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PLL502-02
Low Phase Noise VCXO (24MHz to 50MHz)
FEATURES
* * * * * * * * * Low phase noise VCXO output for the 24MHz to 50MHz range (-130 dBc at 10kHz offset). CMOS output. 12 to 25MHz crystal input. Integrated variable capacitors. Selectable High Drive (30mA) or Standard Drive (10mA) output. Wide pull range (+/- 250 ppm typ.). Low jitter (RMS): 3ps period (1 sigma). 3.3V operation. Available in 8-Pin SOIC.
PIN CONFIGURATION
XOUT N/C VCON GND
1 2 3 4
8 7 6 5
XIN N/C VDD CLK
PLL502-02
DESCRIPTION
The PLL502-02 is a low cost, high performance, low phase noise VCXO, providing less than -130dBc at 10kHz offset in the 24MHz to 50MHz operating range. The very low jitter (3 ps RMS period jitter) makes this chip ideal for applications requiring voltage controlled frequency sources. Input crystal can range from 12 to 25MHz (fundamental resonant mode).
OUTPUT RANGE
MULTIPLIER x2 FREQUENCY RANGE 24 - 50MHz OUTPUT BUFFER CMOS
BLOCK DIAGRAM
VCO Divider
Reference Divider
Phase Comparator
Charge Pump
Loop Filter
VCO
CLK
XIN XOUT
XTAL OSC VARICAP
OE
VCON
47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991 www.phaselink.com Rev 12/14/05 Page 1
PLL502-02
Low Phase Noise VCXO (24MHz to 50MHz)
PIN DESCRIPTIONS
Name
XOUT N/C VCON GND CLK VDD XIN
Number
1 2,7 3 4 5 6 8
Type
I I P O P I Not connected. Voltage Control input. Ground. Output clock. +3.3V power supply.
Description
Crystal output. See Crystal Specifications on page 3.
Crystal input. See Crystal Specifications on page 3.
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
VDD VI VO TS TA TJ
MIN.
-0.5 -0.5 -65 -40
MAX.
4.6 VDD+0.5 VDD+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 Specifications PARAMETERS
Supply Current, Dynamic, with Loaded Outputs Operating Voltage Output drive current (High Drive) Output drive current (Standard Drive) Short Circuit Current VCXO Control Voltage VCON 0
SYMBOL
IDD VDD IOH IOL IOH IOL
CONDITIONS
FXIN = 12 - 25MHz Output load of 10pF
MIN.
TYP.
16
MAX.
20 3.63
UNITS
mA V mA mA mA mA
2.97 VOH= VDD-0.4V, VDD=3.3V VOL = 0.4V, VDD = 3.3V VOH= VDD-0.4V, VDD=3.3V VOL = 0.4V, VDD = 3.3V 30 30 10 10 50
mA 3.3 V
47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991 www.phaselink.com Rev 12/14/05 Page 2
PLL502-02
Low Phase Noise VCXO (24MHz to 50MHz)
3. AC Electrical Specifications PARAMETERS
Input Crystal Frequency Output Clock Rise/Fall Time (Standard Drive) Output Clock Rise/Fall Time (High Drive) Output Clock Duty Cycle 0.3V ~ 3.0V with 15 pF load 0.3V ~ 3.0V with 15 pF load Measured @ 50% VDD 45
SYMBOL
CONDITIONS
MIN.
12
TYP.
MAX.
25
UNITS
MHz
2.4 ns 1.2 50 55 %
4. Voltage Control Crystal Oscillator PARAMETERS
VCXO Stabilization Time * VCXO Tuning Range CLK output pullability VCXO Tuning Characteristic Pull range linearity VCON pin input impedance VCON modulation BW
SYMBOL
TVCXOSTB
CONDITIONS
From power valid FXIN = 12 - 25MHz; XTAL C0/C1 < 250 0V VCON 3.3V VCON=1.65V, 1.65V
MIN.
TYP.
MAX.
10
UNITS
ms ppm ppm ppm/V % k kHz
500 200 165 10 2000 25
0V VCON 3.3V, -3dB
Note: Parameters denoted with an asterisk (*) represent nominal characterization data and are not production tested to any specific limits.
5. Jitter and Phase Noise Specification PARAMETERS
RMS Period Jitter (1 sigma - 1000 samples) Phase Noise relative to carrier Phase Noise relative to carrier Phase Noise relative to carrier Phase Noise relative to carrier Phase Noise relative to carrier
CONDITIONS
at 44MHz, with capacitive decoupling between VDD and GND. 44MHz @100Hz offset 44MHz @1kHz offset 44MHz @10kHz offset 44MHz @100kHz offset 44MHz @1MHz offset
MIN.
TYP.
3 -100 -123 -130 -125 -125
MAX.
UNITS
ps dBc/Hz dBc/Hz dBc/Hz dBc/Hz dBc/Hz
6. Crystal Specifications PARAMETERS
Crystal Resonator Frequency Crystal Loading Capacitance Rating C0/C1 ESR
SYMBOL
FXIN CL (xtal) RS
MIN.
12
TYP.
9.5
MAX.
25 250 30
UNITS
MHz pF
Note: Crystal Loading rating: 9.5pF is the loading the crystal sees from the VCXO chip at VCON = 1.65V. It is assumed that the crystal will be at nominal frequency at this load. If the crystal requires more load to be at nominal frequency, the additional load must be added externally. This however may reduce the pull range.
47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991 www.phaselink.com Rev 12/14/05 Page 3
PLL502-02
Low Phase Noise VCXO (24MHz to 50MHz)
PACKAGE INFORMATION
8 PIN SOIC (in mm)
Symbol A A1 B C D E H L e Min. Max. 1.47 1.73 0.10 0.25 0.33 0.51 0.19 0.25 4.80 4.95 3.80 4.00 5.80 6.20 0.38 1.27 1.27 BSC E H
D
A A1 e B C L
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
PLL502-02 H S C X X
PART NUMBER Optional High Drive PACKAGE TYPE S=SOIC NONE= TUBE R=TAPE AND REEL NONE=NORMAL PACKAGE L=GREEN PACKAGE TEMPERATURE C=COMMERCIAL, I=INDUSTRIAL
Order Number
PLL502-02SC PLL502-02SC-R PLL502-02SCL PLL502-02SCL-R PLL502-02HSC PLL502-02HSC-R PLL502-02HSCL PLL502-02HSCL-R
Marking
P502-02SC P502-02SC P502-02SCL P502-02SCL P502-02HSC P502-02HSC P502-02HSCL P502-02HSCL
Package Option
SOIC - Tube SOIC - Tape and Reel SOIC - Tube, GREEN SOIC - Tape and Reel, GREEN 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 12/14/05 Page 4

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