查询PLL502-02供应商
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.
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).
PIN CONFIGURATION
XOUT
N/C
VCON
GND
1
PLL502-02
2
3
45
XIN
8
N/C
7
VDD
6
CLK
OUTPUT RANGE
MULTIPLIER
x2 24 - 50MHz CMOS
FREQUENCY
RANGE
OUTPUT
BUFFER
BLOCK DIAGRAM
Reference
Divider
XIN
XOUT
XTAL
OSC
VARICAP
VCON
VCO
Divider
Phase
Comparator
Charge
Pump
Loop
Filter
VCO
CLK
OE
47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991 www.phaselink.com Rev 09/17/04 Page 1
PLL502-02
Low Phase Noise VCXO (24MHz to 50MHz)
PIN DESCRIPTIONS
Name Number Type Description
XOUT 1 I Crystal output. See Crystal Specifications on page 3.
N/C 2,7 - Not connected.
VCON 3 I Voltage Control input.
GND 4 P Ground.
CLK 5 O Output clock.
VDD 6 P +3.3V power supply.
XIN 8 I Crystal input. See Crystal Specifications on page 3.
ELECTRICAL SPECIFICATIONS
1. Absolute Maximum Ratings
PARAMETERS SYMBOL MIN. MAX. UNITS
Supply Voltage VDD 4.6 V
Input Voltage, dc VI -0.5 VDD+0.5 V
Output Voltage, dc VO -0.5 VDD+0.5 V
Storage Temperature TS -65 150
Ambient Operating Temperature* TA -40 85
Junction Temperature TJ 125
Lead Temperature (soldering, 10s) 260
ESD Protection, Human Body Model 2 kV
°C
°C
°C
°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 COMMERCIAL grade only.
2. DC Specifications
PARAMETERS SYMBOL CONDITIONS MIN. TYP. MAX. UNITS
Supply Current, Dynamic, with
Loaded Outputs
Operating Voltage V
Output drive current
(High Drive)
Output drive current
(Standard Drive)
Short Circuit Current
I
DD
DD
IOH VOH= VDD-0.4V, VDD=3.3V 30 mA
I
V
OL
IOH VOH= VDD-0.4V, VDD=3.3V 10 mA
I
V
OL
VCXO Control Voltage VCON 0 3.3 V
47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991 www.phaselink.com Rev 09/17/04 Page 2
F
= 12 - 25MHz
XIN
Output load of 10pF
16 20 mA
2.97 3.63 V
= 0.4V, VDD = 3.3V 30 mA
OL
= 0.4V, VDD = 3.3V 10 mA
OL
±50
mA
PLL502-02
Low Phase Noise VCXO (24MHz to 50MHz)
3. AC Electrical Specifications
PARAMETERS SYMBOL CONDITIONS MIN. TYP. MAX. UNITS
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 2.4
0.3V ~ 3.0V with 15 pF load 1.2
Measured @ 50% VDD 45 50 55 %
12
25 MHz
4. Voltage Control Crystal Oscillator
PARAMETERS SYMBOL CONDITIONS MIN. TYP. MAX. UNITS
VCXO Stabilization Time * T
VCXO Tuning Range
CLK output pullability
VCXO Tuning Characteristic
Pull range linearity
VCON pin input impedance
VCON modulation BW
Note: Parameters denoted with an asterisk (*) represent nominal characterization data and are not production tested to any specific limits.
From power valid 10 ms
VCXOSTB
F
= 12 – 25MHz;
XIN
XTAL C
0/C1
< 250
500 ppm
0V ≤ VCON ≤ 3.3V
VCON=1.65V, ±1.65V ±200
165 ppm/V
10 %
2000
0V ≤ VCON ≤ 3.3V, -3dB
25 kHz
ppm
ns
kΩ
5. Jitter and Phase Noise Specification
PARAMETERS CONDITIONS MIN. TYP. MAX. UNITS
RMS Period Jitter
(1 sigma – 1000 samples)
Phase Noise relative to carrier 44MHz @100Hz offset -100 dBc/Hz
Phase Noise relative to carrier 44MHz @1kHz offset -123 dBc/Hz
Phase Noise relative to carrier 44MHz @10kHz offset -130 dBc/Hz
Phase Noise relative to carrier 44MHz @100kHz offset -125 dBc/Hz
Phase Noise relative to carrier 44MHz @1MHz offset -125 dBc/Hz
at 44MHz, with capacitive decoupling between VDD and GND.
3 ps
6. Crystal Specifications
PARAMETERS SYMBOL MIN. TYP. MAX. UNITS
Crystal Resonator Frequency F
Crystal Loading Capacitance Rating C
C0/C1 250 -
ESR RS 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.
12 25 MHz
XIN
9.5 pF
L (xtal)
Ω
47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991 www.phaselink.com Rev 09/17/04 Page 3
PLL502-02
(Tap
)
Low Phase Noise VCXO (24MHz to 50MHz)
PACKAGE INFORMATION
8 PIN SOIC (in mm)
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
ORDERING INFORMATION
A1
D
B
e
EH
A
C
L
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) X C
PART NUMBER
Optional High Drive
Order Number Marking Package Option
PLL502-02SC P502-02SC 8-Pin SOIC (Tube)
PLL502-02SC -R P502-02SC 8-Pin SOIC (Tape and Reel)
PLL502-02HSC P502-02HSC 8-Pin SOIC (Tube)
PLL502-02HSC -R P502-02HSC 8-Pin SOIC
TEMPERATURE
C=COMMERCIAL
I=INDUSTRIAL
PACKAGE TYPE
S=SOIC
e 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
Loading...