DATASHEET
LOW EMI CLOCK GENERATOR
ICS180-02
Description
Features
The ICS180-02 generates a low EMI output clock from
a clock or crystal input. The device uses ICS’
proprietary mix of analog and digital Phase-Locked
Loop (PLL) technology to spread the frequency
spectrum of the output, thereby reducing the frequency
amplitude peaks by several dB.
• Pin and function compatible to Cypress W180-02
• Packaged in 8-pin SOIC
• Provides a spread spectrum output clock
• Accepts a clock input and provides same frequency
dithered output
• Input frequency of 8 to 15 MHz
The ICS180-02 offers down spread selection of -1.25%
and -3.75%. Refer to the MK1714-01/02 for the widest
selection of input frequencies and multipliers.
• Peak reduction by 7dB - 14dB typical on 3rd - 19th
odd harmonics
• Spread percentage selection for -1.25% and -3.75%
• Operating voltage of 3.3 V and 5 V
ICS offers a complete line of EMI reducing clock
generators. Consult us when you need to remove
crystals and oscillators from your board.
• Advanced, low-power CMOS process
Block Diagram
VDD
FS1
SSON#
PLL Clock
Synthesis
SS%
and Spread
Spectrum
Circuitry
CLK
X1/CLKIN
Clock Buffer/
Crystal
Oscillator
X2
GND
IDT™ / ICS™ LOW EMI CLOCK GENERATOR
1
ICS180-02
REV A 110404
IDT [ INTEGRATED DEVICE TECHNOLOGY ]
