1.25 Gbps bi-directional SC Receptacle
single Fiber Transceiver
B-1X/1X-1250C-F(DFB)-SSCx
Recommended Circuit Schematic
PHY DEVICE
TERMINATE AT
TRANSCEIVER INPUTS
Vcc(+3.3V)
Z=50
�½
TD-
100
�½
LVPECL
Z=50
�½
130
�½
TD+
130
�½
10
TD-
9
TD+
8
TxDIS
7
TxGND
6
1
�½
H
TxVcc
Tx Disable
LVTTL
Vcc(+3.3V)
C3
Tx
Rx
C2
10
�½
F
RxGND
RxVcc
RD+
RD-
SD
1
�½
H
C1
Vcc(+3.3V)
RD+
1
2
3
4
5
Z=50
�½
100
�½
RD-
LVPECL
Z=50
�½
130
�½
130
�½
Z=50
�½
Vcc(+3.3V)
SD
LVTTL
NOTE:C1=C2=C3=100nF
TERMINATE AT
DEVICE INPUTS
The split-loaded terminations for ECL signals need to be located at the input of devices receiving those ECL signals.
The power supply filtering is required for good EMI performance. Use short tracks from the inductor L1/L2 to the module Rx Vcc.
A GND plane under the module is required for good EMI and sensitivity performance.
LUMINENTOIC.COM
20550 Nordhoff St. • Chatsworth, CA 91311 • tel: 818.773.9044 • fax: 818.576.9486
9F, No 81, Shui Lee Rd. • Hsinchu, Taiwan, R.O.C. • tel: 886.3.5169222 • fax: 886.3.5169213
5
LUMNDS796-Jan2407
Rev. A.3
SOURCE [ SOURCE PHOTONICS, INC. ]
