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Preliminary for proposal
PLL502-01
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 (36mA drive capability at TTL level) or Standard Drive (12mA drive capability at TTL) output. Wide pull range (+/- 250 ppm). Low jitter (RMS): 10ps period. 3.3V operation. Available in 8-Pin TSSOP or SOIC.
PIN CONFIGURATION
XOUT N/C VIN GND
1 2 3 4
8 7 6 5
XIN OE VDD CLK
OUTPUT RANGE
MULTIPLIER FREQUENCY RANGE OUTPUT BUFFER
PLL502-01
DESCRIPTIONS
The PLL502-01 is a low cost, high performance and low phase noise VCXO, providing less than -130dBc at 10kHz offset in the 24MHz to 50MHz operating range. The very low jitter (10 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).
x2
24 - 50MHz
CMOS
BLOCK DIAGRAM
VCO Divider
Reference Divider
Phase Comparator
Charge Pump
Loop Filter
VCO
CLK
XIN XOUT
OE
XTAL OSC VARICAP
VIN
47745 Fremont Blvd., Fremont, California 94538 TEL (510) 492-0990 FAX (510) 492-0991
Rev 4/01/02 Page 1
Preliminary for proposal
PLL502-01
Low Phase Noise VCXO (24MHz to 50MHz)
PIN DESCRIPTIONS
Name
XOUT N/C VIN GND CLK VDD OE XIN
Number
1 2 3 4 5 6 7 8
Type
I I P O P I I Crystal output pin. Not connected.
Description
Frequency control voltage input pin. Ground pin. Output clock pin. +3.3V VDD power supply pin. Output enable input pin. Disables (tri-state) output when low. Internal pullup enables output by default if pin is not connected to low. Crystal input pin.
ELECTRICAL SPECIFICATIONS
1. Absolute Maximum Ratings PARAMETERS
Supply Voltage Range Input Voltage Range Output Voltage Range Soldering Temperature Storage Temperature Ambient Operating Temperature* TS -65 -40
SYMBOL
V CC VI VO
MIN.
MAX.
7 V CC +0.5 V CC +0.5 260 150 85
UNITS
V V V C C C
-0.5 -0.5 -0.5
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.
47745 Fremont Blvd., Fremont, California 94538 TEL (510) 492-0990 FAX (510) 492-0991
Rev 4/01/02 Page 2
Preliminary for proposal
PLL502-01
Low Phase Noise VCXO (24MHz to 50MHz)
2. AC Electrical Specifications PARAMETERS
Input Crystal Frequency Output Clock Rise/Fall Time (Low Drive) Output Clock Rise/Fall Time (High Drive) Output Clock Duty Cycle Short Circuit Current 0.8V ~ 2.0V with 10 pF load 0.3V ~ 3.0V with 15 pF load 0.8V ~ 2.0V with 10 pF load 0.3V ~ 3.0V with 15 pF load Measured @ 1.4V 45
SYMBOL
CONDITIONS
MIN.
12
TYP.
1.15 3.7 0.5 1.5 50 50
MAX.
25
UNITS
MHz
ns
55
% mA
3. 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 0V VIN 3.3V, -3dB 2000 25
SYMBOL
T VCXOSTB
CONDITIONS
From power valid FXIN = 12 - 25MHz; XTAL C 0 /C 1 < 250 0V VIN 3.3V
MIN.
TYP.
10
MAX.
UNITS
ms ppm ppm
500 250 165 10
ppm/V % k kHz
Note: Parameters denoted with an asterisk (*) represent nominal characterization data and are not production tested to any specific limits.
4. 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.
MAX.
10
UNITS
ps dBc/Hz dBc/Hz dBc/Hz dBc/Hz dBc/Hz
-80 -110 -130 -123 -124
47745 Fremont Blvd., Fremont, California 94538 TEL (510) 492-0990 FAX (510) 492-0991
Rev 4/01/02 Page 3
Preliminary for proposal
PLL502-01
Low Phase Noise VCXO (24MHz to 50MHz)
5. DC Specification PARAMETERS
Supply Current, Dynamic, with Loaded Outputs Operating Voltage Output High Voltage Output Low Voltage Output High Voltage at CMOS level Output drive current Short Circuit Current VCXO Control Voltage ESD Protection VCON 0
SYMBOL
IDD VDD VOH VOL VOHC
CONDITIONS
FXIN = 12 - 25MHz Ouput load of 10pF
MIN.
TYP.
16
MAX.
20 3.47 0.4
UNITS
mA V V V V
3.13 IOH = -12mA (low drive) ILO = 12mA (low drive) IOH = -4mA (low drive) At TTL level (High drive) At TTL level (Low drive) VDD - 0.4 36 12 51 17 50 2.4
mA mA mA 3.3 V
Human Body Model
3000
6. Crystal Specifications PARAMETERS
Crystal Resonator Frequency Crystal Loading Capacitance Rating C0/C1 ESR RS
SYMBOL
F XIN CL (xtal)
MIN.
12
TYP.
MAX.
25
UNITS
MHz pF
9.5 250 30
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
Rev 4/01/02 Page 4
Preliminary for proposal
PLL502-01
Low Phase Noise VCXO (24MHz to 50MHz)
PACKAGE INFORMATION
8 PIN ( dimensions in mm )
Narrow 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 Max. 1.73 0.25 0.51 0.25 4.95 4.00 6.20 1.27 1.27 BSC Min. 0.05 0.19 0.09 2.90 4.30 6.20 0.45 TSSOP Max. 1.20 0.15 0.30 0.20 3.10 4.50 6.60 0.75 0.65 BSC A1 B e C L A 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
The order number for this device is a combination of the following: Device number, Package type and Operating temperature range
PART NUMBER
PLL502-01 X C
PART NUMBER TEMPERATURATURE C=COMMERCIAL M=MILITARY I=INDUSTRAL PACKAGE TYPE S=SOIC, O=TSSOP
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 4/01/02 Page 5

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