MK1714-02
Spread Spectrum Multiplier Clock
Description
Features
The MK1714-02 is a low cost, high performance clock
synthesizer with selectable multipliers and percentages
of spread 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 clock
input to produce a spread or dithered output. This
reduces the EMI amplitude peaks at the odd harmonics
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.
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Packaged in 20-pin tiny SSOP
Available in Pb (lead) free package
Operating voltage 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 board testing
Power down pin stops the outputs low
Selectable frequency spread
Spread can be turned on or off
Advanced, low power CMOS process
Duty cycle of 40/60
Industrial temperature range available
Block Diagram
V DD
2
S4:0
5
PD
P LL Clock
M ultiplier and
Spread
S pectrum
Circuitry
Low E M I E nable
Input
Crystal or
Clock
X1
Crystal
O scillator
RE F
X2
4
X SE L
MDS 1714-02 I
Clock O ut
O E (both outputs)
G ND
1
Revision 042805
Integrated Circuit Systems, Inc. ● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201 ● www.icst.com
