MK2712
NTSC/PAL Clock Source
Description
The MK2712 is the ideal way to generate clocks for
NTSC/PAL video encoders and decoders. Stored in
the device are two sets of popular frequencies for
NTSC and PAL. In an 8 pin SOIC, the chip can save
component count, board space, and cost over surface
mount crystals and oscillators, and increase reliability
by eliminating one or two mechanical devices from the
board. The power down pin turns off the device,
drawing less than 20µA.
ICS/MicroClock offers many other clocks for computers
and computer peripherals. Consult us when you need
to remove crystals and oscillators from your board.
Features
• Packaged in 8 pin SOIC
• Ideal for chips such as Analog Devices AD722
and Brooktree BT819
• Input clock frequency of 27.0000 MHz
• Power down turns off chip
• Output enable tri-states output for system testing
• Frequencies are within 1 ppm with accurate
input clock
• Low jitter
• Output clock frequencies of 14.31818MHz,
17.7345MHz, 28.6364MHz, or 35.46896MHz
• 25mA drive capability at TTL levels
• 3.3V or 5V supply voltage
• Advanced, low power CMOS process
• Insensitive to input clock duty cycle
Block Diagram
VDD
GND
FS0, 1
PD
27.00 MHz
clock input
2
PLL
Clock Synthesis
Circuitry
Output
Buffer
NTSC/PALCL
OCK
OE
MDS 2712 C
1
Revision 061401
Integrated Circuit Systems • 525 Race Street • San Jose • CA • 95126 • (408)295-9800tel • www.icst.com
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