- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄367654 > P2005X-08SR (Alliance Semiconductor Corporation) Low Frequency EMI Reduction IC PDF資料下載
參數(shù)資料
| 型號： | P2005X-08SR |
| 廠商： | Alliance Semiconductor Corporation |
| 英文描述： | Low Frequency EMI Reduction IC |
| 中文描述： | 低頻電磁干擾降低集成電路 |
| 文件頁數(shù)： | 3/10頁 |
| 文件大?。?/td> | 459K |
| 代理商： | P2005X-08SR |
October 2003
rev 1.0
Spread Spectrum
The
Output Frequency Selection Table and the Frequency Deviations Selections Table
illustrate the two
possible spread spectrum options. The optimal setting should minimize system EMI to the fullest without
affecting system performance. The spreading is described as a percentage deviation of the center frequency
(Note: The center frequency is the frequency of the external reference input on CLKIN, Pin1).
Example:
The P2005X is designed for communications, digital video and imaging applications. It is not only optimized for
operation in the 8MHz – 32MHz range, but its output frequency can be extended down to one half of the input
clock frequency using the divide-by-two feature. This feature extends low frequency as low as to 4MHz. Setting
Pin 3 low (DIV2 = 0; Divide-by-two mode) sets the output frequency (ModOUT) to half the frequency of the input
clock (CLKIN). This is a simple way to generate a spread spectrum modulated low frequency clock when only a
higher frequency signal is available. If you want the output frequency to be the same as the input, you can either
set DIV2=1 or leave it unconnected.
Selecting the P2005X’s spread options is a matter of either setting SR0=1 or SR0=0. Setting SR0=0 set as a
lower modulation spread, while setting it to 1 introduces a wider spectral spread in the output clock.
Refer
Modulation output and Spreading Selections Tables.
The example given in the figure below shows the device
set to the divide-by-two mode (DIV2=0) with a lower spectrum range (SR0=0). The versatility provided by
allowing both clock division and spread spectrum on one chip is already proving to be a popular solution among
leading system manufacturers.
P2005X Application Schematic
P2005X
General purpose EMI Reduction IC
3 of 10
Notice: The information in this document is subject to change without notice.
1
2
3
4
CLKIN
XOUT
DIV2
VSS
MODOUT
5
6
7
8
SR0
SSON#
VDD
8.832MHz Crystal
Modulated 4.416MHz is
connected to CLK input
pin of the system
+3.3V
0.1μF
P2005X
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| P2005X-08ST | Low Frequency EMI Reduction IC |
| P2005X-08TR | Low Frequency EMI Reduction IC |
| P2005X-08TT | Low Frequency EMI Reduction IC |
| P2005A | Low Frequency EMI Reduction IC |
| P2008A-08TR | General Purpose EMI Reduction IC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| P2005X-08ST | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:Low Frequency EMI Reduction IC |
| P2005X-08TR | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:Low Frequency EMI Reduction IC |
| P2005X-08TT | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:Low Frequency EMI Reduction IC |
| P200-6 | 制造商: 功能描述: 制造商:undefined 功能描述: |
| P-200838 | 制造商:Amphenol Aerospace 功能描述:PLUG |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。