 82 to VEE, for 5 V:
82 to VCC and 125 to VEE 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 εr 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
(13.97)
.550 *)
*) min. pitch between SFF transceiver according to MSA.
Dimensions in (mm) inches
Fiber Optics V23818-C18Lx, SFF, SM 1300nm 155 MBd ATM/SDH/SONET Trx 2x5 (LC)
7
Single Mode 155 MBd 2x5 Transceiver DC/DC
C6
C7
8Tx Disable
Laser
Driver
Signal
Detect
Limiting
Amplifier
Pre-
Amp SerDat In
SerDat In +
SerDat Out
SerDat Out
Serializer/
Deserializer
RD
ECL/
PECL
Driver
Receiver
PLL etc.
SFF Transceiver
V23818-C18-L35/L36/L37/L39/
L735/L737/L436/L736
5
4
3
2
6
10
9
1
7
SD
TxVEE
TD+
TD
TxVCC
RxVCC
SD
RD
RD+
RxVEE
VCC
R4
R5
L1
L2
C2
C1
R2
R3
R1
C3
C4
C5
VCC SerDes
VCC
3.3 V
RD+
R7
R9
R6
R8
VCC
3.3 V
TxDis
+
L1/2 = 1 ... 4.7 µH
C1/2/3 = 4.7 ... 10 µF
C4/5/6/7 = 100 nF
R1 = 100 (if no biasing necessary for
Deserializer and not termination inside)
R2/3 = 150
R4/5 = biasing for outputs depending on Serializer
R6/7 = 127
R8/9 = 82
Published by Infineon Technologies AG
© Infineon Technologies AG 2002
All Rights Reserved
Attention please!
The information herein is given to describe certain components and shall not be
considered as warranted characteristics.
Terms of delivery and rights to technical change reserved.
We hereby disclaim any and all warranties, including but not limited to warranties
of non-infringement, regarding circuits, descriptions and charts stated herein.
Infineon Technologies is an approved CECC manufacturer.
Information
For further information on technology, delivery terms and conditions and prices
please contact the Infineon Technologies offices or our Infineon Technologies
Representatives worldwide - see our webpage at
www.infineon.com/fiberoptics
Warnings
Due to technical requirements components may contain dangerous substances.
For information on the types in question please contact your Infineon Technologies
offices.
Infineon Technologies Components may only be used in life-support devices or
systems with the express written approval of Infineon Technologies, if a failure of
such components can reasonably be expected to cause the failure of that
life-support device or system, or to affect the safety or effectiveness of that device
or system. Life support devices or systems are intended to be implanted in the
human body, or to support and/or maintain and sustain and/or protect human life.
If they fail, it is reasonable to assume that the health of the user or other persons
may be endangered.
Infineon Technologies AG Fiber Optics Wernerwerkdamm 16 Berlin D-13623, Germany
Infineon Technologies, Inc. Fiber Optics 1730 North First Street San Jose, CA 95112, USA
Infineon Technologies K.K. Fiber Optics Takanawa Park Tower 20-14, Higashi-Gotanda, 3-chome, Shinagawa-ku Tokyo 141, Japan
Single Mode 155 MBd 2x5 Transceiver AC/AC
Values of R1/2/3/4 may vary as long as proper 50 termination
to VEE or 100 differential is provided. The power supply filter- ing is required for good EMI performance. Use short tracks
from the inductor L1/L2 to the module VCCRx/VCCTx.
8Tx Disable
Laser
Driver
Signal
Detect
Limiting
Amplifier
Pre-
Amp SerDat In
SerDat In +
SerDat Out
SerDat Out
Serializer/
Deserializer
RD
ECL/
PECL
Driver
Receiver
PLL etc.
SFF Transceiver
V23818-C18-L45/L46/L47/L49/
L745/L747/L79
5
4
3
2
6
10
9
1
7
SD
TxV
EE
TD+
TD
TxV
CC
RxV
CC
SD
RD
RD+
RxV
EE
V
CC
R7
R8
L1
L2
C2
C1
C3
V
CC
SerDes
V
CC
3.3 V
RD+
TxDis
+
R3
R4
R1
R2
100
L1/2 = 1 ... 4.7 µH
C1/2/3 = 4.7 ... 10 µF
R1/2 = Depends on SerDes chip used
R3/4 = Depends on SerDes chip used
R7/8 = Biasing (depends on SerDes chip)
Place R1/2/3/4/7/8 close to SerDes chip

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