PLL701-17
Low EMI Spread Spectrum Multiplier Clock
47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991
www.phaselink.com
Rev 01/17/06 Page 1
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
Note: v: 30k
Internal Pull down. ^: 30k Internal Pull up.
OUTPUT CLOCK (FOUT) SELECTION
Spread Spectrum Modulation
S3 S2 S1 S0 FIN Range
(MHz)
FOUT
Frequency Magnitude
0 0 0 0 16
-
40
X1
0.75%
0 0 0 1 16
-
40
X1
1.00%
0 0 1 0 16
-
40
X1
1.25%
0 0 1 1 16
-
40
X1
1.50%
0 1 0 0 16
-
40
X2
0.25%
0 1 0 1 16
-
40
X2
0.50%
0 1 1 0 16
-
40
X2
0.75%
0 1 1 1 16
-
40
X2
Fin / 512
1.00%
1 0 0 0 24
-
60
X2
1.25%
1 0 0 1 24
-
60
X2
1.50%
1 0 1 0 24
-
50
X4
0.25%
1 0 1 1 24
-
50
X4
Fin / 1024
0.50%
1 1 0 0 16
-
40
X2.94
0.25%
1 1 0 1 16
-
40
X2.94
0.50%
1 1 1 0 16
-
40
X2.94
0.75%
1 1 1 1 16
-
40
X2.94
Fin / 1000
1.00%
PLL7
01-17
1
2
3
4
5
6
7
8
FIN
S2^
S1^
S0
v
VDD
FOUT
GND
S3
v
FIN = 16 ~ 60 Mhz
PLL701-17
Low EMI Spread Spectrum Multiplier Clock
47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991
www.phaselink.com
Rev 01/17/06 Page 2
BLOCK DIAGRAM
PIN DESCRIPTIONS
Name Number
Type
Description
FIN
1
I
Input Clock connection. 16MHz to 60MHz.
S2 2
I
Digital control input to select multiplication factor and SST modulation
amplitude. Has internal pull-up.
S1 3
I
Digital control input to select multiplication factor and SST modulation
amplitude. Has internal pull-up.
S0 4
I
Digital control input to select multiplication factor and SST modulation
amplitude. Has internal pull-down.
GND 5 P
Ground
connection.
FOUT 6 O
SST Modulated Clock Output. The frequency before modulation is synthesized
by multiplying the input frequency by 1X, 2X, 2.94Xor 4X, depending on S(0:3).
S3 7
I
Digital control input to select multiplication factor and SST modulation
amplitude. Has internal pull-down.
VDD
8
P
3.3V Power Supply connection.
ELECTRICAL SPECIFICATIONS
1. Absolute Maximum Ratings
PARAMETERS SYMBOL
MIN.
MAX.
UNITS
Supply Voltage
V
DD
4.6 V
Input Voltage, dc
V
I
-0.5
V
DD
+0.5 V
Output Voltage, dc
V
O
-0.5
V
DD
+0.5 V
Storage Temperature
T
S
-65 150
C
Ambient Operating Temperature*
T
A
-40 85
C
Junction Temperature
T
J
125
C
Lead Temperature (soldering, 10s)
260
C
ESD Protection, Human Body Model
2
kV
Exposure of the device under conditions beyond the limits specified by Maximum Ratings for extended periods may cause permanent damage to the
device and affect product reliability. These conditions represent a stress rating only, and functional operations of the device at these or any other
conditions above the operational limits noted in this specification is not implied.
* Note: Operating Temperature is guaranteed by design for all parts (COMMERCIAL and INDUSTRIAL), but tested for COMMERCIAL grade only.
FOUT
FIN
S(0:3)
PLL
SST
Control
Logic
PLL701-17
Low EMI Spread Spectrum Multiplier Clock
47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991
www.phaselink.com
Rev 01/17/06 Page 3
2. DC/AC Specifications
PARAMETERS SYMBOL
CONDITIONS MIN.
TYP.
MAX.
