Introduction different applications high speed optical transmitters (T

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Introduction different applications high speed optical transmitters (T

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Electrical Interfaces Optical Transceivers Appnote
Introduction different applications high speed optical transmitters (TRx) related circuitries (such Serializer-Deserializer (SERDES)) lead variety interface circuits questions. This reason develop this brochure show development engineer best solution application. Explanation Circuit Headline
Interface (DC)
Main interfaces this kind circuits PECL, there also upcoming technology CMOS interface named LVDS. find possible interfaces this brochure mainly developed Gbit-EthernetTransceiver, also suitable other modules with similar interfaces except 2x5, 2x6, 2x10 Transceivers.
SERDES LVPECL
Remarks
Remarks, circuit variations Interface SERDES(1) Supply SERDES(1) Type TRx-Interface (Tx,Rx,DC,AC) Supply voltage General Type interface Number circuit table page
Note noted, Deserializer input biasing.
Fiber Optics
JUNE 2001
Abbreviations SERDES Positive supply voltage +3.3 Negative supply voltage (optical) Transmitter (optical) Receiver (optical) Transceiver Serializer Deserializer Transceiver (Combination Serializer Deserializer)
Emitter Coupled Logic (negative Supply Voltage) high level -770 -1025 level -1625 -1950 Positive shifted Emitter Coupled Logic, same ECL, shifted Voltage Positive shifted ECL, same ECL, shifted +3.3 Transistor Transistor Logic (only used Signal Detect) Direct Current, zero frequency allows transmission unlimited length zeros ones. Alternating Current, frequency range 1000 kHz; limited length zeros ones.
PECL LVPECL
Overview possible Transceiver-SERDES Interface Connections
Transceiver-Versions(1) -C13 SERDES-Interface LVPECL LVPECL LVPECL LVPECL PECL PECL PECL PECL LVDS LVDS
Notes Product Number GBd-Ethernet GBd-Fiber Channel 1300 well Sonet Transceivers (V23826K15/K305/H18-C***). Numbers table refer number interface type circuits below. Some SERDES have bias circuits input deserializer. This means marking "y"(yes). means bias. Biasing simplifies ACcoupling (see data sheet application note SERDES used). AC/DC means coupling technique TRx-SERDES-Interface, independent Transceiver version. AC-interface also built with DC-Transceivers, vice versa). Advantage DC-Coupling frequency therefore limitation coding signal. Furthermore some Transmitters have Input Signal Monitor (ISM), which shuts down optical power logic level input. related TTL-signal detect, PECL-signal detect. This does affect data interface.
-C53 -C63 -C73 -C313 -C353 -C363 -C373 AC-AC(P)(4) AC-AC(T)(4) DC-DC AC-AC(P)(4) AC-DC AC-AC(T)(4) DC-DC
AC-DC
LVPECL Bias(2) AC-DC(3)
Fiber Optics
Electrical Interfaces Optical Transceivers, Appnote
Interface Circuits (LV)PECL
Interface Tx(DC)
(LV)PECL
SERDES 3.3V LVPECL R1** 100*
Interface (19)
3,3V Tx(AC) Tx(AC) Tx(AC) 3,3V 3,3V
SERDES LVPECL LVPECL LVPECL
Stripline Tx(DC)
Stripline
Stripline Tx(AC) Stripline
Short
striplines (<3cm):no line termination (100 resistor) needed SER-output
depends SER-output
depends
Interface
SERDES
Rx(DC) 3.3V LVPECL
Long Striplines R1=100 R2=100
Short Striplines R2=150
Interface (10) (20)
3.3V
Rx(DC) Rx(DC) Rx(DC)
SERDES 3.3V LVPECL 3.3V LVPECL LVPECL
Rx(DC) Stripline
100n
Rx(DC)
Stripline
Long Track Interface SERDES (17) Rx(DC) LVPECL Tx(DC) LVPECL (18) 3.3V Rx(DC) 3.3V LVPECL 3.3V Tx(DC) 3.3V LVPECL
Short Track
Interface (11) (21)
3.3V Rx(AC) Rx(AC) Rx(AC)
SERDES 3.3V LVPECL 3.3V LVPECL LVPECL
Stripline
Stripline
Optional
