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ICS91718YMLF-T Datasheet

  • ICS91718YMLF-T

  • Low EMI, Spread Modulating, Clock Generator

  • 11頁(yè)

  • ICS

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Integrated
Circuit
Systems, Inc.
ICS91718
Low EMI, Spread Modulating, Clock Generator
Features:
鈥?/div>
ICS91718 is a Spread Spectrum Clock targeted
for Mobile PC and LCD panel applications.
Generates an EMI optimized clock signal (EMI
peak reduction of 7-14 dB on 3rd-19th harmonics)
through use of Spread Spectrum techniques.
鈥?/div>
ICS91718 operates with input frequencies at
14.318 - 80 MHz.
鈥?/div>
Spread modulation frequency range is 20kHz to
40kHz.
鈥?/div>
Spread percentage/type programming through
I
2
C.
Specifications:
鈥?/div>
Supply Voltages: V
DD
= 3.3V 鹵0.3V
鈥?/div>
Cyc to Cyc jitter: <150ps
鈥?/div>
Output duty cycle 45/55%
鈥?/div>
Guarantees +85擄C operational condition
鈥?/div>
8-pin SOIC (150 mil) package
Pin Configuration
CLKIN
VDD
GND
**
CLKOUT/FS_IN0
1
2
3
4
8
7
6
5
PD#
*
SCLK
SDATA
REF_OUT/FS_IN1
**
8-pin SOIC & TSSOP
Notes:
* Internal pull-up resistor
** Internal pull-down resistor
Input Select Functionality
FS_IN1 FS_IN0
0
0
1
1
0
1
0
1
MHz
14.318 in
48.00 out
14.318 in
66.66 out
48.00 in/out
66.66 in/out
48.00 in/out
66.66 in/out
SPREAD %
-1.0% down sprd
-1.0% down sprd
-1.0% down sprd
+/-1.0% center sprd
Block Diagram
REFOUT
CLKIN
PLL1
Spread
Spectrum
Spectrum
CLKOUT
CLKOUT
PD#
FS_IN0:1
SDATA
SD
SCLK
Control
Logic
Config.
Reg.
0500D鈥?7/15/04

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