Data Sheet 1 2000-01-01
DC/DC (5 V/3.3 V) Single Mode 155 MBd
ATM/SDH/SONET 1x9 Transceiver
with ST® Connector
V23826-C18-T63
V23826-C18-T363
V23826-C18-T63
ST® is a registered trademark of AT&T
Fiber Optics
Features
• Compliant with ATM, SONET OC-3, SDH STM-1
• Meets mezzanine standard height of 9.8 mm
• Compact integrated transceiver unit with
– MQW laser diode transmitter
– InGaAs PIN photodiode receiver
– Duplex ST® receptacle
• Class 1 FDA and IEC laser safety compliant
• FDA Accession No. 9520890-20
• Single power supply (5 V or 3.3 V)
• Signal detect indicator
• PECL differential inputs and outputs
• Process plug included
• Input Signal Monitor
• Wave solderable and washable with process plug inserted
• Industry standard multisource 1x9 footprint
• For distances of up to 15 km on single mode fiber
V23826-C18-T63
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Pin Configuration
Data Sheet 2 2000-01-01
Pin Configuration
Figure 1
Pin Description
Pin
No.
Symbol Level/Logic Function Description
1Rx
VEE Power Supply Rx Ground Negative power supply,
normally ground
2 RD PECL Output Rx Output Data Receiver output data
3 RDn Inverted receiver output data
4 SD PECL Rx Signal
Detect
A high level on this output shows
that optical data is applied to the
optical input.
5Rx
VCC Power Supply Rx 3.3 V / 5 V Positive power supply,
3.3V / 5V
6Tx
VCC Tx 3.3 V / 5 V
7 TDn PECL Input Tx Input Data Inverted transmitter input data
8 TD Transmitter input data
9Tx
VEE Power Supply Tx Ground Negative power supply,
normally ground
S1/2 Mech. Support Stud Pin Not connected
bottom
view
1
9
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Description
Data Sheet 3 2000-01-01
Description
The Infineon single mode ATM transceiver 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,
T1.646-1995, Bellcore - SONET OC-3 / IR-1 and ITU-T G. 957 STM-1 / S.1.1.
ATM was developed to facilitate solutions in multimedia applications and real time
transmission. The data rate is scalable, and the ATM protocol is the basis of the
broadband public networks being standardized in the International Telecommunications
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 comprised of a transmitter, a
receiver, and an ST receptacle. This design frees the customer from many alignment
and PC board layout concerns. The module is designed for low cost 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 wide area ATM switches.
This transceiver operates at 155.520 Mbit/s from a single power supply (+5 V or 3.3 V).
The differential data inputs and outputs are PECL compatible.
Functional Description
This transceiver is designed to transmit serial data via single mode cable.
Figure 2 Functional Diagram
Laser
Driver
Power
Control
Receiver
o/e
o/e
Laser
e/o
RX Coupling Unit
TD
TD
RD
RD
SD
Laser Coupling Unit
Single Mode Fiber
LEN
Monitor
Signal Monitor and
Automatic Shut-Down
ISM
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Description
Data Sheet 4 2000-01-01
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
present1).
The transmitter converts electrical PECL compatible serial data (TD and TDnot) into
optical serial data.
This version contains an Input Signal Monitor (ISM), that switches the optical power off
if a continuously low level is applied at Data Input.
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 output 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 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
generates an internal reset signal whenever the supply voltage drops below the reset
threshold. It keeps the reset signal active for at least 15 milliseconds after the voltage
has risen above the reset threshold. During this time the laser is inactive.
1) We recommend to switch off the transmitter supply (VCC - Tx) if no transmitter input data is applied.
Regulatory Compliance
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 61000-4-2
Discharges of ±15 kV with an air
discharge probe on the receptacle
cause no damage.
Immunity:
Radio Frequency
Electromagnetic Field
EN 61000-4-3
IEC 61000-4-3
With a field strength of 10 V/m rms,
noise frequency ranges from
10 MHz to 1 GHz. No effect on
transceiver performance between
the specification limits.
