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Teilenummer | ABE0111 |
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Beschreibung | Low EMI Spread Spectrum Multiplier Clock | |
Hersteller | Abracon Corporation | |
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Gesamt 5 Seiten www.DataSheet4U.com
ABE0111
Low EMI Spread Spectrum Multiplier Clock
FEATURES
• Spread Spectrum Clock Generator with selectable
multiplier ( 1x, 2x and 4x ).
• Output frequency ranges: 24MHz to 240MHz.
• Selectable center spread modulation rate.
• TTL/CMOS compatible outputs.
• 3.3V Operating Voltage.
• Low short term jitter.
• Available in 8-Pin 150mil SOIC.
DESCRIPTION
The ABE0111 is a Spread Spectrum Clock Generator
designed for the purpose of reducing EMI in high-
speed digital systems, with the selectable Center
Spread modulation amplitude (see table below). The
output frequency is selected by programming 4
multiplier modes. The device operates over a very
wide range of input frequencies and provides 1x to 4x
modulated clock outputs.
PIN CONFIGURATION
FIN 1
S2^ 2
S1^ 3
S0v 4
8
VD
D
7 S3v
6 FOUT
5 GND
FIN = 24 ~ 120 Mhz
Note: v: 30kΩ Internal Pull down. ^: 30kΩ Internal Pull up.
OUTPUT CLOCK (FOUT) SELECTION
S3
S2
S1
S0
FIN Range
(MHz)
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
24 - 60
24 - 60
24 - 60
24 - 60
24 - 60
24 - 60
24 - 60
24 - 60
24 - 60
24 - 60
24 - 60
24 - 60
60 - 120
60 - 120
60 - 120
60 - 120
FOUT
X1
X1
X1
X1
X2
X2
X2
X2
X2
X2
X4
X4
X1
X1
X1
X1
Spread Spectrum Modulation
Frequency
Fin / 1024
Magnitude
±0.75%
±1.00%
±1.25%
±1.50%
±0.25%
±0.50%
±0.75%
±1.00%
±1.25%
±1.50%
±0.25%
±0.50%
±0.25%
±0.50%
±0.75%
±1.00%
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 03/21/05 Page 1
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Seiten | Gesamt 5 Seiten | |
PDF Download | [ ABE0111 Schematic.PDF ] |
Teilenummer | Beschreibung | Hersteller |
ABE0111 | Low EMI Spread Spectrum Multiplier Clock | Abracon Corporation |
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