PLL701-14
Low EMI Spread Spectrum 6x Multiplier Clock
47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991
www.phaselink.com
Rev 08/12/04 Page 1
FEATURES
Spread Spectrum Clock Generator with integrated
6x frequency multiplier.
Input frequency range: 10MHz to 30MHz
Output frequency range: 60MHz to 180MHz.
Accepts input from external clocks or crystal.
Selectable Center Spread SST modulation
amplitude.
Output Enable feature (OE).
TTL/CMOS compatible outputs.
3.3V Operating Voltage.
Low short term jitter.
Available in 8-Pin 150mil SOIC.
DESCRIPTION
The PLL701-14 is a Spread Spectrum Clock
Generator designed to reduce EMI in high-speed
digital systems. Its spread spectrum modulation
amplitude is selectable via the input selector pins.
The chip multiplies any input from 10MHz to 30MHz
by 6x. The chip provides an output Enable/Disable
input permitting the user to tri-state the output.
PIN CONFIGURATION
Note: ^: Internal pull-up resistor (30 k
).
SPREAD SPECTRUM SELECTION
SST Modulation
SC1
SC0
FOUT
Magnitude Frequency
Type
0 0 X6
0.250%
0.125%
0 1 X6
0.500%
0.25%
1 0 X6
0.750%
0.375%
1 1 X6
n/a
Fin / 512
SST turned off
PLL701-14
1
2
3
4
5
6
7
8
XIN/FIN
XOUT
SC0^
SC1^
VDD
FOUT
GND
OE^
XIN/FIN = 10 ~ 30 MHz
PLL701-14
Low EMI Spread Spectrum 6x Multiplier Clock
47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991
www.phaselink.com
Rev 08/12/04 Page 2
BLOCK DIAGRAM
PIN DESCRIPTION
Name Number
Type
Description
XIN/FIN 1 I
Crystal input to be connected to fundamental parallel mode crystal.(C
L
=18pF) or
clock input.
XOUT 2 O
Crystal
output.
SC0 3 I
Digital control input to select modulation rate. 30k
internal pull-up.
SC1 4 I
Digital control input to select modulation rate. 30k
internal pull-up.
GND 5 P
Ground
connection.
FOUT
6
O
Modulated Clock Frequency Output (FOUT = 6 x FIN).
OE 7 I
Output Enable. When low, Tri-states the outputs. 30k
internal pull-up.
VDD
8
P
3.3V Power Supply connection.
FUNCTIONAL DESCRIPTION
Selectable spread spectrum and modulation rates
The PLL701-14 provides center spread modulation as well as selectable modulation rate. Selection is made by
connecting pins 3 (SC0) and 4 (SC1) to a logical "zero" or "one", according to the Spread Spectrum Selection
table on page 1.
Connecting a selection pin to a logical "one"
All selection pins have an internal pull-up resistor (30k
). This internal pull-up resistor will pull the input value to
a logical "one" by default, i.e. when no connection is made to GND. No external pull-up resistor is therefore
required for connecting a logical "one" upon power-up.
Connecting a selection pin to a logical "zero"
Pins 3 (SC0), 4 (SC1), and 7 (OE) simply need to be grounded to pull the input down to a logical "zero".
XTAL
OSC
FOUT
XIN/FIN
XOUT
PLL
SST
Control
Logic
OE
SC(0:1)
PLL701-14
Low EMI Spread Spectrum 6x Multiplier Clock
47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991
www.phaselink.com
Rev 08/12/04 Page 3
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.
2. DC/AC Specifications
PARAMETERS SYMBOL CONDITIONS MIN.
TYP.
MAX.
UNITS
Supply Voltage
V
DD
2.97 3.63 V
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
V
Output Low Voltage
V
OL
I
OL
=6mA, V
DD
=3.3V
0.4
V
F
XIN
When using a crystal
10
30
MHz
Input Frequency
F
IN
When using reference clock
10
30
MHz
Maximum interruption of F
IN
When using reference clock
100
s
Load Capacitance
C
L
Between XIN and XOUT*
18 pF
Short Circuit Current
I
sc
50 mA
3.3V Dynamic Supply Current
I
CC
No
Load
20 mA
*Note: Pin XIN and XOUT each has a 36pF capacitance. When used with a XTAL, the two capacitors combined load the crystal with 18pF. If driving
XIN with a reference clock signal, the load capacitance will be 36pF (typical).
PLL701-14
Low EMI Spread Spectrum 6x Multiplier Clock
47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991
www.phaselink.com
Rev 08/12/04 Page 4
3. TIMING CHARACTERISTICS
PARAMETERS SYMBOL
CONDITIONS
MIN.
TYP.
MAX.
UNITS
Rise Time
T
r
Measured at 0.8V ~ 2.0V @ 3.3V
0.8
0.95
1.1
ns
Fall Time
T
f
Measured at 2.0V ~ 0.8V @ 3.3V
0.78
0.85
0.9
ns
Output Duty Cycle
D
T
45 50 55 %
Cycle to Cycle Jitter
T
cyc-cyc
FOUT=72MHz @ 3.3V
100
ps
PLL701-14
Low EMI Spread Spectrum 6x Multiplier Clock
47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991
www.phaselink.com
Rev 08/12/04 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
PLL701-14 S C
Order Number
Marking
Package Option
PLL701-14SC-R P701-14SC
SOIC -Tape and Reel
PLL701-14SC P701-14SC SOIC
Tube
PART NUMBER
TEMPERATURE
C=COMMERCIAL
I=INDUSTRIAL
PACKAGE TYPE
S=SOIC
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
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