W83194R-17A Winbond, W83194R-17A Datasheet - Page 19

• Manufacturer Part Number: W83194R-17A
• Description: 100MHZ AGP CLOCK FOR SIS CHIPSET
• Manufacturer: Winbond

12.0 POWER SUPPLY SUGGESTION
1.A solid ground plane should be placed around the clock device. Ground connections should be tied
2.C21,C22,C31,C36 are decoupling capacitors ( 0.1 £ g F surface mount, low ESR, ceramic
3.C1 and C2 are supply filtering capacitors for low frequency power supply noise. A 22 £ g F (or
4.Use of Ferrite Bead ’s (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
to this main ground plane as short as possible. No cuts should be made in the ground plane around
the device.
capacitors.) They should be placed as possible as the Vdd pin and the ground via.
10 £g F) tantalum capacitor is recommended.
resistance is negligible.
C1
FB1
C32
C31
C33
C34
Vdd Plane
16
10
11
12
13
14
15
17
18
19
20
21
22
23
24
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2
3
4
6
7
9
5
8
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32
31
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25
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35
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36
Publication Release Date: Sep. 1998
W83194R-17/-17A
Vdd2 Plane
PRELIMINARY
C21
C35
C22
C36
Revision 0.20
FB2
(3.3Vor2.5V)
Vdd2
C2