MK1412
MPEG Audio Clock Synthesizer
Description
The MK1412 is the ideal way to generate clocks
for MPEG audio devices in computers. The device
uses ICS/MicroClock’s proprietary mixture of
analog and digital Phase-Locked Loop (PLL)
technology to synthesize one of eight frequencies
(four on each output) from the 14.31818 MHz
reference. In an 8 pin SOIC, the MK1412 can save
component count, board space, and cost over
crystals and oscillators, and increase reliability by
eliminating three expensive mechanical devices
from the board.
We offer many other clocks for computers and
computer peripherals. Consult us when you need
to remove crystals and oscillators from your board.
Due to a long lead time in the original wafer fab
that makes the MK1412S, we have retooled the
die and now call the part the MK1412A. All
functional parameters are the same as or better
than the original part.
Features
• Packaged in 8 pin SOIC
• Input crystal or clock frequency of 14.31818 MHz
• Provides master MPEG clocks for 32 kHz,
44.1 kHz, 48 kHz and 96 kHz sampling rates
• Output clock frequencies of 256x and 512x of the
audio sampling rates compatible with most DACs
• Low jitter
• Full CMOS output swing with 25mA drive
capability at TTL levels
• 3.3V or 5V±10% supply voltage
• Advanced, low power CMOS process
• The A version is the newest version in a more
advanced manufacturing process
Block Diagram
VDD GND
2
S1, S0
Output
Buffer
PLL
Clock Synthesis
and Control
Circuitry
÷2
Output
Buffer
CLK
14.31818 MHz
crystal or clock
X1
Crystal
Oscillator
X2
CLK/2
1
Revision 060200
Printed 11/15/00
Integrated Circuit Systems, Inc.• 525 Race Street• San Jose • CA • 95126• (408)295-9800tel •www.icst.com
MDS 1412 B
ICS [ INTEGRATED CIRCUIT SYSTEMS ]
