PL502-02 Datasheet, PDF (1/5 Pages) Micrel Semiconductor – Low Phase Noise VCXO (24MHz to 50MHz)

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 1
N/C 2
VCON 3
GND 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 [phone] • fax [phone] • www.micrel.com Rev 5/16/11 Page 1