Delta 1x9 Bi-Directional Transceiver Module OPBD-155F2J1R Specification Sheet page 5

7. Recommended Interface Circuit (AC Coupling)
Laser Laser
Driver Driver
Delta Transceiver Delta Transceiver
Signal detect Signal detect
LIM ITING LIM ITING
Pre- Pre-
Am p Am p
Amplifier Amplifier
C1/2/3 = 4.7 uF
C4/5/6/7 = 100 nF
L1/2 = 1 uH
=82 Ω (If C4/5=0, then R1/2 =130 Ω, it is for DC-coupled.)
R1/2
=130 Ω (If C4/5=0, then R3/4 =82 Ω, it is for DC-coupled.)
R3/4
=150 Ω
R7/8
R5/6/9/10/11/12
= 270 Ω
R13
Value of R5/6/9/10/11/12 may vary as long as proper 50 Ω termination or differential 100 Ω is
provided. For good EMI performance, the power supply filter is required. Use shorter tracks from the
inductor L1/2 to the module VccTx/VccRx .
DELTA ELECTRONICS, INC.
TXGND TXGND
9 9
TxD TxD
8 8
TxD TxD
7 7
VCCTx VCCTx
6 6
L2 L2
C1 C1
VCCRx VCCRx
5 5
L1 L1
C2 C2
SD SD
4 4
RxD RxD
3 3
RxD RxD
2 2
RxGND RxGND
1 1
Depend on SerDes chip used
VCC SerDes VCC SerDes
3.3V 3.3V
3.3V 3.3V
C4 C4
C5 C5
VCC SerDes VCC SerDes
3.3V 3.3V
3.3V 3.3V
C3 C3
S D to upper leve l S D to upper leve l
R13 R13
C6 C6
C7 C7
5
OPBD-155F2J1R
VCC VCC
TX+ TX+
ECL/PECL ECL/PECL
DRIVER DRIVER
TX- TX-
Serializer/ Serializer/
De se rialize r De se rialize r
RD- RD-
Receiver Receiver
PLL etc. PLL etc.
RD+ RD+
Revision: S2
03/09/2007
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