Datasheet > P1727DG-08ST

P1727DG-08ST

更新时间： 2024-09-19 05:58:47

品牌	Logo	应用领域
PULSECORE		电脑
页数	文件大小	规格书
9页	178K
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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P1727DG-08ST 数据手册

April 2007

rev 0.2

P1727

Low Power Notebook LCD Panel EMI Reduction IC

Features

• FCC approved method of EMI attenuation

• Generates a low EMI spread spectrum of

the input clock frequency

• Optimized for frequency range:

P1727X: 20MHz to 40MHz

• Internal loop filter minimizes external

components and board space

• 8 different frequency deviations ranging

from +/-0.625% to –3.50%

• Low inherent Cycle-to-cycle jitter

• 3.3V Operating Voltage

• Supports notebook VGA and other LCD

timing controller applications

• Available in 8 pin SOIC and TSSOP

• Qualified for Industrial Temp Spec.

(-40°C to +85°C)

significant system cost savings by reducing the number

of circuit board layers and shielding that are traditionally

required to pass EMI regulations.

The P1727 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 result 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 P1727 uses the most efficient and optimized

modulation profile approved by the FCC and is

implemented by using a proprietary all-digital method.

Applications

Product Description

The P1727 is targeted towards notebook LCD displays,

other displays using an LVDS interface, PC peripheral

devices and embedded systems.

The P1727 is a versatile spread spectrum

frequency modulator designed specifically for a wide

range of clock frequencies. The P1727 reduces

electromagnetic interference (EMI) at the clock source,

allowing system wide reduction of EMI of down stream

(clock and data dependent signals). The P1727 allows

Block Diagram

VDD

PDB

PLL

Modulation

CLKIN

Frequency

Divider

Phase

ModOUT

Loop

Filter

VCO

Output

Divider

Detector

Feedback

Divider

REFOUT

VSS

PulseCore Semiconductor

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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中文翻译

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与P1727DG-08ST相关器件

型号	品牌	获取价格	描述	数据表
P1727DG-08-ST	PULSECORE	获取价格	PLL Based Clock Driver, 1727 Series, 1 True Output(s), 0 Inverted Output(s), CMOS, PDSO8,
P1727DG-08TR	PULSECORE	获取价格	Low Power Notebook LCD Panel EMI Reduction IC
P1727DG-08-TR	PULSECORE	获取价格	PLL Based Clock Driver, 1727 Series, 1 True Output(s), 0 Inverted Output(s), CMOS, PDSO8,
P1727DG-08TT	PULSECORE	获取价格	Low Power Notebook LCD Panel EMI Reduction IC
P1727DG-08-TT	PULSECORE	获取价格	PLL Based Clock Driver, 1727 Series, 1 True Output(s), 0 Inverted Output(s), CMOS, PDSO8,
P1727DG-08-TT	ONSEMI	获取价格	1727 SERIES, PLL BASED CLOCK DRIVER, 1 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO8, 4.40 M
P1727E-08ST	ALSC	获取价格	PLL Based Clock Driver, 1 True Output(s), 0 Inverted Output(s), CMOS, PDSO8, SOIC-8
P1727E-08TR	ALSC	获取价格	PLL Based Clock Driver, 1 True Output(s), 0 Inverted Output(s), CMOS, PDSO8, TSSOP-8
P1727E-08TT	ALSC	获取价格	PLL Based Clock Driver, 1 True Output(s), 0 Inverted Output(s), CMOS, PDSO8, TSSOP-8
P1727EG-08SR	PULSECORE	获取价格	Low Power Notebook LCD Panel EMI Reduction IC

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