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P701-21SC

Description
Low EMI Spread Spectrum Multiplier Clock
File Size189KB,4 Pages
ManufacturerPLL (PhaseLink Corporation)
Download Datasheet View All

P701-21SC Overview

Low EMI Spread Spectrum Multiplier Clock

Preliminary
PLL701-21
Low EMI Spread Spectrum Multiplier Clock
FEATURES
Spread Spectrum Clock Generator with selectable
SST mode.
Output frequency ranges: 24MHz to 200MHz.
Selectable Center 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^
FOUT
GND
PLL701-21
2
3
4
7
6
5
FIN = 24 ~ 200 Mhz
Note:
v: 30kΩ Internal Pull down. ^: 30kΩ Internal Pull up.
DESCRIPTION
The PLL701-21 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
device operates over a very wide range of input
frequencies and provides a 1x modulated clock
output.
SST BY-PASS SELECTOR
S3
0
1
Spread Spectrum Mode
OFF
ON (See below) Default
Note:
S3 has an internal Pull Up. Default=”1”
MODULATION MAGNITUDE SELECTION
S2
0
0
0
0
1
1
1
1
S1
0
0
1
1
0
0
1
1
S0
0
1
0
1
0
1
0
1
FIN Range
(MHz)
24
24
24
24
24
24
24
24
-
-
-
-
-
-
-
-
200
200
200
200
200
200
200
200
Spread Spectrum Modulation
FOUT
X1
X1
X1
X1
X1
X1
X1
X1
Frequency
Magnitude
±0.75%
±1.00%
±1.25%
±0.125%
±0.25%
±0.50%
±0.375%
±0.625%
Fin / 1024
47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991
www.phaselink.com
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