MK2703

PLL Audio Clock Synthesizer

MDS 2703 C

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Revision 062700

Printed 11/16/00

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

I C R O

Block Diagram

Description

Features

The MK2703 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 patented

analog Phase-Locked Loop (PLL) techniques, the

device uses a 27 MHz crystal or clock input to

produce a buffered reference clock and a selectable

audio 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 8 pin SOIC

• Uses an inexpensive fundamental crystal, or clock

• Supports MPEG sampling rates of 32 kHz,

44.1 kHz, 48 kHz and 96 kHz

• Patented zero ppm synthesis error in all clocks

• All frequencies are frequency locked

• 25 mA output drive capability at TTL levels

• Advanced, low power, sub-micron CMOS process

• 3.3 V or 5 V operating voltage

• For audio clocks that require lower jitter, use the

MK2731-03C

• Industrial temperature version available

27 MHz crystal or

clock

X2

X1

(Capacitors are required

for crystal tuning)

Crystal

Oscillator

VDD GND

PLL

Clock Synthesis

and Control

Circuitry

Output

Buffer

Audio Clock

Output

Buffer

27.000 MHz

S1:0

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