PLL502-02 Datasheet, PDF (1/4 Pages) List of Unclassifed Manufacturers – Low Phase Noise VCXO (24MHz to 50MHz)

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.
PIN CONFIGURATION
XOUT 1
N/C 2
VCON 3
GND 4
8 XIN
7 N/C
6 VDD
5 CLK
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 volt-
age controlled frequency sources. Input crystal can
range from 12 to 25MHz (fundamental resonant
mode).
BLOCK DIAGRAM
OUTPUT RANGE
MULTIPLIER
x2
FREQUENCY
RANGE
24 - 50MHz
OUTPUT
BUFFER
CMOS
VCO
Divider
Reference
Divider
Phase
Comparator
Charge
Pump
XIN
XOUT
XTAL
OSC
VARICAP
VCON
Loop
Filter
VCO
OE
CLK
47745 Fremont Blvd., Fremont, California 94538 Tel [phone] Fax [phone] www.phaselink.com Rev 12/14/05 Page 1