PLL701-11
Low EMI Spread Spectrum Multiplier Clock
FEATURES
•
•
•
•
•
•
•
•
Spread Spectrum Clock Generator with selectable
multiplier ( 1x, 2x and 4x ).
Reference input frequency: 24MHz-120MHz.
Output frequency range: 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 package.
PIN CONFIGURATION
FIN
S2^
S1^
S0
v
1
8
VDD
S3
v
FOUT
GND
PLL701-11
2
3
4
7
6
5
FIN = 24 ~ 120 Mhz
Note:
v: 30kΩ Internal Pull down. ^: 30kΩ Internal Pull up.
DESCRIPTION
The PLL701-11 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
±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%
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
www.phaselink.com
Rev 01/17/06 Page 1
PLL [ PHASELINK CORPORATION ]
