Datasheet > FS791

FS791

更新时间： 2024-11-18 03:37:55

品牌	Logo	应用领域
赛普拉斯 - CYPRESS		时钟
页数	文件大小	规格书
9页	138K
描述
Low EMI Spectrum Spread Clock

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中文翻译

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数据手册

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FS791 数据手册

92/94

FS791/92/94

Low EMI Spectrum Spread Clock

Features

Applications

• Spread Spectrum Clock Generator (SSCG) with 1x, 2x

and 4x outputs

• 80- to 140-MHz operating frequency range

• 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

• TTL/CMOS compatible outputs

• Low short-term jitter

• Low Power Dissipation;

— 3.3 VDC = 73 mW—typical

• Desktop/Notebook computers

• VGA, XGA, and SXGA LCD displays

• High-speed printers and copiers

• CD-ROM, VCD, and DVD

• Embedded systems

• Networking, LAN/WAN

• Modems

Benefits

• Programmable EMI reduction

• Fast time-to-market

• Lower cost of compliance

• No degradation in Rise/Fall time

• Lower component and PCB layer count

— 5.0 VDC = 225 mW—typical

• Available in 8-pin SOIC package

Pin Configuration

Block Diagram

Loop Filter

Xin

Xout

VDD

Reference

Divider

Phase

Detector

10 pF.

FS79x

VCO

10 pF.

FSOUT

VSS

Modulation

Control

Xout

10 pF.

VCO / N

VDD

FSOUT

Counter

and

Mux

Power Contol

Logic

Input Control

VSS

Cypress Semiconductor Corporation

Document #: 38-07343 Rev *A

•

3901 North First Street

•

San Jose

•

CA 95134

•

408-943-2600

Revised December 28, 2002

12 3 4 5 6 7...9

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