鈥?/div>
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.
PIN CONFIGURATION
FIN
S2^
S1^
S0
v
1
8
VD
D
S3
v
FOUT
GND
ABE0111
2
3
4
7
6
5
FIN = 24 ~ 120 Mhz
Note:
v: 30k鈩?Internal Pull down. ^: 30k鈩?Internal Pull up.
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.
OUTPUT CLOCK (FOUT) SELECTION
S3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
S2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
S1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
S0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
FIN Range
(MHz)
24
24
24
24
24
24
24
24
-
-
-
-
-
-
-
-
60
60
60
60
60
60
60
60
Spread Spectrum Modulation
FOUT
X1
X1
X1
X1
X2
X2
X2
X2
X2
X2
X4
X4
X1
X1
X1
X1
Frequency
Magnitude
鹵0.75%
鹵1.00%
鹵1.25%
鹵1.50%
鹵0.25%
鹵0.50%
鹵0.75%
鹵1.00%
鹵1.25%
鹵1.50%
鹵0.25%
鹵0.50%
鹵0.25%
鹵0.50%
鹵0.75%
鹵1.00%
24 - 60
24 - 60
24 - 60
24 - 60
60
60
60
60
-
-
-
-
120
120
120
120
Fin / 1024
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001
www.Abracon.com
03/21/05 Page 1