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MK1714-02R Schematic ( PDF Datasheet ) - Integrated Circuit Systems

Teilenummer MK1714-02R
Beschreibung Spread Spectrum Multiplier Clock
Hersteller Integrated Circuit Systems
Logo Integrated Circuit Systems Logo 




Gesamt 5 Seiten
MK1714-02R Datasheet, Funktion
MK1714-02
Spread Spectrum Multiplier Clock
Description
The MK1714-02 is a low cost, high performance
clock synthesizer with selectable multipliers and
spread amounts (percentages), designed to
generate high frequency clocks with low EMI.
Using analog/digital Phase-Locked Loop (PLL)
techniques, the device accepts an inexpensive,
fundamental mode, parallel resonant crystal, or a
clock input to produce a spread, or dithered,
output, thereby reducing the frequency amplitude
peaks by several dB. The OE pin puts both outputs
into a high impedance state for board level testing.
The PD# pin powers down the entire chip, and the
outputs are held low.
Features
• Packaged in 20 pin tiny SSOP (QSOP)
• Operating VDD of 3.3 V or 5 V
• Multiplier modes of x1, x2, x3, x4, x5, and x6
• Inexpensive 10-25 MHz crystal, or clock input
• OE pin tri-states the outputs for testing
• Power down pin stops the outputs low
• Selectable frequency spread
• Spread can be turned on or off
• Duty cycle of 40/60
• Advanced, low power CMOS process
• Industrial temperature range available
Block Diagram
VDD GND
S4:0
PD
Low EMI
Enable
Input crystal
or clock
X1
X2
5
Crystal
Oscillator
PLL Clock
Multiplier and
Spread
Spectrum
Circuitry
Output
Buffer
Output
Buffer
Clock Out
REF
XSEL
OE (both outputs)
MDS 1714-02 C
1
Revision 120400
Integrated Circuit Systems, Inc. • 525 Race Street • San Jose •CA•95126• (408) 295-9800tel • www.icst.com





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