PLL701-17 Datasheet, PDF (1/5 Pages) PhaseLink Corporation – Low EMI Spread Spectrum Multiplier Clock

PLL701-17
Low EMI Spread Spectrum Multiplier Clock
FEATURES
• Spread Spectrum Clock Generator with selectable
multiplier ( 1x, 2x, 2.94x and 4x ).
• Reference input frequency: 16MHz-60MHz.
• Output frequency ranges: 16MHz to 200MHz.
• Center Spread Modulation.
• TTL/CMOS compatible outputs.
• 3.3V Operating Voltage.
• Low short term jitter.
• Available in 8-Pin 150mil SOIC.
DESCRIPTION
The PLL701-17 is a Spread Spectrum Clock
Generator designed for the purpose of reducing EMI
in high-speed digital systems, with selectable Center
Spread modulation magnitude (see table below). The
multiplication factor can be selected from 4 multiplier
modes. The device operates over a wide range of
input frequencies and provides 1x, 2x. 2.94x and 4x
modulated clock outputs.
PIN CONFIGURATION
FIN 1
S2^ 2
S1^ 3
S0^v 4
8 VDD
7 S3^v
6 FOUT
5 GND
FIN = 16 ~ 60 Mhz
Note: v: 30kΩ Internal Pull down. ^: 30kΩ Internal Pull up.
OUTPUT CLOCK (FOUT) SELECTION
S3
S2
S1
S0
FIN Range
(MHz)
0
0
0
0
0
0
0
1
0
0
1
0
0
0
1
1
0
1
0
0
0
1
0
1
0
1
1
0
0
1
1
1
1
0
0
0
1
0
0
1
1
0
1
0
1
0
1
1
1
1
0
0
1
1
0
1
1
1
1
0
1
1
1
1
16 - 40
16 - 40
16 - 40
16 - 40
16 - 40
16 - 40
16 - 40
16 - 40
24 - 60
24 - 60
24 - 50
24 - 50
16 - 40
16 - 40
16 - 40
16 - 40
FOUT
X1
X1
X1
X1
X2
X2
X2
X2
X2
X2
X4
X4
X2.94
X2.94
X2.94
X2.94
Spread Spectrum Modulation
Frequency
Fin / 512
Fin / 1024
Fin / 1000
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%
47745 Fremont Blvd., Fremont, California 94538 Tel [phone] Fax [phone] www.phaselink.com Rev 01/17/06 Page 1