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FS782BT

更新时间： 2024-11-02 20:28:31
品牌 Logo 应用领域
赛普拉斯 - CYPRESS 时钟光电二极管外围集成电路晶体
页数 文件大小 规格书
13页 102K
描述
Clock Generator, 82MHz, CMOS, PDSO8, 4.40 MM, TSSOP-8

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中文翻译

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FS782BT 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
零件包装代码：SOIC包装说明：4.40 MM, TSSOP-8
针数：8Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.88Is Samacsys：N
其他特性：ALSO OPERATES AT 5V SUPPLYJESD-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：82 MHz封装主体材料：PLASTIC/EPOXY
封装代码：TSSOP封装等效代码：TSSOP8,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：NOT SPECIFIED电源：3.3/5 V
主时钟/晶体标称频率：66 MHz认证状态：Not Qualified
座面最大高度：1.1 mm子类别：Clock Generators
最大供电电压：3.63 V最小供电电压：2.97 V
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处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：3 mmuPs/uCs/外围集成电路类型：CLOCK GENERATOR, OTHER
Base Number Matches：1

FS782BT 数据手册

 浏览型号FS782BT的Datasheet PDF文件第2页浏览型号FS782BT的Datasheet PDF文件第3页浏览型号FS782BT的Datasheet PDF文件第4页浏览型号FS782BT的Datasheet PDF文件第5页浏览型号FS782BT的Datasheet PDF文件第6页浏览型号FS782BT的Datasheet PDF文件第7页 
APPROVED PRODUCT  
FS781/82/84  
LOW EMI SPECTRUM SPREAD CLOCK  
•
•
•
•
•
•
•
•
•
Desktop/Notebook Computers  
Printers, Copiers and MFP  
Scanners and Fax  
Features  
•
Spread Spectrum Clock Generator (SSCG)  
with 1x, 2x and 4x Outputs  
•
•
6 to 82 MHz operating frequency range.  
LCD Displays and Monitors  
CD-ROM, VCD and DVD  
Automotive and Embedded Systems  
Networking, LAN/WAN  
Modulates external clocks including crystals,  
crystal oscillators and ceramic resonators.  
•
Programmable modulation with simple  
R-C external loop filter (LF)  
Center Spread Modulation.  
3 - 5 Volt power supply.  
Digital Cameras and Camcorders  
Modems  
•
•
•
•
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TTL/CMOS compatible outputs.  
Low short term jitter.  
Benefits  
•
•
•
•
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Programmable EMI Reduction  
Low Power Dissipation;  
Fast Time to Market  
3.3 VDC = 37 mw - typical  
5.0 VDC = 115 mw - typical  
Lower cost of compliance  
No degradation in Rise/Fall times  
Lower component and PCB layer count  
•
Available in 8 pin SOIC and TSSOP  
packages.  
Applications  
Product Description  
The Cypress FS781/2/4 are Spread Spectrum Clock Generator ICs (SSCG) designed for the purpose of reducing  
Electro Magnetic Interference (EMI) found in today’s high-speed digital systems.  
The FS781/2/4 SSCG clocks use an IMI proprietary technology to modulate the input clock frequency, FSOUT by  
modulating the frequency of the digital clock. By modulating the reference clock the measured EMI at the  
fundamental and harmonic frequencies of FSOUT is greatly reduced. This reduction in radiated energy can  
significantly reduce the cost of complying with regulatory requirements without degrading digital waveforms.  
The Cypress FS781/2/4 clocks are very simple and versatile devices to use. By programming the two range  
select lines, S0 and S1, any frequency from 6 to 82 MHz operating range can be selected. The FS781/2/4 are  
designed to operate over a very wide range of input frequencies and provides 1x, 2x and 4x modulated clock  
outputs.  
The FS78x devices have a simple frequency selection table that allows operation from 6 MHz to 82 MHz in four  
separate ranges. The bandwidth of the frequency spread at FSOUT is determined by the values of the loop filter  
components. The modulation rate is determined internally by the input frequency and the selected input frequency  
range.  
The Bandwidth of these products can be programmed from as little as 0.6% up to as much as 4.0% by selecting  
the proper loop filter value. Refer to the Loop Filter Selection chart on page 6 for recommended values. Due to a  
wide range of application requirements, an external loop filter (LF) is used on the FS78x products. The user can  
select the exact amount of frequency modulation suitable for the application. Using a fix internal loop filter would  
severely limit the use of a wide range of modulation bandwidths (Spread %) to a few discrete values.  
Refer to FS791/2/4 products for applications requiring 80 to 140 MHz frequency range.  
Cypress Semiconductor Corporation  
525 Los Coches St.  
Milpitas, CA 95035. Tel: 408-263-6300, Fax: 408-263-6571  
http://www.cypress.com  
Document#: 38-07029 Rev. **  
05/07/2001  
Page 1 of 13  
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中文翻译

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