Emission:
Electromagnetic
Interference EMI
FCC Class B
EN 55022 Class B
CISPR 22
Noise frequency range:
30 MHz to 6 GHz; Margins depend
on PCB layout and chassis design
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Technical Data
Data Sheet 5 2000-01-01
Technical Data
Exceeding any one of these values may destroy the device immediately.
Absolute Maximum Ratings
Parameter Symbol Limit Values Unit
min. max.
Package Power Dissipation1)
1) For VCC – VEE (min., max.). 50% duty cycle. The supply current does not include the load drive current of the
receiver output.
1.5 W
Supply Voltage 5 V
3.3 V
VCC – VEE 7
5
V
Data Input Levels VCC + 0.5
Differential Data Input Voltage 2.5
Operating Ambient Temperature 0 70 °C
Storage Ambient Temperature –40 85
Soldering Conditions Temp/Time
(MIL-STD 883C, Method 2003)
250/5.5 °C/s
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Technical Data
Data Sheet 6 2000-01-01
The electro-optical characteristics described in the following tables are only valid for use
under the recommended operating conditions.
Recommended Operating Conditions
Parameter Symbol Limit Values Unit
min. typ. max.
Ambient Temperature TAMB 070°C
Power Supply Voltage 3.3 V
5 V
VCC – VEE 3.1
4.75
3.3
5
3.5
5.25
V
Supply Current1) 3.3 V
5 V
ICC 175
190
230
270
mA
Transmitter
Data Input High Voltage DC/DC VIH – VCC –1165 –880 mV
Data Input Low Voltage DC/DC VIL – VCC –1810 –1475
Input Data Rise/Fall Time
10%–90%
tR, tF0.4 1.3 ns
Receiver
Input Center Wavelength λC1260 1360 nm
1) For VCC – VEE (min., max.) 50% duty cycle. The supply current does not include the load drive current of the
receiver output.
Transmitter Electro-Optical Characteristics
Parameter Symbol Limit Values Unit
min. typ. max.
Launched Power (Average)1)
1) Into single mode fiber, 9 µm diameter.
PO-15.0 -11.0 -8.0 dBm
Center Wavelength λC1260 1360 nm
Spectral Width, RMS σl7.7
Relative Intensity Noise RIN –120 dB/Hz
Extinction Ratio (Dynamic) ER 8.2 dB
Reset Threshold2) 3.3 V
5 V
2) Laser power is shut down if power supply is below VTH and switched on if power supply is above VTH after tRES.
VTH 2.7
3.5
V
Reset Time Out2) tRES 15 22 35 ms
Eye Diagram3)
3) Transmitter meets ANSI T1E1.2, SONET OC-3 and ITU-T G.957 mask patterns.
ED
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Technical Data
Data Sheet 7 2000-01-01
Receiver Electro-Optical Characteristics
Parameter Symbol Limit Values Unit
min. typ. max.
Sensitivity (Average Power)1) PIN -36 -31 dBm
Saturation (Average Power) PSAT -8
Signal Detect Assert Level2) PSDA -37.5 -34
Signal Detect Deassert Level3) PSDD -44 -40
Signal Detect Hysteresis PSDA-
PSDD
12.56dB
Signal Detect Assert Time tASS 100 µs
Signal Detect Deassert Time tDAS 350
Output Low Voltage4) VOL - VCC -1950 -1620 mV
Output High Voltage4) VOH - VCC -1025 -720
Output Data, Rise/Fall Time,
20%–80%
tR, tF375 ps
Output SD, Rise/Fall Time 40 ns
1) Minimum average optical power at which the BER is less than 1x10-10 or lower. Measured with a 223 - 1 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, PECL for Signal Detect, PECL compatible. Load is 50 Ω into VCC – 2 V for data, 500 Ω to VEE for Signal
Detect. Measured under DC conditions. For dynamic measurements a tolerance of 50 mV should be added.
VCC = 3.3 V / 5 V. TAMB = 25°C.
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Eye Safety
Data Sheet 8 2000-01-01
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 operated within the Absolute
Maximum Ratings.
Attention: All adjustments have been made at the factory prior to shipment 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 modification 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)).
