PLL502-50

VCXO IC Die for 20 to 52MHz Parallel Resonant Crystals

47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991 www.phaselink.com Rev 09/17/04 Page 1

FEATURES

• Integrated voltage-controlled crystal oscillator

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

• Selectable frequency dividers (x1, 1/2, 1/4, 1/8)

available as bonding options.

• VCXO tuning range: 0.3V - 3.0V.

• 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 DIE (65 mil x 62 mil).

DESCRIPTION

The PLL502-50 is a monolithic low jitter, high

performance CMOS VCXO IC Die. It allows the

control of the output frequency with an input voltage

(VCON), using a low cost crystal.

The same die can be used as a VCXO with output

to selector pads allowing bonding options (see

Divider Selection Table on this page). This makes

the PLL502-50 ideal for a wide range of applications

from 2.5MHz to 52MHz (including 27MHz,

35.328MHz, etc.).

BLOCK DIAGRAM

DIE SPECIFICATIONS

Name

Value

Size

62 x 65 mil

Reverse side

GND

Pad dimensions

80 micron x 80 micron

Thickness

10 mil

DIE CONFIGURATION

DIVIDER SELECTION

SELECTION

S2

S1

S0

CLK (MHz)

0

0

0

0

0

1

÷ 2

0

1

0

÷ 4

0

1

1

1

0

0

÷ 8

1

0

1

÷ 4*

1

1

0

÷ 2*

1

1

1

20MHz – 52MHz

÷ 8*

Note: Selector pads default to ‘0’, wire bond to VDD to set to ‘1’

(*) High-drive CMOS output

PAD DESCRIPTIONS

Name

Number

Description

XIN

27

Crystal input connection.

XOUT

29

Crystal output connection.

VCON

31

Voltage Control input.

GND

7,10

Ground.

CLK

13

Clock output.

S[0:2]

18,19,20

Frequency selection pad

VDD

21,22,23

Power supply.

OE

25

Output Enable: ‘0’ to disable

(tri-state output), 1’ (default

value when not connected) to

enabled the output.

VCON

XIN

VCXO

CLK

Selectable

Divider

18

19

20

21

23

25

7

13

10

27

29

31

Y

X

(0,0)

(1550,1475)

65 mil

GND

CLK

VCON

XOUT

XIN

Note:

^ denotes internal pull up

Die ID:

A0303-03J

C502A