Preliminary
PLL701-05
Low EMI Spread Spectrum Multiplier Clock
47745 Fremont Blvd., Fremont, California 94538 TEL (510) 492-0990 FAX (510) 492-0991 Rev 09/26/02 Page 1
FEATURES
Spread Spectrum Clock Generator with selectable
multiplier from 1x to 6x outputs.
Output frequency ranges: 30MHz to 180MHz.
Modulates external clocks including crystals,
crystal oscillators and ceramic resonators.
Selectable Center or Down Spread Modulation.
TTL/CMOS compatible outputs.
3.3V Operating Voltage.
Low short term jitter.
Available in 8-Pin 150mil SOIC.
DESCRIPTIONS
The PLL701-05 is a Spread Spectrum Clock
Generator designed for the purpose of reducing EMI
in high-speed digital systems. Any output frequency
can be selected by programming 4 multiplier modes.
The device is designed to operate over a very wide
range of input frequencies and provides 1x to 4x
modulated clock outputs.
PIN CONFIGURATION
Note: . v: 120K
Internal Pull down. ^: 120K
Internal Pull up.
OUTPUT CLOCK (FOUT) SELECTION
S0
S1
S2
S3
FIN Range
(MHz)
FOUT
Spread Spectrum
modulation
frequency
Spread Spectrum
0
0
0
0
30 - 60
X1
0.75%
0
0
0
1
30 - 60
X1
1.00%
0
0
1
0
30 - 60
X1
-2.50%
0
0
1
1
30 - 60
X1
0.5-1.5%
0
1
0
0
30 - 60
X2
0.25%
0
1
0
1
30 - 60
X2
0.5%
0
1
1
0
30 - 60
X2
0.75%
0
1
1
1
30 - 60
X2
1.00%
1
0
0
0
30 - 60
X2
-2.50%
1
0
0
1
30 - 60
X2
0.5-1.5%
1
0
1
0
30 - 45
X4
0.25-1.25%
1
0
1
1
30 - 45
X4
0.5-1.5%
1
1
0
0
60 - 120
X1
0.25%
1
1
0
1
60 - 120
X1
0.50%
1
1
1
0
60 - 120
X1
0.25-1.25%
1
1
1
1
60 - 120
X1
Fin / 512
0.5-1.5%
PLL701-05
1
2
3
4
5
6
7
8
FIN
S0^
S1^
S2
v
VDD
FOUT
GND
S3
v
FIN = 30 ~ 120 Mhz
Preliminary
PLL701-05
Low EMI Spread Spectrum Multiplier Clock
47745 Fremont Blvd., Fremont, California 94538 TEL (510) 492-0990 FAX (510) 492-0991 Rev 09/26/02 Page 2
BLOCK DIAGRAM
PIN DESCRIPTIONS
Name
Number
Type
Description
FIN
1
I
Input Clock Frequency.
S0
2
I
Digital control input to select output frequency. Has internal pull-up.
S1
3
I
Digital control input to select output frequency. Has internal pull-up.
S2
4
I
Digital control input to select output frequency. Has internal pull-down.
S3
7
I
Digital control input to select output frequency. Has internal pull-down.
VDD
8
P
3.3V Power Supply.
FOUT
6
O
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).
GND
5
P
Ground.
XTAL
OSC
FOUT
XIN
XOUT
S(0:3)
PLL
SST
Control
Logic
VDD
Preliminary
PLL701-05
Low EMI Spread Spectrum Multiplier Clock
47745 Fremont Blvd., Fremont, California 94538 TEL (510) 492-0990 FAX (510) 492-0991 Rev 09/26/02 Page 3
ELECTRICAL SPECIFICATIONS
1. Absolute Maximum Ratings
PARAMETERS
SYMBOL
MIN.
MAX.
UNITS
Supply Voltage
V
DD
V
SS
-
0.5
6
V
Input Voltage Range
V
I
V
SS
-
0.5
V
DD
+
0.5
V
Output Voltage Range
V
O
V
SS
-
0.5
V
DD
+
0.5
V
Soldering Temperature
260
C
Storage Temperature
T
S
-65
150
C
Ambient Operating Temperature*
T
A
-40
85
C
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 INDUSTRIAL grade only.
2. DC/AC Specification
PARAMETERS
SYMBOL
CONDITIONS
MIN.
TYP.
MAX.
UNITS
Supply Voltage
V
DD
3.15
3.45
V
Input High Voltage
V
IH
0.7*VDD
V
Input Low Voltage
V
IL
0.3*VDD
V
Input High Current
I
IH
100
A
Input Low Current
I
IL
100
A
Output High Voltage
V
OH
I
OH
=5mA, VDD=3.3V
2.4
Output Low Voltage
V
OL
I
OL
=6mA, VDD=3.3V
0.4
Input Frequency
F
IN
30
120
MHz
Maximum interruption of F
IN
100
s
Input Capacitance
C
in1
4
pF
Pull-up Resistor
R
pu
PIN 2, 3
60
125
200
K
Pull-down Resistor
R
pd
PIN 4, 7
60
125
200
K
Short Circuit Current
I
sc
25
mA
3.3V Dynamic Supply Current
I
CC
No Load
20
mA
Preliminary
PLL701-05
Low EMI Spread Spectrum Multiplier Clock
47745 Fremont Blvd., Fremont, California 94538 TEL (510) 492-0990 FAX (510) 492-0991 Rev 09/26/02 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=48MHz @ 3.3V
100
ps
Cycle to Cycle Jitter
T
cyc-cyc
FOUT=72MHz @ 3.3V
100
ps
INPUT LOGIC SELECTION THROUGH RESISTOR LOAD OPTION
Register
Power Up
Reset
Jumper options
27KOhm
Strapping
Resistor
Clock Load
S2
XIN
EN
R
RB
VDD
RB
120Kohm
XOUT
Preliminary
PLL701-05
Low EMI Spread Spectrum Multiplier Clock
47745 Fremont Blvd., Fremont, California 94538 TEL (510) 492-0990 FAX (510) 492-0991 Rev 09/26/02 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
PLL701-05 S C
PART NUMBER
TEMPERATURATURE
C=COMMERCIAL
M=MILITARY
I=INDUSTRAL
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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