V23826-C18-T63 Datasheet, PDF (10/12 Pages) Infineon Technologies AG – 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
Application Notes
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 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 application notes for
electrical interfacing are available upon request. Ask for Appnote 82.
We strongly recommend a V_EE 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. (V_CCTx switched below V_TH).
Application Board available on request.
Data Sheet
10
2000-01-01