MK1714 Integrated Circuit System, MK1714 Datasheet

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MK1714

Manufacturer Part Number
MK1714
Description
SpreaDSPectrum Multiplier Clock
Manufacturer
Integrated Circuit System
Datasheet

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MDS 1714-01 I
Integrated Circuit Systems, Inc.
Description
The MK1714-01 is a low cost, high performance clock
synthesizer with selectable multipliers and percentages
of spread spectrum 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 places
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.
See the MK1714-02 for other selections on input
ranges and spreads.
Block Diagram
Low EM I Enable
C rystal or
C lock
Input
S4:0
X1
X2
PD
5
525 Race Street, San Jose, CA 95126
O scillator
Crystal
XSEL
1
GN D
Features
VDD
Spread Spectrum Multiplier Clock
Packaged in 20 pin tiny SSOP
Operating voltage of 3.3V or 5V
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
Input frequency of 5 - 140 MHz (depending on mode)
Output frequency of 20 - 150 MHz (depending on
mode)
and Spread
2
4
PLL Clock
Spectrum
M ultiplier
Circuitry
OE (both outputs)
tel (408) 295-9800
MK1714-01
C lock O ut
R EF
www.icst.com
Revision 041003

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MK1714 Summary of contents

Page 1

... Description The MK1714- low cost, high performance clock synthesizer with selectable multipliers and percentages of spread spectrum 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 ...

Page 2

... Alternatively, the PD pin may be set low while changing frequencies. MDS 1714-01 I Integrated Circuit Systems, Inc. REF OE PD GND GND LEE XSEL Pin Description 2 525 Race Street, San Jose, CA 95126 MK1714-01 Spread Spectrum Multiplier Clock Revision 041003 www.icst.com tel (408) 295-9800 ...

Page 3

... Race Street, San Jose, CA 95126 MK1714-01 Spread Spectrum Multiplier Clock Direction Amount (%) C ±1.25 C ±0 ±1 C ±1 C ±0.5 DC +0.25, -1.25 DC +0. ±1 C ±0 ...

Page 4

... An input signal should not be applied to X1 until VDD is stable (within 10% of its final value). This requirement can be easily met by operating the MK1714-01 and the X1 source from the same power supply. This requirement is not applicable if a crystal is used. 2) LEE should not be enabled (taken high) until after the power supplies and input clock are stable ...

Page 5

... Absolute Maximum Ratings Stresses above the ratings listed below can cause permanent damage to the MK1714-01. These ratings, which are standard values for ICS commercially rated parts, are stress ratings only. Functional operation of the device at these or any other conditions above those indicated in the operational sections of the specifications is not implied ...

Page 6

... Race Street, San Jose, CA 95126 MK1714-01 Spread Spectrum Multiplier Clock Min. Typ. Max. Units 10 25 MHz 10 150 MHz 1.5 1.5 40 ±150 200 MHz 1 ppm Min. Typ. Max. Units 135 MK1714-01RLF ####### YYWW 1 10 Revision 041003 www.icst.com tel (408) 295-9800 C/W C/W C/W C/W ...

Page 7

... MK1714-01RI MK1714-01RITR MK1714-01RLF MK1714-01RLFTR While the information presented herein has been checked for both accuracy and reliability, Integrated Circuit Systems (ICS) assumes no responsibility for either its use or for the infringement of any patents or other rights of third parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is intended for use in normal commercial applications ...

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