Figure 3 Required Labels
Figure 4 Laser Emission
Laser Data
Wavelength 1300 nm
Total output power
(as defined by IEC: 50 mm aperture at 10 cm distance)
less than 2 mW
Total output power
(as defined by FDA: 7 mm aperture at 20 cm distance)
less than 180 µW
Beam divergence 4°
Class 1 Laser Product
IEC
Complies with 21 CFR
1040.10 and 1040.11
FDA
Indication of laser
aperture and beam
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Application Notes
Data Sheet 9 2000-01-01
Application Notes
ATM transceivers and matching circuits are high frequency components and shall be
terminated as recommended in the application notes for proper EMI performance.
Electromagnetic emission may be caused by these components.
Single Mode 155 MBd ATM 1x9 Transceiver
Figure 5
C1/2/3 = 4.7 µF
C4/5/6/7 = 100 nF
L1/2 = 1 µH
R10/11 = 82 Ω (5 V)
= 127 Ω (3.3 V)
(depends on SerDes chip used)
R7/8 = 127 Ω (5 V)
= 82 Ω (3.3 V)
(depends on SerDes chip used)
R5/6 = 270 Ω (5 V)
= 150 Ω (3.3 V)
R9 = 510 Ω (5 V)
= 270 Ω (3.3 V)
Place R1/2/3/4 close to SerDes chip,
depends on SerDes chip used,
see application note of SerDes supplier.
Place R7/8/10/11 close to Infineon Transceiver
C7
C6
Laser
Driver
Signal
Detect
Limiting
Amplifier
Pre-
Amp RD
-
RD+
TX+
TX
-
Serializer/
Deserializer
RD
-
ECL/PECL
Driver
Receiver
PLL etc.
Infineon Transceiver
V23826-C18-C63/363
DC/DC Option
1
2
3
4
5
6
7
8
9
SD to upper level
TxV
EE
TxD
TxD
V
CC
Tx
V
CC
Rx
SD
RxD
RxD
RxV
EE
V
CC
R8
L1
L2
C2
C1
R9
R5
R6
R3
R4
R1
R2
C3
C4
C5
V
CC
SerDes
5 V / 3.3 V
V
CC
5 V / 3.3 V
RD+
R10
R7 R11
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Application Notes
Data Sheet 10 2000-01-01
This Application Note assumes Fiber Optic Transceivers using 5 V power supply and
SerDes Chips using 3.3 V power supply. It also assumes no self biasing at the receiver
data inputs (RD+/RD-) of the SerDes chip (Refer to the manufacturer data sheet for other
applications). 3.3 V-Transceivers can be directly connected to SerDes-Chips using
standard PECL Termination network.
Value of R1...R4 may vary as long as proper 50 Ω termination to VEE or 100 Ω differential
is provided. The power supply filtering is required for good EMI performance. Use short
tracks from the inductor L1/L2 to the module VCCRx/VCCTx. Further application notes for
electrical interfacing are available upon request. Ask for Appnote 82.
We strongly recommend a VEE plane under the module for getting good EMI
performance.
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).
Application Board available on request.
V23826-C18-T63
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Package Outlines
Data Sheet 11 2000-01-01
Package Outlines
Figure 6
Dimensions in (mm) inches
(0.46) .02 x 9
(14.4) .567
(9.8) max.
.39 max.
(41.2) 1.622
(3.8) .15 max.
(2.8)
max.
.11
max.
(18.47) .727 (20.32) .8
(5.27) .207
(1) .039
(0.6)
.024
(3–0.2)
.118–.008
A
∅(1.4)
∅.055
2x ∅(0.1) MA M
bottom
view
∅(0.3) MA M
(1.4)
(25.4) max.
1 max.
(20.32)
8
(2.54)
.1
(12.7)
.5
1
9
Edition 2000-01-01
Published by Infineon Technologies AG,
St.-Martin-Strasse 53,
81669 München, Germany
© 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 your nearest
Infineon Technologies Office in Germany or our Infineon Technologies Representatives worldwide.
Warnings
Due to technical requirements components may contain dangerous substances. For information on the types in
question please contact your nearest Infineon Technologies Office.
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.
For questions on technology, delivery and prices please contact the Infineon
Technologies Offices in Germany or the Infineon Technologies Companies and
Representatives worldwide: see our webpage at http://www.infineon.com.
V23826-C18-T63
V23826-C18-T363
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