100n Stripline w.Bias
Rx(AC)
Stripline
w.Bias
Stripline
SER(4,18) Rx(DC)(3,17)
Tx(DC)(4,18) DES(3,17)
Stripline
Fiber Optics
Electrical Interfaces Optical Transceivers, Appnote
Interface (12) (22)
3.3V Tx(DC) Tx(DC) Tx(DC)
SERDES 3.3V LVPECL 3.3V LVPECL LVPECL
Interface circuits (LV)PECL
Interface (25) (29)
SERDES Tx(AC) Tx(AC)
3.3V
100n Tx(DC)
Stripline Stripline
100n
Stripline Tx(AC) Stripline
depends SER-output
Interface (13) (15) (23)
3.3V
Rx(DC) Rx(DC) Rx(DC)
SERDES 3.3V LVPECL 3.3V LVPECL LVPECL
Interface (26) (30)
3.3V Rx(DC) Rx(DC)
SERDES
100n
Rx(DC)
100n Stripline
Rx(DC) Stripline
100n
Interface (14) (16) (24)
3.3V
Rx(AC) Rx(AC) Rx(AC)
SERDES 3.3V LVPECL 3.3V LVPECL LVPECL
Interface (27) (31)
3.3V Rx(AC) Rx(AC)
Stripline
100n
Stripline w.Bias
SERDES
Stripline
Stripline RX(AC)
Rx(AC) Stripline
w.Bias
Stripline
Fiber Optics
Electrical Interfaces Optical Transceivers, Appnote
Interface (28) (32)
3.3V Tx(DC) Tx(DC)
SERDES
Interface circuits (LV)PECL
Interface (37) 3.3V
LVDS
Tx(DC) SERDES 3.3V LVDS
100n
Stripline
Tx(DC)
100n
Stripline
Stripline
Tx(DC)
Stripline
Interface (33) (35)
3.3V Rx(DC) Rx(DC)
SERDES
Diodes suitable high frequency,use add.capacitors (10nF)
Stripline Rx(DC) Stripline
100n
Interface (38)
Rx(DC)
SERDES 3.3V LVDS
100n
*internal internal R1=177 R1=121
Stripline Rx(DC)
Interface (34) (36)
3.3V Rx(AC) Rx(AC)
SERDES
Stripline
Stripline Rx(AC) Stripline
Interface (39) (43)
3.3V Tx(DC) Tx(DC)
SERDES 3.3V LVDS 3.3V LVDS
Stripline Tx(AC) Stripline
Fiber Optics
Electrical Interfaces Optical Transceivers, Appnote
100*
Interface (40) (44)
3.3V Rx(DC) Rx(DC)
SERDES 3.3V LVDS 3.3V LVDS
Interface (41) (45)
3.3V Rx(AC) Rx(AC)
SERDES 3.3V LVDS 3.3V LVDS
Stripline Rx(DC) Stripline
100n
Stripline
Stripline
1,2k
1,2k
*)no internal termination
100n
100n
DES*
*)no internal termination
internal Bias Termination, resistors DES-side removed (excl. R1).
Interface (42) (46)
3.3V Tx(AC) Tx(AC)
SERDES 3.3V LVDS 3.3V LVDS
100n
Stripline Stripline
Tx(DC)
100n
Published Infineon Technologies
Warnings technical requirements components contain dangerous substances. information types question please contact your Infineon Technologies offices. Infineon Technologies Components only used life-support devices systems with express written approval Infineon Technologies, failure such components reasonably expected cause failure that life-support device system, affect safety effectiveness that device system. Life support devices systems intended implanted human body, support and/or maintain sustain and/or protect human life. they fail, reasonable assume that health user other persons endangered.
Infineon Technologies 2001 Rights Reserved
Attention please! information herein given describe certain components shall considered warranted characteristics. Terms delivery rights technical change reserved. hereby disclaim warranties, including limited warranties non-infringement, regarding circuits, descriptions charts stated herein. Infineon Technologies approved CECC manufacturer. Information further information technology, delivery terms conditions prices please contact Infineon Technologies offices Infineon Technologies Representatives worldwide webpage www.infineon.com/fiberoptics
Infineon Technologies Fiber Optics Wernerwerkdamm Berlin D-13623, Germany Infineon Technologies, Inc. Fiber Optics 1730 North First Street Jose, 95112, Infineon Technologies K.K. Fiber Optics Takanawa Park Tower 20-14, Higashi-Gotanda, 3-chome, Shinagawa-ku Tokyo 141, Japan
100n
DES*
Rx(AC)
DES*

Introduction different applications high speed optical transmitters (T

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