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PLL502-05
Low Phase Noise VCXO (12MHz to 25MHz)
FEATURES
* * * * * * * * Low phase noise VCXO output for the 12MHz to 25MHz range (-135 dBc at 10kHz offset). CMOS output. 12 to 25MHz crystal input. Integrated variable capacitors. Wide pull range (+/- 300 ppm). Low jitter (RMS): 2.2ps period. 2.5 or 3.3V operation voltage. Available in 8-Pin SOIC.
PIN CONFIGURATION
XOUT N/C VCON GND 1 2 3 4 8 7 6 5 XIN OE^ VDD CLK
Note: ^ denotes internal pull up
PLL502-05
DESCRIPTION
The PLL502-05 is a low cost, high performance and low phase noise VCXO, providing less than -135dBc at 10 kHz offset in the 12MHz to 25MHz operating range. The very low jitter (2.2ps 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 No PLL FREQUENCY RANGE 12 - 25MHz 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 09/17/04 Page 1
PLL502-05
Low Phase Noise VCXO (12MHz to 25MHz)
PIN DESCRIPTIONS
Name
XOUT N/C VCON GND CLK VDD OE XIN
Number
1 2 3 4 5 6 7 8
Type
I I P O P I I Not connected. Voltage Control input. Ground. Output clock. VDD power supply pin.
Description
Crystal output. See Crystal Specifications on page 3.
Output Enable input. Disables the output when low. Internal pull-up enables output by default if pin is not connected to low. 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 Electrical Specifications PARAMETERS
Supply Current, Dynamic, with Loaded Outputs Operating Voltage Output drive current Short Circuit Current VCXO Control Voltage
SYMBOL
IDD VDD IOH IOL VCON
CONDITIONS
FXIN = 12 - 25MHz Output load of 10pF VOH= VDD-0.4V, VDD=3.3V VOL = 0.4V, VDD = 3.3V
MIN.
TYP.
16
MAX.
20 3.63
UNITS
mA V mA mA mA V
2.25 10 10 50 0
VDD
47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991 www.phaselink.com Rev 09/17/04 Page 2
PLL502-05
Low Phase Noise VCXO (12MHz to 25MHz)
3. AC Electrical Specifications PARAMETERS
Input Crystal Frequency Output Clock Rise/Fall Time Output Clock Duty Cycle
SYMBOL
CONDITIONS
0.3V ~ 3.0V with 15 pF load Measured @ 50% VDD
MIN.
12 45
TYP.
2.4 50
MAX.
25 55
UNITS
MHz ns %
4. Voltage Control Crystal Oscillator (3.3V) 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
500 200 150 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
with capacitive decoupling between VDD and GND. 25MHz @100Hz offset 25MHz @1kHz offset 25MHz @10kHz offset 25MHz @100kHz offset 25MHz @1MHz offset
MIN.
TYP.
2.2 -95 -120 -142 -150 -150
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
F XIN 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 09/17/04 Page 3
PLL502-05
Low Phase Noise VCXO (12MHz to 25MHz)
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 A 1 e B 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
PLL502-05 x x
Part Number Temperature C=Commercial I=Industrial Package S=SOIC
Order Number PLL502-05SC PLL502-05SC-R
Marking P502-05SC P502-05SC
Package Option 8-Pin SOIC (Tube) 8-Pin SOIC (Tape and Reel)
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 09/17/04 Page 4

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