MK1725 Просмотр технического описания (PDF) - Integrated Circuit Systems

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MK1725

Quad Output Spread Spectrum Clock Generator

Integrated Circuit Systems 

MK1725

Quad Output Spread Spectrum Clock Generator

Description

The MK1725 generates 4 high-quality, high-frequency

spread spectrum clock outputs. It is designed to

replace spread spectrum clock generators and a buffer

in many digital consumer applications. Using ICS’

patented Phase Locked Loop (PLL) techniques, the

device runs from a lower frequency clock or crystal

input.

The MK1725 has a 16 location ROM table which

provides maximum flexibility for system designers. The

chip also has a power down pin which can be used to

reduce power.

Features

• Packaged in 16-pin TSSOP

• Available in Pb (lead) free package

• Replaces a spread spectrum clock generator and a

buffer

• Input clock or crystal frequency of 20-34 MHz

• Output frequency of 20-136 MHz

• Four spread spectrum clock outputs

• Duty cycle of 45/55

• Operating voltage of 3.3 V

• Advanced, low power CMOS process

Block Diagram

VDD

3

4

S3:0

X1/ICLK

20-34 MHz

crystal or

clock

X2

Optional crystal

capacitors.

Crystal

Oscillator

PLL/Clock

Synthesis

and

Spread

Spectrum

Circuitry

GND 3

PDTS

4

CLK1:4

MDS 1725 C

1

Revision 021605

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

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