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ASM3I2111AF-08SR PDF预览

ASM3I2111AF-08SR

更新时间: 2024-02-25 01:03:17
品牌 Logo 应用领域
ALSC 晶体外围集成电路光电二极管时钟
页数 文件大小 规格书
8页 207K
描述
Peak EMI Reducing Solution

ASM3I2111AF-08SR 技术参数

是否Rohs认证:符合生命周期:Obsolete
包装说明:LEAD FREE, SOIC-8Reach Compliance Code:unknown
风险等级:5.77Is Samacsys:N
JESD-30 代码:R-PDSO-G8长度:4.9 mm
端子数量:8最高工作温度:85 °C
最低工作温度:-40 °C最大输出时钟频率:66.6 MHz
封装主体材料:PLASTIC/EPOXY封装代码:SOP
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
峰值回流温度(摄氏度):NOT SPECIFIED主时钟/晶体标称频率:25 MHz
认证状态:Not Qualified座面最大高度:1.75 mm
最大供电电压:3.6 V最小供电电压:3 V
标称供电电压:3.3 V表面贴装:YES
技术:CMOS温度等级:INDUSTRIAL
端子形式:GULL WING端子节距:1.27 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:3.91 mmuPs/uCs/外围集成电路类型:CLOCK GENERATOR, OTHER
Base Number Matches:1

ASM3I2111AF-08SR 数据手册

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March 2005  
rev 1.3  
ASM3P2111A  
Peak EMI Reducing Solution  
Features  
The ASM3P2111A allows significant system cost savings  
by reducing the number of circuit board layers and  
shielding that are required to pass EMI regulations. The  
ASM3P2111A modulates the output of PLL in order to  
spread the bandwidth of a synthesized clock, thereby  
decreasing the peak amplitudes of its harmonics. This  
results in significantly lower system EMI compared to the  
typical narrow band signal produced by oscillators and  
most clock generators. Lowering EMI by increasing a  
signal’s bandwidth is called spread spectrum clock  
generation.  
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Generates an EMI optimized clocking signal at  
output.  
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Input frequency – 25 MHz.  
Frequency outputs:  
o
o
o
60 MHz (unmodulated)  
2 x 48 MHz (unmodulated)  
66.6 MHz (modulated) -1.7% down spread  
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Modulation rate: 30 KHz.  
Supply voltage range: 3.3V ± 0.3V.  
Available in 8-pin SOIC Package.  
Commercial and Industrial Temperature range.  
Applications  
Product Description  
ASM3P2111A is targeted towards EMI management for  
high speed digital applications such as PC peripheral  
devices, consumer electronics and embedded controller  
systems.  
The ASM3P2111A is  
frequency modulator. The ASM3P2111A reduces  
electromagnetic interference (EMI) at the clock source.  
a versatile spread spectrum  
Block Diagram  
V
DD  
60 MHz  
XIN /CLKIN  
XOUT  
Crystal  
Oscillator  
PLL1  
48 MHz_1  
48 MHz_2  
48 MHz_1  
PLL2  
66.6 MHz  
Modulated  
V
SS  
Alliance Semiconductor  
2575 Augustine Drive Santa Clara CA Tel: 408-855-4900 Fax: 408-855-4999 www.alsc.com  

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