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Número de pieza | ICS4231-03 | |
Descripción | Low EMI Clock Generator | |
Fabricantes | ICS | |
Logotipo | ||
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ICS4231-03
Low EMI Clock Generator
Description
The ICS4231-03 generates a low EMI output clock
from a clock or crystal input. 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 ICS4231-03 offers four different center and down
spread selections. Refer to the MK1714-01/02 for the
widest selection of input frequencies and multipliers.
ICS offers a complete line of EMI reducing clock
generators. Consult us when you need to remove
crystals and oscillators from your board.
Features
• Pin and function compatible to Cypress W42C31-03
• Packaged in 8-pin SOIC (Pb free available)
• Provides a spread spectrum output clock
• Accepts a clock or crystal input and provides same
frequency dithered output
• Input clock frequency of 10 to 33 MHz
• Peak reduction by 8dB - 14dB typical on 3rd - 19th
odd harmonics
• Spread percentage selections of ±1.875%, ±1.0%,
and -2.0%
• Operating voltage of 5V
• Advanced, low-power CMOS process
Block Diagram
VDD
FS1:0
OE#
X1/CLKIN
X2
Clock Buffer/
Crystal
Oscillator
PLL Clock
Synthesis
and Spread
Spectrum
Circuitry
CLK
GND
MDS 4231-03 A
1
Revision 110404
Integrated Circuit Systems● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201● www.icst.com
1 page ICS4231-03
LOW EMI CLOCK GENERATOR
Thermal Characteristics
Parameter
Symbol Conditions
Thermal Resistance Junction to
Ambient
θJA Still air
θJA 1 m/s air flow
θJA 3 m/s air flow
Thermal Resistance Junction to Case θJC
Marking Diagram
8
5
Min.
Typ.
150
140
120
40
Max.
Units
°C/W
°C/W
°C/W
°C/W
4231M-03
######
YYWW
14
Marking Diagram (Pb free)
85
4231M03L
######
YYWW
14
Notes:
1. ###### is the lot number.
2. YYWW is the last two digits of the year and week
that the part was assembled.
3. “L” denotes Pb (lead) free package.
4. Bottom marking: country of origin.
MDS 4231-03 A
5
Revision 110404
Integrated Circuit Systems● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201● www.icst.com
5 Page |
Páginas | Total 6 Páginas | |
PDF Descargar | [ Datasheet ICS4231-03.PDF ] |
Número de pieza | Descripción | Fabricantes |
ICS4231-03 | Low EMI Clock Generator | ICS |
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