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参数资料
| 型号： | ASM3P2111AF-08-SR |
| 厂商： | ALLIANCE SEMICONDUCTOR CORP |
| 元件分类： | XO, clock |
| 英文描述： | 66.6 MHz, OTHER CLOCK GENERATOR, PDSO8 |
| 封装： | SOIC-8 |
| 文件页数： | 1/8页 |
| 文件大小： | 410K |
| 代理商： | ASM3P2111AF-08-SR |
Alliance Semiconductor
2575 Augustine Drive
Santa Clara CA Tel: 408-855-4900 Fax: 408-855-4999 www.alsc.com
rev 1.1
November 2003
ASM3P2111A
Features
Generates an EMI optimized clocking
signal at output.
Input frequency – 25 MHz.
Frequency outputs:
o
60 MHz (unmodulated)
o
2 x 48 MHz (unmodulated)
o
66.6 MHz (modulated) -1.7% down
spread
Modulation rate: 30 KHz.
Supply voltage range 3.3V (± 0.3V).
Available in 8-pin SOIC package.
Commercial and Industrial Temperature
range.
Product Description
The ASM3P2111A is a versatile spread spectrum
frequency
modulator.
The
ASM3P2111A
reduces
electromagnetic interference (EMI) at the clock source.
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.
Applications
ASM3P2111A is targeted towards EMI management for
high speed digital applications such as PC peripheral
devices, consumer electronics and embedded controller
systems.
Block Diagram
VDD
Crystal
Oscillator
66.6 MHz
Modulated
XIN
XOUT
VSS
48 MHz_2
60 MHz
48 MHz_1
PLL1
PLL2
48 MHz_1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ASM3P2111AF-08ST | 制造商:ALSC 制造商全称:Alliance Semiconductor Corporation 功能描述:Peak EMI Reducing Solution |
| ASM3P2111B | 制造商:ALSC 制造商全称:Alliance Semiconductor Corporation 功能描述:Peak EMI Reducing Solution |
| ASM3P2111BF-08SR | 制造商:ALSC 制造商全称:Alliance Semiconductor Corporation 功能描述:Peak EMI Reducing Solution |
| ASM3P2111BF-08ST | 制造商:ALSC 制造商全称:Alliance Semiconductor Corporation 功能描述:Peak EMI Reducing Solution |
| ASM3P2111BG-08SR | 功能描述:时钟发生器及支持产品 3.3V CUSTOM CG RoHS:否 制造商:Silicon Labs 类型:Clock Generators 最大输入频率:14.318 MHz 最大输出频率:166 MHz 输出端数量:16 占空比 - 最大:55 % 工作电源电压:3.3 V 工作电源电流:1 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-56 |
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