V23826-K305-C13 Datasheet, PDF (12/17 Pages) Infineon Technologies AG – Multimode 850 nm 1.0625 Gbit/s Fibre Channel 1.3 Gigabit Ethernet 1x9 Transceiver

V23826-K305-Cxx/Cxxx
Application Notes
Multimode 850 nm Gigabit Ethernet/Fibre Channel 1x9 Transceiver,
AC/DC Version
Laser
Driver
100 Ω
VEETx 9
TD+ 8
1)
TD− 7
VCC SerDes
5 V / 3.3 V
Infineon Transceiver
Signal
Detect
Pre-
Amp
Limiting _RD-
Amplifier
RD+
VCCTx 6
C1
VCCRx 5
C2
SD 4
1)
RD− 3
RD+ 2
L1
VCC
5 V / 3.3 V
L2
C3
SD to upper level
R9
C4
C5
VEERx 1
VCC
Tx+
ECL/PECL
Driver
Tx-
Serializer/
Deserializer
Gigabit
Transceiver
Chip
RD-
RD+
Receiver
PLL etc.
C1/2/3
= 4.7 µF
C4/5
= 10 nF
L1/2
= 1 µH
R1/2/3/4/7/8 = Biasing (depends on SerDes chip)
R5/6
= 270 Ω (5 V)
= 150 Ω (3.3 V)
R9
= 510 Ω (5 V)
= 270 Ω (3.3 V)
Place R1/2/3/4/7/8 close to SerDes chip.
Place R5/6 close to Infineon transceiver.
1) Design criterion of the capacitor used is the
resonant frequency and its value must be
in the order of thenominal data rate.
Short trace lengths are mandatory.
File: 1387
Figure 6
Values of R1/2/3/4 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.
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.
Data Sheet
12
2004-01-27