I C R O
C
LOC K
Description
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.
MK2703
PLL Audio Clock Synthesizer
Features
• 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
Block Diagram
VDD GND
2
S1:0
PLL
Clock Synthesis
and Control
Circuitry
Output
Buffer
Audio Clock
27 MHz crystal or
clock
X1
Crystal
Oscillator
X2
Output
Buffer
27.000 MHz
(Capacitors are required
for crystal tuning)
1
Revision 062700
Printed 11/16/00
Integrated Circuit Systems, Inc. • 525 Race Street • San Jose •CA•95126• (408) 295-9800tel • www.icst.com
MDS 2703 C
ICS [ INTEGRATED CIRCUIT SYSTEMS ]
