PLL501-21/23
VCXO Clock Generator IC
FEATURES
•
•
•
•
•
•
•
•
On-chip tunable voltage-controlled crystal
oscillator circuitry (VCXO) allows precise system
frequency tuning (pull range 200ppm minimum).
VCXO tuning range: 0-3.3V.
Uses inexpensive fundamental-mode crystals.
Integrated phase-locked loop (PLL) multiplies
VCXO frequency to the higher system
frequencies needed.
3.3V supply voltage.
Small circuit board footprint (8-pin 0.150’’ SOIC).
Custom frequency selections available.
12mA output drives capability at TTL level.
PIN CONFIGURATION
XIN
VDD
VIN
GND
1
2
3
4
8
7
6
5
XOUT
GND
VDD
CLK
Table 1: Crystal / Output Frequencies
DEVICE
PLL501-21
F
XIN
(MHz)
13.5
13.5
CLK (MHz)
27
54
PLL501-XX
DESCRIPTIONS
The PLL501-21/23 is a monolithic low Jitter, high
performance CMOS clock generator IC. It has a
circuitry that implements a voltage-controlled crystal
oscillator when an external resonator (nominally
13.5MHz) is attached. The VCXO allows device
frequencies to be precisely adjusted for matching
requirements.
This product is ideal for Set-Top Box and multimedia
synthesizer applications.
BLOCK DIAGRAM
PLL501-23
Note:
Contact PhaseLink for custom PLL Frequencies
XIN
VCXO
PLL
XOUT
VIN
Output
Buffer
CLK
47745 Fremont Blvd., Fremont, California 94538 TEL (510) 492-0990 FAX (510) 492-0991
Rev 01/15/01 Page 1
PLL501-21/23
VCXO Clock Generator IC
PIN DESCRIPTIONS
Name
XIN
VDD
VIN
GND
CLK
VDD
GND
XOUT
Number
1
2
3
4
5
6
7
8
Type
I
P
I
P
O
P
P
O
Description
Crystal input connection (parallel mode crystal, C
L
= 14pF).
3.3V Power Supply.
Voltage Input for VCXO Frequency Control.
Ground for PLL Core.
Clock Output.
3.3V Power Supply.
Ground.
Crystal connection.
47745 Fremont Blvd., Fremont, California 94538 TEL (510) 492-0990 FAX (510) 492-0991
Rev 01/15/01 Page 2
PLL501-21/23
VCXO Clock Generator IC
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)
Input Static Discharge Voltage Protection
SYMBOL
V
DD
V
I
V
O
T
S
T
A
T
J
V
SS
-
0.5
V
SS
-
0.5
-65
0
MIN.
MAX.
7
V
DD
+
0.5
V
DD
+
0.5
150
70
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.
2. DC Electrical Specifications
PARAMETERS
Supply Current, Dynamic,
with Loaded Outputs
Operating Voltage
Output High Voltage
Output Low Voltage
Output High Voltage at
CMOS level
Operating Supply Current
Short Circuit Current
VIN, VCXO Control Voltage
0
SYMBOL
I
DD
V
DD
V
OH
V
OL
V
OHC
I
DD
I
OH
= -12mA
I
LO
= 12mA
I
OH
= -4mA
No Load
V
DD
– 0.4
7
±50
3.3
CONDITIONS
f
XTA
= 13.5MHz
Ouput load of 4pF
3.13
2.4
0.4
MIN.
TYP.
20
3.47
MAX.
UNITS
mA
V
V
V
V
mA
mA
V
47745 Fremont Blvd., Fremont, California 94538 TEL (510) 492-0990 FAX (510) 492-0991
Rev 01/15/01 Page 3
PLL501-21/23
VCXO Clock Generator IC
3. AC Electrical Specifications
PARAMETERS
Input Crystal Frequency
Input Crystal Accuracy
Output Clock Rise Time
Output Clock Fall Time
Output Clock Duty Cycle
Max Absolute Jitter
Short Circuit Current
CLK output pullability
4. Voltage Control Crystal Oscillator
PARAMETERS
PLL Stabilization Time *
VCXO Stabilization Time *
Output Frequency Synthesis
Error
t
r
t
f
SYMBOL
CONDITIONS
MIN.
TYP.
13.5
MAX.
±30
UNITS
MHz
ppm
ns
ns
%
ps
mA
ppm
0.8V ~ 2.0V
2.0V ~ 0.8V
Measured @ 1.4V
Short Term
0V≤VIN≤3.3V
±100
45
50
100
±50
1.5
1.5
55
SYMBOL
T
PLLSTB
T
VCXOSTB
CONDITIONS
From VCXO stable
From power valid
(Unless otherwise noted in
Frequency Table)
MIN.
TYP.
500
10
MAX.
UNITS
us
ms
±30
ppm
Crystal Resonator
Frequency
Crystal Loading
Capacitance
Crystal Resonator Motional
Capacitance
VCXO Tuning Range
VCXO Tuning Characteristic
f
XTAL
C
L(xtal)
C
1(xtal)
Parallel Fundamental
Mode
V
XTUNE
=1.65V
At cut
10
13.5
14
25
200
100
15
MHz
pF
fF
ppm
ppm/V
f
XTA
= 13.5MHz;
C
L
=14pF; C
MOT
=25fF
Note:
Parameters denoted with an asterisk ( * ) represent nominal characterization data and are not production tested to any specific limits.
External Components
The PLL501-21/23 requires a minimum number of external components for proper operation. A
decoupling capacitor of 0.01µF should be connected between VDD and GND on pin2 and 4, as close to
the PLL501-21/23 as possible. A series termination resistor of 33Ω may be used for the clock output.
The input crystal must be connected as close to the chip as possible. The input crystal should be a
parallel mode, pullable, AT cut, 13.5MHz, with 14pF load capacitance and a C0/C1 ratio of maximum
250. Consult PhaseLink for recommended suppliers.
47745 Fremont Blvd., Fremont, California 94538 TEL (510) 492-0990 FAX (510) 492-0991
Rev 01/15/01 Page 4
PLL501-21/23
VCXO Clock Generator IC
PACKAGE INFORMATION
8 PIN Narrow SOIC ( mm )
SOIC
Symbol
A
A1
B
C
D
E
H
L
e
Min.
1.55
0.15
0.35
0.19
4.80
3.81
5.84
0.41
1.27 BSC
Max.
1.73
0.18
0.49
0.25
4.98
3.99
6.20
0.89
A
1
B
e
A
C
L
D
E
H
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
PLL501-21 S C
PART NUMBER
TEMPERATURATRE
C=COMMERCIAL
M=MILITARY
I=INDUSTRAL
S=SOIC
PACKAGE TYPE
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
Rev 01/15/01 Page 5
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