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PLL701-01 Datasheet(PDF) 1 Page - PhaseLink Corporation

Part No. PLL701-01
Description  Low EMI Spread Spectrum Multiplier Clock
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Maker  PLL [PhaseLink Corporation]
Homepage  http://www.phaselink.com
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PLL701-01 Datasheet(HTML) 1 Page - PhaseLink Corporation

   
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PLL701-01/02/04/06
Low EMI Spread Spectrum Multiplier Clock
47745 Fremont Blvd., Fremont, California 94538 TEL (510) 492-0990 FAX (510) 492-0991 www.phaselink.com Rev 08/30/05 Page 1
FEATURES
• 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.
DESCRIPTION
The PLL701-01/02/04/06 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.
PIN CONFIGURATION
Note:
^: Internal pull-up resistor (120k
Ω for SD, 30 kΩ 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
Ω).
OUTPUT CLOCK (FOUT) SELECTION
SST Modulation
SD
SC2
SC1
SC0
FOUT
(-01)
FOUT
(-02)
FOUT
(-04)
FOUT
(-06)
Magnitude
Freq.
Type
1
0
0
0
X1
X2
X4
X6
0.50%
C
±0.25%
1
0
0
1
X1
X2
X4
X6
C
±0.5%
0
0
0
1
X1
X2
X4
X6
1.00%
D
-1.0%
1
0
1
0
X1
X2
X4
X6
C
±0.75%
0
0
1
0
X1
X2
X4
X6
1.50%
A
+0.25% ~ -1.25%
1
0
1
1
X1
X2
X4
X6
C
±1.0%
0
0
1
1
X1
X2
X4
X6
2.00%
A
+0.5% ~ -1.5%
1
1
0
0
X1
X2
X4
X6
C
±1.25%
0
1
0
0
X1
X2
X4
X6
2.50%
A
+0.75% ~ -1.75%
1
1
0
1
X1
X2
X4
X6
C
±1.5%
0
1
0
1
X1
X2
X4
X6
3.00%
A
+1.0% ~ -2.0%
1
1
1
0
X1
X2
X4
X6
C
±1.75%
0
1
1
0
X1
X2
X4
X6
3.50%
A
+1.25% ~ -2.25%
1
1
1
1
X1
X2
X4
X6
OFF
Fin / 512
Notes: C: Center Spread. A: Asymmetric Spread. D: Down Spread.
1
2
3
45
6
7
8
XIN/FIN
XOUT/SD*^
SC0^
SC1^
VDD
FOUT
GND
SC2^
XIN/FIN = 10 ~ 30 MHz


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