ICS7152
Spread Spectrum Clock Generator
Description
Features
The ICS7152-01, -02, -11, and -12 are clock
• Operating voltage of 3.3 V 0.3 V
• Packaged in 8-pin SOIC
generators for EMI (Electro Magnetic Interference)
reduction (see below for frequency ranges and
multiplier ratios). Spectral peaks can be attenuated by
slightly modulating the oscillation frequency. Both down
and center spread profiles are selectable. Center
spread maintains an average frequency equal to an
unspread clock. Down spread meets maximum
frequency specs over the entire modualtion cycle.
• Input frequency range of 16.6 to 134.0 MHz
• Output frequency range of 16.6 to 134.0 MHz
• Provides a spread spectrum clock output ( 0.5%,
1.5% center spread; -1.0%, -3.0% down spread)
• Advanced, low-power CMOS process
• Industrial temperature range available
• Available in Pb (lead) free package
Block Diagram
VDD
SEL
PLL Clock
Synthesis
and Spread
Spectrum
Circuitry
FREQ
XENS
CKOUT
XIN
Clock Buffer/
Crystal
Ocsillator
XOUT
External caps required with crystal for
accurate tuning of the clock
GND
Product Lineup
Product
Input Frequency Range
16.6 MHz to 67 MHz
Modulation Type
Modulation Enable Pin
ICS7152M-01, ICS7152MI-01
ICS7152M-02, ICS7152MI-02
ICS7152M-11, ICS7152MI-11
ICS7152M-12, ICS7152MI-12
Down spread
Center spread
40.0 MHz to 134.0 MHz
16.6 MHz to 67.0 MHz
40.0 MHz to 134.0 MHz
Yes
MDS 7152 E
1
Revision 012306
Integrated Circuit Systems, Inc. ● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201 ● www.icst.com
ICSI [ INTEGRATED CIRCUIT SOLUTION INC ]
