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參數(shù)資料
| 型號(hào)： | ICS9155-02W14L |
| 英文描述： | Low Cost 20-Pin Frequency Generator |
| 中文描述： | 低成本20引腳頻率發(fā)生器 |
| 文件頁(yè)數(shù)： | 9/11頁(yè) |
| 文件大?。?/td> | 387K |
| 代理商： | ICS9155-02W14L |
9
AV9155
AV9155 Recommended Board Layout
This is the recommended layout for the
AV9155
to maximize clock performance. Shown are the power and ground connections,
the ground plane, and the input/output traces.
Use of the isolated ground plane and power connection, as shown, will prevent stray high frequency ground and system noise
from propagating through the device. When compared to using the system ground and power planes, this technique will
minimize output clock jitter. The isolated ground plane should be connected to the system ground plane at one point, near the
2.2μF decoupling cap. For lowest jitter performance, this isolated ground plane should be kept away from clock output pins and
traces. Keeping the isolated ground plane area as small as possible will minimize EMI radiation. Use a sufficient gap between the
isolated ground plane and system ground plane to prevent AC coupling. The ferrite bead in the VDD line optional, but will help
reduce EMI.
The traces to distribute the output clocks should be over a system ground or power supply plane. The trace width should be
about two times the thickness of the PC board between the trace and the underlying plane. These guidelines help minimize clock
jitter and EMI radiation. The traces to distribute power should be as wide as possible.
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