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V23806-A84-C2
SM 155 Mbd FDDI Transceiver
V23806-A34-C2
Single Mode FDDI 1x9 Transceiver with SC Receptacle
FEATURESCompliant with existing FDDI standardCompact integrated transceiver unit withMQW laser diode transmitterInGaAs PIN photodiode receiverDuplex SC receptacle Class 1 FDA and IEC laser safety compliantFDA Accession No. 9520890-21Single power supply (5 V)Signal detect indicatorPECL differential inputs and outputsProcess plug includedWave solderable and washable with process
pluginsertedIndustry standard multisource 1x9 footprint
Absolute Maximum RatingsExceeding any one of these values may destroy the device
immediately.
Package Power Dissipation(1)................................................1 W
Supply Voltage (VCC–VEE)......................................................6 V
Data Input Levels........................................................VCC+0.5 V
Differential Data Input Voltage............................................2.5 V
Operating Ambient Temperature.............................0°C to 70°C
Storage Ambient Temperature............................–40°C to 85°C
Soldering Conditions, Temp/Time
(MIL-STD 883C, Method 2003).............................250°C/5.5s
NoteFor VCC–VEE (min., max.). 50% duty cycle. The supply current does
not include the load drive current of the receiver output. Add max.
45 mA for thethree outputs. Load is 50 Ω to VCC–2 V.
DESCRIPTIONThis data sheet describes the Infineon Single Mode SC FDDI
transceiver, which complies with the current Fiber Distributed
Data Interface (FDDI) Single Mode Fiber Physical Layer Medium
Dependent (SMF-PMD ANSI standard).
The Infineon single mode SC FDDI transceiver is a single unit
comprised of a transmitter, a receiver, and an SC 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 intermediate devices such as
bridges, routers, intelligent hubs, and concentrators.
This transceiver operates at 125 MBit/s from a single power
supply (+5 Volt). The full differential data inputs and outputs are
PECL compatible.
Functional DescriptionThis transceiver is designed to transmit serial data via single
mode 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 optical data is
present(1).
The transmitter converts electrical PECL compatible serial data
(TDand TDnot) into optical serial data. It 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 output power of the laser over temperature
and aging.
The power control uses the output of the monitor PINdiode
(mechanically built in the laser coupling unit) as a controlling sig-
nal, to prevent the laser power from exceeding the operating
limits.
This module is a Class 1 laser product, due to an integrated
automatic shutdown circuit that disables the laser when it
detects transmitter failures.
The transceiver contains a supervisory circuit to monitor the
power supply. This circuit makes an internal reset signal
whenever 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.
NoteWe recommend to switch off the transmitter supply (VCC-Tx) if no
transmitter input data is applied.
TECHNICAL DATAThe electro-optical characteristics described in the following
tables are valid only for use under the recommended operating
conditions.
Recommended Operating ConditionsNote
1. For VCC–VEE (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 Ω to VCC–2 V.
ransmitter Electro-Optical CharacteristicsNotes.Measured at the end of 5 meters of single mode fiber. The FDDI
Halt Line state (12.5 MHz square wave) is used. Specified values are
valid for EOL and over the whole temperature range.The weighted average wavelength of the optical spectrum output.FOTP-127 is used to measure central wavelength and RMS
spectralwidth.The weighted root mean square (RMS) width of the optical
outputspectrum.To 90% (90% to 10%) levels. Measured using the Halt Line state
(12.5 MHz square wave).Measurement done using the Idle Line state (62.5 MHz square
wave)..Test method as in PMD Appendix A. All jitter values are peak-to-peak.Measurement done using the Worst Case test pattern described in
the PMD Appendix A.5.Measurement done using the Idle Line state (62.5 MHz square
wave). BER=2.5–10.
Receiver Electro-Optical CharacteristicsNotesMinimum average power at which the BER is less than 2.5–10
or lower. Measured with the ANSI Worst Case pattern from
Appendix 5 of the PMD.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.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.PECL compatible. Load is 50 Ω into VCC–2 V. Measured under DC
conditions. For dynamic measurements a tolerance of 50 mV should
be added. VCC=5 V.PECL compatible. A high level on this output shows that optical data
is applied to the optical input.Measurement done using the Idle Line state (62.5 MHz
squarewave)..Test method as in PMD Appendix A. All jitter values are peak-
to-peak.Measurement done using the Worst Case test pattern described in
the PMD Appendix A.5.Measurement done using the Idle Line state (62.5 MHz square
wave). BER=2.5–10.
Pin Description
Regulatory Compliance
EYE SAFETYThis laser based single mode transceiver is a Class 1 product. It
complies with IEC 60825-1 and FDA 21 CFR 1040.10 and
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
Published by Infineon Technologies AG
© Infineon Technologies AG 1999
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.
InformationFor 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
WarningsDue 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.
APPLICATION NOTE
Single Mode 1x9 Transceiver* Recommended choke is Siemens Matsushita B78108-S1153-K or B78148-S1153-K (Qmin=60, max. DC resistance=0.6 Ω).
The power supply filtering is recommended for good EMI per-
formance. Use short tracks from the inductor L1/L2 to the mod-
ule VCC–RX/VCC–TX. We recommend a VEE plane under the
module for getting good EMI and sensitivity performance.
Studs should be connected to this VEE plane. The transceiver
contains an automatic shutdown circuit.
Reset is only possible if the power is turned off, and then on
again. VCCTX switched below VTH. Further application notes for
electrical interfacing are available upon request. Ask for App-
note 82.
Application board available on request.
:
www.ic-phoenix.com
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