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Integrated Device Technology Electronic Components Datasheet

ICS7152 Datasheet

SPREAD SPECTRUM CLOCK GENERATOR

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SPREAD SPECTRUM CLOCK GENERATOR
DATASHEET
ICS7152
Description
The ICS7152-01, -02, -11, and -12 are clock 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.
Features
Operating voltage of 3.3 V ±0.3 V
Packaged in 8-pin SOIC
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
Pb (lead) free package, RoHS compliant
Block Diagram
VDD
SEL
FREQ
XENS
XIN
XOUT
Clock Buffer/
Crystal
Ocsillator
PLL Clock
Synthesis
and Spread
Spectrum
Circuitry
CKOUT
External caps required with crystal for
accurate tuning of the clock
GND
Product Lineup
Product
ICS7152M-01, ICS7152MI-01
ICS7152M-02, ICS7152MI-02
ICS7152M-11, ICS7152MI-11
ICS7152M-12, ICS7152MI-12
Input Frequency Range
16.6 MHz to 67 MHz
40.0 MHz to 134.0 MHz
16.6 MHz to 67.0 MHz
40.0 MHz to 134.0 MHz
Modulation Type Modulation Enable Pin
Down spread
Center spread
Yes
IDT® SPREAD SPECTRUM CLOCK GENERATOR
1
ICS7152
REV K 062911


Integrated Device Technology Electronic Components Datasheet

ICS7152 Datasheet

SPREAD SPECTRUM CLOCK GENERATOR

No Preview Available !

ICS7152
SPREAD SPECTRUM CLOCK GENERATOR
SSCG
Pin Assignment
SEL Modulation Rate Setting Table
XIN
XOUT
GND
SEL
18
27
36
45
8 pin (150 mil) SOIC
XENS
FREQ
VDD
CKOUT
Modulation Enable Setting Table
XENS
Pin 8
0
1
Spread Spectrum
ON
OFF
Pin Descriptions
SEL
Pin 4
(note1)
Spread
Direction
Spread
Percentage (%)
Part Number
0 Center
Down
1 Center
Down
±0.5 ICS7152M-11,
ICS7152M-12
-1.0 ICS7152M-01,
ICS7152M-02
±1.5 ICS7152M-11,
ICS7152M-12
-3.0 ICS7152M-01,
ICS7152M-02
Frequency Setting Table
FREQ
Pin 7
0
1
Frequency
16.6 to 40 MHz
40 to 80 MHz
33 to 67 MHz
66 to 134 MHz
ICS7152M-01,
ICS7152M-11
ICS7152M-02,
ICS7152M-12
ICS7152M-01,
ICS7152M-11
ICS7152M-02,
ICS7152M-12
Pin
Number
1
2
3
4
5
6
7
8
Pin
Name
XIN
XOUT
GND
SEL
CKOUT
VDD
FREQ
XENS
Pin Type
Pin Description
Input Crystal resonator connection pin/clock input pin.
Output Crystal resonator connection pin.
Power Connect to ground.
Input Modulation rate setting pin.
Output Modulated clock output pin.
Power Connect to +3.3 V.
Input Frequency setting pin.
Input Modulation enable setting pin.
IDT® SPREAD SPECTRUM CLOCK GENERATOR
2
ICS7152
REV K 062911


Part Number ICS7152
Description SPREAD SPECTRUM CLOCK GENERATOR
Maker IDT
Total Page 10 Pages
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