鈥?/div>
Spread Spectrum Clock Generator with selectable
multiplier from 1x to 6x outputs.
Output frequency ranges: 10MHz to 180MHz.
Accepts input from crystal or reference clock.
Selectable Center, Down or Asymmetric Spread
Modulation.
Selectable Modulation rate.
TTL/CMOS compatible outputs.
3.3V Operating Voltage.
Low short term jitter.
Available in 8-Pin 150mil SOIC.
PIN CONFIGURATION
XIN/FIN
XOUT/SD*^
SC0^
SC1^
1
8
VDD
SC2^
FOUT
GND
ABE010x
2
3
4
7
6
5
XIN/FIN = 10 ~ 30 MHz
Note:
^: Internal pull-up resistor (120k鈩?for SD, 30 k鈩?for
SC0-SC2).
*: The value of SD is latched upon power-up. The
internal pull-up resistor results in a default high value
when no pull-down resistor is connected to this pin
(recommended external pull-down resistor of 27 k鈩?.
DESCRIPTION
The ABE0101/02/04/06 are Spread Spectrum Clock
Generators designed for the purpose of reducing EMI
in high-speed digital systems. Any output frequency
from 10 to 180MHz can be selected by programming
6 multiplier modes. The device is designed to operate
from a crystal or reference clock input and provides
1x to 6x modulated clock outputs.
OUTPUT CLOCK (FOUT) SELECTION
SD
1
1
0
1
0
1
0
1
0
1
0
1
0
1
SC2
0
0
0
0
0
0
0
1
1
1
1
1
1
1
SC1
0
0
0
1
1
1
1
0
0
0
0
1
1
1
SC0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
FOUT
(01)
X1
X1
X1
X1
X1
X1
X1
X1
X1
X1
X1
X1
X1
X1
FOUT
(02)
X2
X2
X2
X2
X2
X2
X2
X2
X2
X2
X2
X2
X2
X2
FOUT
(04)
X4
X4
X4
X4
X4
X4
X4
X4
X4
X4
X4
X4
X4
X4
FOUT
(06)
X6
X6
X6
X6
X6
X6
X6
X6
X6
X6
X6
X6
X6
X6
SST Modulation
Magnitude
0.50%
1.00%
1.50%
2.00%
Fin / 512
2.50%
3.00%
3.50%
OFF
Freq.
C
C
D
C
A
C
A
C
A
C
A
C
A
Type
鹵0.25%
鹵0.5%
-1.0%
鹵0.75%
+0.25% ~ -1.25%
鹵1.0%
+0.5% ~ -1.5%
鹵1.25%
+0.75% ~ -1.75%
鹵1.5%
+1.0% ~ -2.0%
鹵1.75%
+1.25% ~ -2.25%
Notes:
C: Center Spread. A: Asymmetric Spread. D: Down Spread.
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001
www.Abracon.com
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