V23826-C18-C363 Datasheet, PDF (5/8 Pages) Infineon Technologies AG – Single Mode 155 MBd ATM/SDH/SONET 1x9 Transceiver

APPLICATION NOTE
Single Mode 155 MBd ATM 1x9 Transceiver
Laser
Driver
TxVEE 9
TxD 8 _C6
TxD 7 C7
VCC SerDes
5 V / 3.3 V
Infineon Transceiver
V23826-C18-C63/363
DC/DC Option
Signal
Detect
Pre-
Amp
Limiting _RD-
Amplifier
RD+
VCCTx 6
C1
VCCRx 5
L1
VCC
5 V / 3.3 V
L2
C3
C2
SD 4
SD to upper level
R9
RxD 3
C4
RxD 2
C5
RxVEE 1
VCC
TX+
ECL/PECL
Driver
TX-
Serializer/
Deserializer
RD-
RD+
Receiver
PLL etc.
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
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 con-
nected to SerDes-Chips using standard PECL Termination
network.
Value of R1...R4 may vary as long as proper 50 Ω termination to
V_EE 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 V_CCRx/V_CCTx. Further applica-
tion notes for electrical interfacing are available upon request.
Ask for Appnote 82.
We strongly recommend a V_EE plane under the module for get-
ting good EMI performance.
The transceiver contains an automatic shutdown circuit. Reset
is only possible if the power is turned off, and then on again.
(V_CCTx switched below V_TH).
Application Board available on request.
Fiber Optics
V23826-C18-C63/C363, Single Mode 155 MBd ATM/SDH/SONET 1x9 Trx (DC/DC)
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