MK2731-03C

MPEG Audio Clock Synthesizer

MDS 2731-03C D

1

Revision 011101

Integrated Circuit Systems, Inc.• 525 Race Street, San Jose, CA, 95126 • (408) 295-9800 tel • www.icst.com

Block Diagram

Description

Features

The MK2731-03 is a low cost, low jitter, high

performance PLL clock synthesizer designed to

replace oscillators and PLL circuits in set-top box

and multimedia systems. Using our proprietary

analog Phase-Locked Loop (PLL) techniques, the

device uses an inexpensive crystal or clock input to

produce up to three output clocks. All of the audio

frequencies are synthesized exactly, with zero ppm

error, and locked to the 27 MHz clock.

MicroClock manufactures the largest variety of

Set-Top Box and multimedia clock synthesizers

for all applications. Consult MicroClock to

eliminate VCXOs, crystals and oscillators from

your board.

• Packaged in 16 pin narrow SOIC

• Produces exact audio clocks from the video

• Uses a crystal or clock input

• Zero ppm synthesis error in all clocks

• All frequencies are frequency locked

• 25mA output drive capability at TTL levels

• Advanced, low power, sub-micron CMOS process

• 3.3V or 5V operating voltage

Crystal

Oscillator

PLL/Clock

Synthesis

Circuitry

27 MHz crystal

or clock

Output

Buffer

CLK2

S2:0

3

Output

Buffer

CLK1

Output

Buffer

REF

X2

X1

(Capacitors are required

for crystal tuning)