PLL701-14
Low EMI Spread Spectrum 6x Multiplier Clock
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.
PIN CONFIGURATION
XIN/FIN
XOUT
SC0^
SC1^
1
8
VDD
OE^
FOUT
GND
PLL701-14
2
3
4
7
6
5
XIN/FIN = 10 ~ 30 MHz
Note:
^: Internal pull-up resistor (30 kΩ).
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.
SPREAD SPECTRUM SELECTION
SST Modulation
SC1
0
0
1
1
SC0
0
1
0
1
FOUT
Magnitude
X6
X6
X6
X6
0.250%
0.500%
0.750%
n/a
Frequency
Type
± 0.125%
± 0.25%
± 0.375%
SST turned off
Fin / 512
47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991
www.phaselink.com
Rev 08/12/04 Page 1
PLL701-14
Low EMI Spread Spectrum 6x Multiplier Clock
BLOCK DIAGRAM
XIN/FIN
XOUT
OE
XTAL
OSC
PLL
SST
FOUT
SC(0:1)
Control
Logic
PIN DESCRIPTION
Name
XIN/FIN
XOUT
SC0
SC1
GND
FOUT
OE
VDD
Number
1
2
3
4
5
6
7
8
Type
I
O
I
I
P
O
I
P
Description
Crystal input to be connected to fundamental parallel mode crystal.(C
L
=18pF) or
clock input.
Crystal output.
Digital control input to select modulation rate. 30kΩ internal pull-up.
Digital control input to select modulation rate. 30kΩ internal pull-up.
Ground connection.
Modulated Clock Frequency Output (FOUT = 6 x FIN).
Output Enable. When low, Tri-states the outputs. 30kΩ internal pull-up.
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 (30kΩ). 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”.
47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991
www.phaselink.com
Rev 08/12/04 Page 2
PLL701-14
Low EMI Spread Spectrum 6x Multiplier Clock
ELECTRICAL SPECIFICATIONS
1. Absolute Maximum Ratings
PARAMETERS
Supply Voltage
Input Voltage, dc
Output Voltage, dc
Storage Temperature
Ambient Operating Temperature*
Junction Temperature
Lead Temperature (soldering, 10s)
ESD Protection, Human Body Model
SYMBOL
V
DD
V
I
V
O
T
S
T
A
T
J
MIN.
-0.5
-0.5
-65
-40
MAX.
4.6
V
DD
+0.5
V
DD
+0.5
150
85
125
260
2
UNITS
V
V
V
°C
°C
°C
°C
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
Supply Voltage
Input High Voltage
Input Low Voltage
Input High Current
Input Low Current
Output High Voltage
Output Low Voltage
Input Frequency
Maximum interruption of F
IN
Load Capacitance
Short Circuit Current
3.3V Dynamic Supply Current
SYMBOL
V
DD
V
IH
V
IL
I
IH
I
IL
V
OH
V
OL
F
XIN
F
IN
C
L
I
sc
I
CC
CONDITIONS
MIN.
2.97
0.7* V
DD
TYP.
MAX.
3.63
0.3* V
DD
100
100
UNITS
V
V
V
µA
µA
V
V
MHz
MHz
µs
pF
mA
mA
I
OH
=5mA, V
DD
=3.3V
I
OL
=6mA, V
DD
=3.3V
When using a crystal
When using reference clock
When using reference clock
Between XIN and XOUT*
No Load
2.4
10
10
18
50
20
0.4
30
30
100
*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).
47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991
www.phaselink.com
Rev 08/12/04 Page 3
PLL701-14
Low EMI Spread Spectrum 6x Multiplier Clock
3. TIMING CHARACTERISTICS
PARAMETERS
Rise Time
Fall Time
Output Duty Cycle
Cycle to Cycle Jitter
SYMBOL
T
r
T
f
D
T
T
cyc-cyc
CONDITIONS
Measured at 0.8V ~ 2.0V @ 3.3V
Measured at 2.0V ~ 0.8V @ 3.3V
FOUT=72MHz @ 3.3V
MIN.
0.8
0.78
45
TYP.
0.95
0.85
50
MAX.
1.1
0.9
55
100
UNITS
ns
ns
%
ps
47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991
www.phaselink.com
Rev 08/12/04 Page 4
PLL701-14
Low EMI Spread Spectrum 6x Multiplier Clock
PACKAGE INFORMATION
8 PIN Narrow SOIC ( mm )
SOIC
Symbol
A
A1
B
C
D
E
H
L
e
Min.
1.47
0.10
0.33
0.19
4.80
3.80
5.80
0.38
1.27 BSC
Max.
1.73
0.25
0.51
0.25
4.95
4.00
6.20
1.27
A1
B
C
L
e
E
H
D
A
ORDERING INFORMATION
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
PART NUMBER
TEMPERATURE
C=COMMERCIAL
I=INDUSTRIAL
PACKAGE TYPE
S=SOIC
Order Number
PLL701-14SC-R
PLL701-14SC
Marking
P701-14SC
P701-14SC
Package Option
SOIC -Tape and Reel
SOIC –Tube
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.
47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991
www.phaselink.com
Rev 08/12/04 Page 5
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