
6
2.5 Gbps Single Mode SFF LC Transceiver
C-1XX-2500(C)-FDFB-SLCX
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
LUMNDS851-Jul2005
rev. A.0
LUMINENTOIC.COM
Power Coupling
A suggested layout for power and ground connections is given in gure 4B below. Connections are made via separate voltage and ground
planes. The mounting posts are at case ground and should not be connected to circuit ground. The mounting posts are at case ground and
should not be connected to circuit ground. The ferrite bead should provide a real impedance of 50 to 100 ohms at 100 to 1000 MHz. Bypass
capacitors should be placed as close to the 10-pin connector as possible.
Figure 4A: Suggested Power Coupling-Electrical Schematic
TOP VIEW
VALUES:
C1, C2 = 1000pF,
C3,
= 0.1uF
C4,
= 10uF,
L1, L2 = Real impedance of 50 to
100 Ohms to 1000MHz.
LEHEND:
CIRCUIT GROUND PLANE CONNECTION
CASE GROUND
Vcc PLANE CONNECTION
NOTE :
1.) Components shown ore placed
on the bottom layer and are
viewed through the board.
C1 L2
C3 C4
L1
C2
Figure 4B: Suggested Power Coupling-Component Placement