ICS18002 datasheet(1/6 Pages) ICST

部件名	ICS18002

功能描述	Low EMI Clock Generator

PDF	6 Pages

Scroll/Zoom	100%

制造商	ICST [Integrated Circuit Systems]

网页	http://www.icst.com

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ICS180-02

Low EMI Clock Generator

MDS 180-02 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 ICS180-02 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 ICS180-02 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 W180-02

• Packaged in 8-pin SOIC

• Provides a spread spectrum output clock

• Accepts a clock input and provides same frequency

dithered output

• Input frequency of 8 to 15 MHz

• 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 C lock

S ynthesis

and S pread

Spectrum

Circuitry

SS%

CLK

GND

VD D

SSO N #

X 1/C LK IN

X2

C lock B uffer/

Crystal

O scillator

FS 1

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