P1708CF-08SR

更新时间： 2024-11-24 22:24:27

品牌	Logo	应用领域
ALSC		逻辑集成电路光电二极管电脑驱动
页数	文件大小	规格书
10页	474K
描述
Low Power Notebook LCD Panel EMI Reduction IC

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中文翻译

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数据手册

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P1708CF-08SR 数据手册

June 2004

rev 1.1

P1708C

Low Power Notebook LCD Panel EMI Reduction IC

Features

down stream clock and data dependent signals. The

P1708C allows significant system cost savings by reducing

the number of circuit board layers ferrite beads, shielding

and other passive components that are traditionally

required to pass EMI regulations.

FCC approved method of EMI attenuation.

Generates a low EMI spread spectrum clock of the

input frequency.

Optimized for frequency range from 50 to 110MHz.

Internal loop filter minimizes external components

and board space.

The P1708C modulates the output of a single PLL in order

to “spread” the bandwidth of a synthesized clock, and more

importantly, decreases 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 frequency generators. Lowering EMI

by increasing a signal’s bandwidth is called ‘spread

spectrum clock generation’.

Four selectable spread ranges.

Low inherent cycle-to-cycle jitter.

3.3V operating voltage range.

TTL or CMOS compatible inputs and outputs.

Ultra-low power CMOS design.

8.46 mA @3.3V, 54MHz

9.79 mA @3.3V, 65MHz

12.06 mA @3.3V, 81MHz

16.51 mA @3.3V, 108MHz

The P1708C uses the most efficient and optimized

modulation profile approved by the FCC and is

implemented in a proprietary all digital method.

Supports notebook VGA and other LCD timing

controller applications.

Pinout compatible to ICS MK1708 and Cypress

CY25560.

SSON/SBM pin for Spread Spectrum On/Off and

Standby Mode controls.

Available in 8-pin SOIC and TSSOP.

Applications

The P1708C is targeted towards notebook LCD displays,

and other displays using an LVDS interface, PC peripheral

devices, and embedded systems.

Product Description

The P1708C is a versatile spread spectrum frequency

modulator designed specifically for input clock frequencies.

The P1708C reduces electromagnetic interference (EMI) at

the clock source, allowing system wide reduction of EMI of

VDD

SSON

SR1

SR0

Block Diagram

PLL

Modulation

CLKIN

Frequency

Divider

Output

Phase

Loop

Filter

VCO

Divider

Detector

Feedback

Divider

ModOUT

VSS

Alliance Semiconductor

2575, Augustine Drive • Santa Clara, CA • Tel: 408.855.4900 • Fax: 408.855.4999 • www.alsc.com

Notice: The information in this document is subject to change without notice.

12 3 4 5 6 7...10

中文翻译

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与P1708CF-08SR相关器件

型号	品牌	获取价格	描述	数据表
P1708CF-08ST	PULSECORE	获取价格	Low Power Notebook LCD Panel EMI Reduction IC
P1708CF-08ST	ALSC	获取价格	Low Power Notebook LCD Panel EMI Reduction IC
P1708CF-08TR	ONSEMI	获取价格	Notebook LCD Panel EMI Reduction IC
P1708CF-08TR	PULSECORE	获取价格	Low Power Notebook LCD Panel EMI Reduction IC
P1708CF-08TR	ALSC	获取价格	Low Power Notebook LCD Panel EMI Reduction IC
P1708CF-08TT	PULSECORE	获取价格	Low Power Notebook LCD Panel EMI Reduction IC
P1708CF-08TT	ALSC	获取价格	Low Power Notebook LCD Panel EMI Reduction IC
P1708CG-08SR	PULSECORE	获取价格	Low Power Notebook LCD Panel EMI Reduction IC
P1708CG-08ST	PULSECORE	获取价格	Low Power Notebook LCD Panel EMI Reduction IC
P1708CG-08TR	PULSECORE	获取价格	Low Power Notebook LCD Panel EMI Reduction IC

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