ICS18102 datasheet(1/6 Pages) ICST

No. de pieza	ICS18102

Descripción Electrónicos	Low EMI Clock Generator

PDF	6 Pages

Scroll/Zoom	100%

Fabricante Electrónico	ICST [Integrated Circuit Systems]

Página de inicio	http://www.icst.com

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ICS181-02

Low EMI Clock Generator

MDS 181-02 A

1

Revision 110404

Integrated Circ uit Systems l5 25 Race Street, San Jo se, CA 9 512 6 l tel (408 ) 29 7-120 1 l

www.ics t.co m

Description

The ICS181-02 generates a low EMI output clock from

a clock or crystal input. The device uses ICS’

proprietary mix of analog and digital Phase-Locked

Loop (PLL) technology to spread the frequency

spectrum of the output, thereby reducing the frequency

amplitude peaks by several dB.

The ICS181-02 offers down spread selection of -1.25%

and -3.75%. Refer to the MK1714-01/02 for the widest

selection of input frequencies and multipliers.

ICS offers a complete line of EMI reducing clock

generators. Consult us when you need to remove

crystals and oscillators from your board.

Features

• Pin and function compatible to Cypress W181-02

• Packaged in 8-pin SOIC

• Provides a spread spectrum output clock

• Accepts a clock input and provides same frequency

dithered output

• Input frequency of 28 to 48 MHz for Clock input

• Peak reduction by 7dB - 14dB typical on 3rd - 19th

odd harmonics

• Spread percentage selection for -1.25% and -3.75%

• Operating voltage of 3.3 V and 5 V

• Advanced, low-power CMOS process

Block Diagram

PLL Clock

Synthesis

and Spread

Spectrum

Circuitry

SS%

CLK

GND

VDD

SSON#

X1/CLKIN

X2

Clock Buffer/

Crystal

Oscillator

FS1

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