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P2184BG-08-TR

更新时间： 2024-11-11 05:58:51
品牌 Logo 应用领域
PULSECORE 晶体时钟发生器微控制器和处理器外围集成电路光电二极管
页数 文件大小 规格书
9页 175K
描述
Peak Reducing EMI Solution

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P2184BG-08-TR 技术参数

生命周期：Obsolete包装说明：GREEN, TSSOP-8
Reach Compliance Code：unknown风险等级：5.82
Is Samacsys：NJESD-30 代码：R-PDSO-G8
长度：4.4 mm端子数量：8
最高工作温度：70 °C最低工作温度：
最大输出时钟频率：40 MHz封装主体材料：PLASTIC/EPOXY
封装代码：TSSOP封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH主时钟/晶体标称频率：40 MHz
认证状态：Not Qualified座面最大高度：1.1 mm
标称供电电压：3.3 V表面贴装：YES
技术：CMOS温度等级：COMMERCIAL
端子形式：GULL WING端子节距：0.65 mm
端子位置：DUAL宽度：3 mm
uPs/uCs/外围集成电路类型：CLOCK GENERATOR, OTHERBase Number Matches：1

P2184BG-08-TR 数据手册

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November 2006  
rev 1.1  
P2180 / 81 / 82 / 83 / 84  
Peak Reducing EMI Solution  
Features  
•
•
•
FCC approved method of EMI attenuation.  
•
Eight spread % selections:  
± 0.625% to -3.5%.  
Provides up to 15dB EMI reduction.  
Generates a 1X low EMI spread spectrum clock  
from the input frequency.  
•
•
•
•
•
3.3V operating voltage.  
CMOS/TTL compatible inputs and outputs.  
Low-power CMOS design.  
Supports notebook VGA and other LCD timing  
controller applications.  
Drop-in replacement to Cypress W180/1.  
Products are available for industrial temperature  
range.  
•
Optimized for frequency range:  
•
P2180 / 84: 20MHz to 40MHz  
P2181: 60MHz to 160MHz  
P2182 / 83: 10MHz to 20MHz  
•
•
•
•
•
•
•
Internal  
loop  
filter  
minimizes  
external  
components and board space.  
Selectable spread options: Down Spread and  
Center Spread.  
•
Available in 8-pin SOIC and TSSOP packages.  
Low inherent cycle-to-cycle jitter.  
Product Description  
The P2180/81X modulates the output of a single  
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.  
The P2180/81X is a versatile spread spectrum  
frequency modulator designed specifically for a  
wide range of clock frequencies from 20MHz to  
40MHz and 60MHz to 160MHz (Refer Input  
Frequency and Modulation Rate Table.) The  
P2180/81X can generate an EMI reduced clock  
form an OSC or a system generated clock. The  
P2180/81A  
to  
P2180/81D  
offer  
various  
combinations of spread options and percentage  
deviations. (Refer Spread Deviation Selections  
Table.) These combinations include Down and  
Center Spread and percentage deviation range  
from ± 0.625% to –3.50%.  
The P2180/81X uses the most efficient and  
optimized modulation profile approved by the FCC  
and is implemented by using a proprietary all-digital  
method.  
Applications  
The  
P2180/81X  
reduces  
electromagnetic  
interference (EMI) at the clock source, allowing  
system wide reduction of EMI of down stream clock  
and data dependent signals. The P2180/81X allows  
significant system cost savings by reducing the  
number of circuit board layers and shielding that  
are traditionally required to pass EMI regulations.  
The P2180/81X is targeted towards EMI  
management for memory and LVDS interfaces in  
mobile graphic chipsets and high-speed digital  
applications such as PC peripheral devices,  
consumer electronics, and embedded controller  
systems.  
PulseCore Semiconductor Corporation  
1715 S. Bascom Ave Suite 200, Campbell, CA 95008 • Tel: 408-879-9077 • Fax: 408-879-9018  
www.pulsecoresemi.com  
Notice: The information in this document is subject to change without notice.  
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