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ABE0121 Datasheet(PDF) 1 Page - Abracon Corporation

Part No. ABE0121
Description  Low EMI Spread Spectrum Multiplier Clock
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Maker  ABRACON [Abracon Corporation]
Homepage  http://www.abracon.com/index.htm
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ABE0121 Datasheet(HTML) 1 Page - Abracon Corporation

   
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ABE0121
Low EMI Spread Spectrum Multiplier Clock
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 03/21/05 Page 1
FEATURES
• Spread Spectrum Clock Generator with selectable
SST mode.
• Output frequency ranges: 24MHz to 200MHz.
• Selectable Center Spread Modulation.
• TTL/CMOS compatible outputs.
• 3.3V Operating Voltage.
• Low short-term jitter.
• Available in 8-Pin 150mil SOIC.
DESCRIPTION
The ABE0121 is a Spread Spectrum Clock Generator
designed for the purpose of reducing EMI in high-
speed digital systems, with selectable Center Spread
modulation magnitude (see table below). The device
operates over a very wide range of input frequencies
and provides a 1x modulated clock output.
PIN CONFIGURATION
Note: v: 30k
Ω Internal Pull down. ^: 30kΩ Internal Pull up.
SST BY-PASS SELECTOR
S3
Spread Spectrum Mode
0
OFF
1
ON (See below) Default
Note: S3 has an internal Pull Up. Default=”1”
MODULATION MAGNITUDE SELECTION
Spread Spectrum Modulation
S2
S1
S0
FIN Range
(MHz)
FOUT
Frequency
Magnitude
0
0
0
24 - 200
X1
±0.75%
0
0
1
24 - 200
X1
±1.00%
0
1
0
24 - 200
X1
±1.25%
0
1
1
24 - 200
X1
±0.125%
1
0
0
24 - 200
X1
±0.25%
1
0
1
24 - 200
X1
±0.50%
1
1
0
24 - 200
X1
±0.375%
1
1
1
24 - 200
X1
Fin / 1024
±0.625%
1
2
3
45
6
7
8
FIN
S2^
S1^
S0v
VDD
FOUT
GND
S3^
FIN = 24 ~ 200 Mhz


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