PLL502-51

Low Phase Noise VCXO (20MHz to 52MHz)

47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991 www.phaselink.com Rev 12/14/05 Page 1

FEATURES

• Integrated voltage-controlled crystal oscillator

circuitry (VCXO) (pull range 380ppm minimum).

• Uses inexpensive fundamental-mode parallel

resonant crystals (from 20 to 52MHz).

• 2.5V or 3.3V supply voltage.

• Selectable High Drive (30mA) or Standard Drive

(10mA) CMOS output.

• Available in 8-Pin SOIC or TSSOP.

DESCRIPTION

The PLL502-51 is a monolithic low jitter, high per-

formance CMOS VCXO IC. It allows control of the

output frequency with an input voltage (VCON), us-

ing a low cost crystal.

This makes the PLL502-51 ideal for a wide range of

applications from 20MHz to 52MHz (including

27MHz, 35.328MHz, etc.).

PIN CONFIGURATION

Note: ^ denotes internal pull up

OUTPUT RANGE

MULTIPLIER

FREQUENCY

RANGE

OUTPUT

BUFFER

No PLL

20 - 52MHz

CMOS

BLOCK DIAGRAM

1

2

3

45

6

7

8

XOUT

N/C

VCON

GND

XIN

VDD

CLK

OE^

XTAL

OSC

OE

XIN

XOUT

CLK

VCON

VARICAP