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參數(shù)資料
| 型號(hào)： | P2041A-08ST |
| 廠商： | ALLIANCE SEMICONDUCTOR CORP |
| 元件分類： | XO, clock |
| 英文描述： | Versatile EMI Reduction IC |
| 中文描述： | 40.4 MHz, OTHER CLOCK GENERATOR, PDSO8 |
| 封裝： | SOIC-8 |
| 文件頁數(shù)： | 3/9頁 |
| 文件大?。?/td> | 285K |
| 代理商： | P2041A-08ST |
November 2003
rev F
Spread spectrum selection
Table 1 illustrates the 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, Pin 1).
P2041A
Versatile EMI Reduction
IC
Notice: The information in this document is subject to change without notice.
3 of 9
Example of a typical printer or scanner application that operates on a clock frequency of 40 MHz:
A spreading selection of SR1=1 and SR0=1 provides a percentage deviation of +/-1.00%* (see Table 1) of F
cen
.
This results in the frequency on ModOUT being swept from 40.40 MHz to 39.60 MHz at a modulation rate of
40/40*34.72=34.72 KHz (see Table 1). This particular example (see Figure below) given here is a common EMI
reduction method for scanners and has already been implemented by most of the leading manufacturers.
NOTE:
Spreading range selection varies from different system manufacturers and their designs. The spreading range of P2041 can be set
to +/-2.5% when working with certain scanner model.
P2041 Application Schematic for Flat-Bed Scanner
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| P2041A-08TT | Versatile EMI Reduction IC |
| P2042AF-08SR | LCD Panel EMI Reduction IC |
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| P2041A-08TR | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:Versatile EMI Reduction IC |
| P2041A-08TT | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:Versatile EMI Reduction IC |
| P2041AF-08SR | 制造商:ON Semiconductor 功能描述: |
| P2041AF-08ST | 制造商:PULSECORE 制造商全稱:PulseCore Semiconductor 功能描述:Versatile EMI Reduction IC |
| P2041AF-08TR | 制造商:PULSECORE 制造商全稱:PulseCore Semiconductor 功能描述:Versatile EMI Reduction IC |
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