W83194R-37/-58 Winbond Electronics Corp America, W83194R-37/-58 Datasheet - Page 19

• Manufacturer Part Number: W83194R-37/-58
• Description: 100MHz/133MHz Via MVP3, Via Apollo Pro Clock Gen., 3-DIMM, With S.S.T.
• Manufacturer: Winbond Electronics Corp America

12.0 POWER SUPPLY SUGGESTION
1.A solid ground plane should be placed around the clock device. Ground connections should be
2.C21,C22,C31,C36 are decoupling capacitors ( 0.1µF surface mount, low ESR, ceramic capacitors.)
3.C1 and C2 are supply filtering capacitors for low frequency power supply noise. A 22µF (or 10µF)
4.Use of Ferrite Bead (FB) are recommended to further reduce the power supply noise.
5.The power supply race to the Vdd pins must be thick enough so that voltage drops across the trace
(3.3V)
Vdd
tied to this main ground plane as short as possible. No cuts should be made in the ground plane
around the device.
They should be placed as possible as the Vdd pin and the ground via.
tantalum capacitor is recommended.
resistance is negligible.
C1
FB1
- 19 -
C32
C31
C33
C34
Vdd Plane
16
10
11
12
13
14
15
17
18
19
20
21
22
23
24
1
2
3
4
6
7
9
5
8
33
32
31
30
29
28
27
26
25
48
47
46
45
43
42
41
40
39
38
37
36
35
34
44
Publication Release Date: Sep 1998
Vdd2 Plane
W83194R-37/-58
C21
C35
C22
C36
FB2
Revision 1.0
(3.3Vor2.5V)
Vdd2
C2