ICS7152A datasheet(1/10 Pages) ICST

Il numero della parte	ICS7152A

Spiegazioni elettronici	Spread Spectrum Clock Generator

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Produttore elettronici	ICST [Integrated Circuit Systems]

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ICS7152A

MDS 7152A A

1

Revision 102005

Integrated Circuit Systems, Inc.

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

Spread Spectrum Clock Generator

Description

The ICS7152A-02 and -11 are clock generators for EMI

(Electromagnetic Interference) reduction (see below for

frequency ranges and multiplier ratios). Spectral peaks

are attenuated by modulating the system clock

frequency. Down or center spread profiles are

selectable. Down spread will not exceed the maximum

frequency of an unspread clock, and center spread

does not change the average operating frequency of

the system

ICS offers many other clocks for computers and

computer peripherals. Consult ICS when you need to

remove crystals and oscillators from your board.

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)

• Low cycle-to-cycle jitter - less than 100 ps

• Advanced, low-power CMOS process

• Industrial and commercial temperature ranges

• Available in Pb (lead) free package

• Pin compatible with Fujitsu MB88152-102 and -111

Block Diagram

Product Lineup

Product

Input Frequency Range

Modulation Type

Modulation Enable Pin

ICS7152AM-02, ICS7152AMI-02

40.0 MHz to 134.0 MHz

Down spread

Yes

ICS7152AM-11, ICS7152AMI-11

16.6 MHz to 67.0 MHz

Center spread

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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