1.25 Gbps Single Mode SFF LC Transceiver
C-13-1250-F-SLC(2)
Recommended Circuit Schematic
C-13-1250AC-F-SLC(2)
TX_DIS
8
TTL logic level
TX_GND 7
TRANSMITTER
TX_D 9
DRIVER
Z=50�½
Z=50�½
TD +
TX_D 10
Vcc_TX
Vcc_RX
TD -
LASER
6
2
See
Fig. 3
See
Fig. 2
Note 1
Serializer / De-Serializer
with LV PECL lnputs/Outputs
Vcc= +3.3V
BIAS
PIN
SD
RX_D
TZ
AMP
POST
AMP
3
Z=50�½
4
82
Ω
82
Ω
RD -
RX_D
RX_GND
5
1
Z=50�½
130
Ω
130
Ω
RD +
RECEIVER
Figure 1: Recommended Transceiver and Receive Data Terminations (AC-coupled)
C-13-1250-F-SLC(2)
TERMINATE AT
TRANSCEIVER INPUTS
Z=50
�½
TD-
PHY DEVICE
Vcc(+3.3V)
100
�½
LVPECL
Z=50
�½
TD+
10
TD-
9
TD+
8
TxDIS
7
TxGND
6
1
�½
H
130
�½
Vcc(+3.3V)
C3
130
�½
TxVcc
Tx
Rx
C2
10
�½
F
RxGND
RxVcc
RD+
RD-
SD
1
�½
H
C1
RD+
Vcc(+3.3V)
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)
130
�½
SD
82
�½
NOTE:C1=C2=C3=100nF
TERMINATE AT
DEVICE INPUTS
Figure 1b: Recommended Transceiver and Receive Data Terminations (AC-coupled)
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
LUMNDS828-Apr2406
Rev A.1
5
SOURCE [ SOURCE PHOTONICS, INC. ]
