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ICS91718 Datasheet(PDF) 1 Page - Integrated Circuit Systems

Part # ICS91718
Description  Low EMI, Spread Modulating, Clock Generator
PDF  11 Pages
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Manufacturer  ICST [Integrated Circuit Systems]
Direct Link  http://www.icst.com
Logo ICST - Integrated Circuit Systems

ICS91718 Datasheet(HTML) 1 Page - Integrated Circuit Systems

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Integrated
Circuit
Systems, Inc.
ICS91718
0500D—07/15/04
Block Diagram
Pin Configuration
8-pin SOIC & TSSOP
Features:
•
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.
•
ICS91718 operates with input frequencies at
14.318 - 80 MHz.
•
Spread modulation frequency range is 20kHz to
40kHz.
•
Spread percentage/type programming through
I
2C.
Specifications:
•
Supply Voltages: VDD = 3.3V ±0.3V
•
Cyc to Cyc jitter: <150ps
•
Output duty cycle 45/55%
•
Guarantees +85°C operational condition
•
8-pin SOIC (150 mil) package
Low EMI, Spread Modulating, Clock Generator
Notes:
*
Internal pull-up resistor
** Internal pull-down resistor
Input Select Functionality
CLK
CL
REFOUT
KOUT
OUT
PD#
PD#
CLKIN
CLKIN
PLL1
PLL1
Spread
Spread
Spectr
Spectrum
um
SD
SDATA
SCLK
SCLK
FS_IN0:1
Control
Control
Logic
Logic
Config.
Config.
Reg.
Reg.
CLKIN 18 PD#*
VDD 27 SCLK
GND 36 SDATA
**CLKOUT/FS_IN0 45 REF_OUT/FS_IN1**
FS_IN1 FS_IN0
MHz
SPREAD %
00
14.318 in
48.00 out
-1.0% down sprd
01
14.318 in
66.66 out
-1.0% down sprd
10
48.00 in/out
66.66 in/out
-1.0% down sprd
11
48.00 in/out
66.66 in/out
+/-1.0% center sprd


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