PLL701-11
Low EMI Spread Spectrum Multiplier Clock
FEATURES
•
•
•
•
•
•
•
•
Spread Spectrum Clock Generator with selectable
multiplier ( 1x, 2x and 4x ).
Reference input frequency: 24MHz-120MHz.
Output frequency range: 24MHz to 240MHz.
Selectable center spread modulation rate.
TTL/CMOS compatible outputs.
3.3V Operating Voltage.
Low short term jitter.
Available in 8-Pin 150mil SOIC package.
PIN CONFIGURATION
FIN
S2^
S1^
S0
v
1
8
VDD
S3
v
FOUT
GND
PLL701-11
2
3
4
7
6
5
FIN = 24 ~ 120 Mhz
Note:
v: 30kΩ Internal Pull down. ^: 30kΩ Internal Pull up.
DESCRIPTION
The PLL701-11 is a Spread Spectrum Clock
Generator designed for the purpose of reducing EMI
in high-speed digital systems, with the selectable
Center Spread modulation amplitude (see table
below). The output frequency is selected by
programming 4 multiplier modes. The device operates
over a very wide range of input frequencies and
provides 1x to 4x modulated clock outputs.
OUTPUT CLOCK (FOUT) SELECTION
S3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
S2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
S1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
S0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
FIN Range
(MHz)
24
24
24
24
24
24
24
24
-
-
-
-
-
-
-
-
60
60
60
60
60
60
60
60
Spread Spectrum Modulation
FOUT
X1
X1
X1
X1
X2
X2
X2
X2
X2
X2
X4
X4
X1
X1
X1
X1
Frequency
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%
24 - 60
24 - 60
24 - 60
24 - 60
60
60
60
60
-
-
-
-
120
120
120
120
Fin / 1024
47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991
www.phaselink.com
Rev 01/17/06 Page 1
PLL701-11
Low EMI Spread Spectrum Multiplier Clock
BLOCK DIAGRAM
FIN
PLL
SST
FOUT
S(0:3)
Control
Logic
PIN DESCRIPTIONS
Name
FIN
S2
S1
S0
GND
FOUT
S3
VDD
Number
1
2
3
4
5
6
7
8
Type
I
I
I
I
P
O
I
P
Description
Input Clock Frequency, 24MHz to 120MHz.
Digital control input to select multiplication factor and SST modulation
amplitude. Has internal pull-up.
Digital control input to select multiplication factor and SST modulation
amplitude. Has internal pull-up.
Digital control input to select multiplication factor and SST modulation
amplitude. Has internal pull-down.
Ground.
SST Modulated Clock Frequency Output. The frequency before modulation is
synthesized by multiplying the input frequency by 1X, 2X, or 4X, depending on
S(0:3).
Digital control input to select multiplication factor and SST modulation
amplitude. Has internal pull-down.
3.3V Power Supply.
47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991
www.phaselink.com
Rev 01/17/06 Page 2
PLL701-11
Low EMI Spread Spectrum 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
Input Capacitance
Pull-up Resistor
Pull-down Resistor
Short Circuit Current
3.3V Dynamic Supply Current
SYMBOL
V
DD
V
IH
V
IL
I
IH
I
IL
V
OH
V
OL
F
IN
C
in1
R
pu
R
pd
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
I
OH
=5mA, V
DD
=3.3V
I
OL
=6mA, V
DD
=3.3V
2.4
24
4
30
30
50
20
0.4
120
none
MHz
µs
pF
kΩ
kΩ
mA
mA
PIN 2, 3
PIN 4, 7
No Load
47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991
www.phaselink.com
Rev 01/17/06 Page 3
PLL701-11
Low EMI Spread Spectrum Multiplier Clock
3. TIMING CHARACTERISTICS
PARAMETERS
Rise Time
Fall Time
Output Duty Cycle
Input to Output Delay
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
MIN.
0.8
0.78
45
2
TYP.
0.95
0.85
50
MAX.
1.1
0.9
55
4
100
UNITS
ns
ns
%
ns
ps
Over output frequency range @ 3.3V
FUNCTIONAL DESCRIPTION
Selectable spread spectrum and modulation rates
The PLL701-11 provides selectable spread spectrum modulation, as well as selectable modulation rate. Selection
is made by connecting specific pins to a logical “zero” or “one”, according to the output clock selection table and
modulation rate selection table on page 1.
Pins 2 (S2), 3 (S1), 4 (S0), and 7 (S3) are used as inputs to select the spread spectrum modulation and
multiplication factor as shown on the output clock selection table (page 1).
Default values for S(0:3) through internal pull-up and pull-down resistor
Selection pins S0 and S3 have an internal pull-down resistor of 30kΩ, pins 2 and 3 (S1 and S2) have an internal
pull-up resistor of 30kΩ. This internal pull-up (or pull-down) resistor will pull the input value to a logical “one” (or
“zero” respectively) by default, i.e. when no resistive load is connected between the pin and GND (VDD
respectively). In order to override the internal pull-up (pull-down), the pin has to be connected to GND (VDD
respectively).
47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991
www.phaselink.com
Rev 01/17/06 Page 4
PLL701-11
Low EMI Spread Spectrum 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
PLL701-11 X X X-R
PART NUMBER
NONE= TUBE
R= TAPE AND REEL
NONE= NORMAL PACKAGE
L= GREEN PACKAGE
PACKAGE TYPE
S=SOIC
TEMPERATURE
C=COMMERCIAL
I=INDUSTRIAL
Order Number
PLL701-11SC
PLL701-11SC-R
PLL701-11SCL
PLL701-11SCL-R
Marking
P701-11SC
P701-11SC
P701-11SCL
P701-11SCL
Package Option
SOIC-Tube
SOIC-Tape and Reel
SOIC-Tube
(GREEN)
SOIC-Tape and Reel
(GREEN)
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 01/17/06 Page 5
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