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PDF ( 数据手册 , 数据表 ) MK1709

零件编号 MK1709
描述 Low EMI Clock Generator
制造商 Integrated Circuit Systems
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MK1709 数据手册, 描述, 功能
MK1709
Low EMI Clock Generator
Description
The MK1709 generates a low EMI output clock from a
clock input. The part is designed to dither the LCD
interface clock for flat panel graphics controllers. 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.
The MK1709 offers centered spread from a high speed
clock input. Refer to the MK1714-01/02 for a crystal
input and the widest selection of input frequencies and
multipliers.
ICS offers many other clocks for computers and
computer peripherals. Consult us when you need to
remove crystals and oscillators from your board.
Block Diagram
Features
Packaged in 8-pin SOIC (MK1709S) and in 8-pin
TSSOP (MK1709AG)
8-pin TSSOP available in lead (Pb) free package
Provides a spread spectrum output clock
Supports flat panel controllers
Guaranteed to +85°C operation
Accepts a clock input, provides same frequency
dithered output
Good for all VGA modes from 80 to 167 MHz
Peak reduction by 7dB - 14dB typical on 3rd - 19th
odd harmonics
Low EMI feature can be disabled
Includes power-down
Operating voltage of 3.3 V
Advanced, low-power CMOS process
VDD
S0
S1
S2
Low EMI Enable
ICLK
Input
Buffer
PLL Clock
Synthesis
and Spread
Spectrum
Circuitry
Clock Out
GND
MDS 1709 D
1
Revision 031204
Integrated Circuit Systems, Inc. 525 Race Street, San Jose, CA 95126 tel (408) 297-1201 www.icst.com







MK1709 pdf, 数据表
MK1709
Low EMI Clock Generator
Package Outline and Package Dimensions (8-pin TSSOP, 173 Mil. Body)
Package dimensions are kept current with JEDEC Publication No. 95
8
INDEX
AREA
12
D
A
2
e
b
E1 E
A
A
1
Symbol
A
A1
A2
b
C
D
E
E1
e
L
α
aaa
-C-
SEATING
PLANE
aaa C
Millimeters
Inches
Min Max
-- 1.20
0.05 0.15
0.80 1.05
0.19 0.30
0.09 0.20
3.90 3.10
6.40 BASIC
4.30 4.50
0.65 Basic
0.45 0.75
0° 8°
- 0.10
Min Max
-- 0.047
0.002 0.006
0.032 0.041
0.007 0.012
0.0035 0.008
0.114 0.122
0.252 BASIC
0.169 0.177
0.0256 Basic
0.018 0.030
0° 8°
- 0.004
c
L
MDS 1709 D
8
Revision 031204
Integrated Circuit Systems, Inc. 525 Race Street, San Jose, CA 95126 tel (408) 297-1201 www.icst.com














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