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Micrel Semiconductor

PL502-02 Datasheet Preview

PL502-02 Datasheet

Low Phase Noise VCXO

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PL502-02
Low Phase Noise VCXO (24MHz to 50MHz)
FE AT UR E S
Low phase noise VCXO output for the 24MHz to
50MHz range (-130 dBc at 10kHz offset)
LVCMOS output
12 to 25MHz crystal input
Integrated variable capacitors
Available with High Drive (30mA) or Standard
Drive (10mA) output
Wide pull range (± 250 ppm typical)
Low period jitter: 3ps RMS
3.3V operation
Available in 8-Pin SOP.
PIN CONFIGURATION
XOUT
N/C
VCON
GND
1
2
3
4
8 XIN
7 N/C
6 VDD
5 CLK
SOP-8L
DESCRIPTION
The PL502-02 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 volt-
age controlled frequency sources. Input crystal can
range from 12MHz to 25MHz (fundamental resonant
mode).
OUTPUT RANGE
MULTIPLIER
FREQUENCY
RANGE
x2 24 to 50MHz
OUTPUT
BUFFER
LVCMOS
BLOCK DIAGRAM
VCO
Divider
Reference
Divider
Phase
Comparator
Charge
Pump
XIN
XOUT
XTAL
OSC
VARICAP
VCON
Loop
Filter
VCO
OE
CLK
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944 -0800 • fax +1(408) 474-1000 • www.micrel.com Rev 5/16/11 Page 1




Micrel Semiconductor

PL502-02 Datasheet Preview

PL502-02 Datasheet

Low Phase Noise VCXO

No Preview Available !

PIN DESCRIPTIONS
Name
Number
XOUT
N/C
VCON
GND
CLK
VDD
XIN
1
2,7
3
4
5
6
8
PL502-02
Low Phase Noise VCXO (24MHz to 50MHz)
Type
Description
I Crystal output. See Crystal Specifications on page 4.
- Not connected.
I Voltage Control input.
P Ground.
O Output clock.
P +3.3V power supply.
I Crystal input. See Crystal Specifications on page 4.
ELECTRICAL SPECIFICATIONS
1. Absolute Maximum Ratings
PARAMETERS
SYMBOL
MIN.
MAX.
UNITS
Supply Voltage
Input Voltage, dc
Output Voltage, dc
Storage Temperature
Ambient Operating Temperature*
Junction Temperature
Lead Temperature (soldering, 10s)
ESD Protection, Human Body Model
VDD 4.6 V
VI
-0.5
VDD+0.5
V
VO
-0.5
VDD+0.5
V
TS -65
150 C
TA -40
85 C
TJ 125 C
260 C
2 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 dev ice at these or any other con-
ditions above the operational limits noted in this specification is not implied. Note: Operating Temperature is guaranteed by design for all parts (CO M-
MERCIAL and INDUSTRIAL), but tested for COMMERCIAL grade only.
2. AC Electrical Specifications
PARAMETERS
SYMBOL
CONDITIONS
MIN. TYP. MAX. UNITS
Input Crystal Frequency
12 25 MHz
Output Clock Rise/Fall Time
(Standard Drive)
Output Clock Rise/Fall Time
(High Drive)
tr/tf 0.3V ~ 3.0V, 15 pF load
tr/tf 0.3V ~ 3.0V, 15 pF load
2.4
1.2
ns
Output Clock Duty Cycle
Measured @ 50% VDD
45 50 55 %
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944 -0800 • fax +1(408) 474-1000 • www.micrel.com Rev 5/16/11 Page 2


Part Number PL502-02
Description Low Phase Noise VCXO
Maker Micrel Semiconductor
Total Page 5 Pages
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