V23818-C18-L47 Datasheet, PDF (15/17 Pages) Infineon Technologies AG – Small Form Factor Single Mode 1300 nm Multirate up to 155 Mbit/s Transceiver 2x5 Pinning with LC™ Connector

2x5 AC/AC Transceiver
V23818-C18-Lxx/L4xx
Recommended Termination Schemes
Laser
Driver
100 Ω
VEEt 7
TD+ 9
TD− 10 ^C4
TDis 8
VCCt ⁶
TDis
SFF Transceiver
C1
VCCr 2
C2
Signal
Detect
SD 3
VCC SerDes
L1 _VCC
3.3 V
L2
C3 C6
SD
Pre-
Amp
Limiting _RD−
Amplifier
RD+
RD− 4
RD+ 5 ^C5
VEEr 1
VCC
SerDat Out +
SerDat Out −
ECL/
PECL
Driver
Serializer/
Deserializer
SerDat In −
SerDat In +
Receiver
PLL etc.
C1/2/3 = 4.7 ... 10 µF
C4/5/6 = Design criterion is the resonance frequency only. The self resonant frequency of the
capacitor must be in the vicinity of the nominal data rate. Short traces are mandatory.
L1/2^*) = 1 ... 4.7 µH
R1/2/3/4 = Depends on SerDes chip used, ensure proper 50 Ω termination to V_EE or 100 Ω
differential is provided. Check for termination inside of SerDes chip.
R5/6 = Biasing (depends on SerDes chip).
Place R1/2/3/4/5/6 close to SerDes chip.
*) _{The inductors may be replaced by appropriate Ferrite beads.}
File: 1393
Figure 7
Data Sheet
15
2003-06-06