ICS7152 datasheet(1/9 Pages) ICST

部件名	ICS7152

功能描述	Spread Spectrum Clock Generator

PDF	9 Pages

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制造商	ICST [Integrated Circuit Systems]

网页	http://www.icst.com

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ICS7152

MDS 7152 E

1

Revision 012306

Integrated Circuit Systems, Inc.

● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201 ● www.icst.com

Spread Spectrum Clock Generator

Description

The ICS7152-01, -02, -11, and -12 are clock

generators for EMI (Electro Magnetic Interference)

reduction (see below for frequency ranges and

multiplier ratios). Spectral peaks can be attenuated by

slightly modulating the oscillation frequency. Both down

and center spread profiles are selectable. Center

spread maintains an average frequency equal to an

unspread clock. Down spread meets maximum

frequency specs over the entire modualtion cycle.

Features

• Operating voltage of 3.3 V ±0.3 V

• Packaged in 8-pin SOIC

• Input frequency range of 16.6 to 134.0 MHz

• Output frequency range of 16.6 to 134.0 MHz

• Provides a spread spectrum clock output (±0.5%,

±1.5% center spread; -1.0%, -3.0% down spread)

• Advanced, low-power CMOS process

• Industrial temperature range available

• Available in Pb (lead) free package

Block Diagram

Product Lineup

Product

Input Frequency Range

Modulation Type

Modulation Enable Pin

ICS7152M-01, ICS7152MI-01

16.6 MHz to 67 MHz

Down spread

Yes

ICS7152M-02, ICS7152MI-02

40.0 MHz to 134.0 MHz

ICS7152M-11, ICS7152MI-11

16.6 MHz to 67.0 MHz

Center spread

ICS7152M-12, ICS7152MI-12

40.0 MHz to 134.0 MHz

PLL Clock

Synthesis

and Spread

Spectrum

Circuitry

SEL

FREQ

CKOUT

GND

VDD

Clock Buffer/

Crystal

Ocsillator

XIN

XOUT

External caps required with crystal for

accurate tuning of the clock

XENS

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