UNITS
Supply Voltage
V
DD
2.97 3.63
V
Supply Current
I
DD
15pF
Load,
FOUT=16MHz
9
mA
5pF Load, FOUT=200MHz
25
mA
Input High Voltage
V
IH
0.7*
V
DD
V
Input Low Voltage
V
IL
0.3*
V
DD
V
Input High Current
I
IH
100
A
Input Low Current
I
IL
100
A
Output High Voltage
V
OH
I
OH
=5mA, V
DD
=3.3V
2.4
Output Low Voltage
V
OL
I
OL
=6mA, V
DD
=3.3V
0.4
S3=0
or
S3-S2=1-1 16 40
MHz
S3-S2-S1=1-0-1 24 50
MHz
Input Frequency
F
IN
S3-S2-S1=1-0-0 24 60
MHz
Recovery from interruption of F
IN
1
ms
Input Capacitance
C
in1
3 pF
Pull-up Resistor
R
pu
PIN 2, 3
30
k
Pull-down Resistor
R
pd
PIN 4, 7
30
k
Short Circuit Current
I
sc
50 mA
No Load, FOUT=16MHz
7
mA
3.3V Dynamic Supply Current
I
DD
No Load, FOUT=200MHz
21
mA
3. TIMING CHARACTERISTICS
PARAMETERS
SYMBOL CONDITIONS MIN.
TYP.
MAX.
UNITS
10%~90%VDD, 15pF Load, FOUT100MHz 2 3 ns
10%~90%VDD, 10pF Load, FOUT150MHz 1.5 2 ns
Rise Time
T
r
10%~90%VDD, 5pF Load, FOUT200MHz 1 1.5 ns
90%~10%VDD, 15pF Load, FOUT100MHz 2 3 ns
90%~10%VDD, 10pF Load, FOUT150MHz 1.5 2 ns
Fall Time
T
f
90%~10%VDD, 5pF Load, FOUT200MHz 1 1.5 ns
Output Duty Cycle
D
T
Measured at 50%VDD
45
50
55
%
Cycle to Cycle Jitter
T
cyc-cyc
Over output frequency range @ 3.3V
100
ps peak
PLL701-17
Low EMI Spread Spectrum Multiplier Clock
47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991
www.phaselink.com
Rev 01/17/06 Page 4
FUNCTIONAL DESCRIPTION
Selectable spread spectrum and modulation frequency and magnitude
The PLL701-17 provides selectable spread spectrum modulation frequency, as well as selectable modulation
magnitude. Selection is made by connecting pins 2 (S2), 3 (S1), 4 (S0), and 7 (S3) to a logical "zero" or "one",
according to the output clock selection table on (page 1).
Default values for S(0:3) through internal pull-up and pull-down resistor
Selection pins 4 and 7 (S0 and S3) have an internal pull-down resistor of 30k
while pins 2 and 3 (S1 and S2)
have an internal pull-up resistor of 30k
. This internal pull-down (or pull-up) resistor will pull the input value to a
logical "zero" (or "one" respectively) by default, i.e. when no connection is made between the pin and VDD (GND
respectively). In order to override the internal pull-down (pull-up), the pin has to be connected to VDD (GND
respectively).
PLL701-17
Low EMI Spread Spectrum Multiplier Clock
47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991
www.phaselink.com
Rev 01/17/06 Page 5
PACKAGE INFORMATION
ORDERING INFORMATION
PhaseLink Corporation, reserves the right to make changes in its products or specifications, or both at any time without notice. The information
furnished by Phaselink is believed to be accurate and reliable. However, PhaseLink makes no guarantee or warranty concerning the accuracy of said
information and shall not be responsible for any loss or damage of whatever nature resulting from the use of, or reliance upon this product.
LIFE SUPPORT POLICY: PhaseLink's products are not authorized for use as critical components in life support devices or systems without the
express written approval of the President of PhaseLink Corporation.
For part ordering, please contact our Sales Department:
47745 Fremont Blvd., Fremont, CA 94538, USA
Tel: (510) 492-0990 Fax: (510) 492-0991
PART NUMBER
The order number for this device is a combination of the following:
Device number, Package type and Operating temperature range
PLL701-17 X X X-R
Order Number
Marking
Package Option
PLL701-17SC P701-17SC
SOIC-Tube
PLL701-17SC-R P701-17SC
SOIC-Tape
and
Reel
PLL701-17SCL P701-17SCL
SOIC-Tube
(GREEN)
PLL701-17SCL-R
P701-17SCL
SOIC-Tape and Reel (GREEN)
C
L
A
8 PIN Narrow SOIC ( mm )
SOIC
Symbol
Min.
Max.
A
1.47
1.73
A1
0.10
0.25
B
0.33
0.51
C
0.19
0.25
D
4.80
4.95
E
3.80
4.00
H
5.80
6.20
L
0.38
1.27
e
1.27 BSC
E
H
D
A1
e
B
PART NUMBER
TEMPERATURE
C=COMMERCIAL
I=INDUSTRIAL
PACKAGE TYPE
S=SOIC
NONE= NORMAL PACKAGE
L= GREEN PACKAGE
NONE= TUBE
R= TAPE AND REEL
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