鈥?/div>
Spread Spectrum Clock Generator with selectable
multiplier ( 1x, 2x and 4x ).
Output frequency ranges: 24MHz to 240MHz.
Selectable Down Spread Modulation.
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
VDD
S3
v
FOUT
GND
PLL701-13
2
3
4
7
6
5
FIN = 24 ~ 120 Mhz
Note:
v: 30k鈩?Internal Pull down ^: 30k鈩?Internal Pull up.
DESCRIPTION
The PLL701-13 is a Spread Spectrum Clock
Generator designed for the purpose of reducing EMI
in high-speed digital systems. The selectable Down
Spread modulation magnitude (see table below)
permits EMI reduction without over-clocking the
output. 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
FOUT
X1
X1
X1
X1
X2
X2
X2
X2
X2
X2
X4
X4
X1
X1
X1
X1
Spread Spectrum Modulation
Frequency
Magnitude
-1.5%
-2.0%
-2.5%
-3.0%
-0.5%
-1.0%
-1.5%
-2.0%
-2.5%
-3.0%
-0.5%
-1.0%
-0.5%
-1.0%
-1.5%
-2.0%
24 - 60
24 - 60
24 - 60
24 - 60
60
60
60
60
-
-
-
-
120
120
120
120
Fin / 1024
47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991
1
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Rev 08/12/04 Page