PLL520-40

CMOS Low Phase Noise VCXO (for 65-130MHz Fund Xtal)

47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991 www.phaselink.com Rev 09/20/04 Page 4

PAD ASSIGNMENT

Pad #

Name

X (

µm)

Y (

µm)

Description

1

Optional GND

248

109

Optional Ground.

2

Optional GND

361

109

Optional Ground.

3

Optional GND

473

109

Optional Ground.

4

Optional GND

587

109

Optional Ground.

5

GND

702

109

Ground.

6

Reserved

874

109

Reserved for future use.

7

Optional GNDBUF

1042

109

Optional Ground, buffer circuitry.

8

Optional GNDBUF

1171

109

Optional Ground, buffer circuitry.

9

Not connected

1400

125

Not Connected.

10

Not connected

1400

259

Not Connected..

11

CMOS OUT

1400

476

CMOS output.

12

VDDBUF

1400

616

Power supply, buffer circuitry.

13

Optional VDDBUF

1400

716

Optional power supply, buffer circuitry.

14

Not connected

1400

871

Not Connected.

15

Not connected

1400

1089

Not Connected.

16

Optional CMOS OUT

1400

1227

Optional CMOS output.

17

GNDBUF

1389

1365

Ground, buffer circuitry.

18

Reserved

1232

1365

Reserved for future use.

19

DRIVE_SEL

1042

1365

Used to select drive strength. See DRIVE_SEL AND

OE_CTRL TABLE on page 1.

20

Not connected

854

1365

Not Connected.

21

Optional VDD

659

1365

Optional power supply.

22

Optional VDD

559

1365

Optional power supply.

23

VDD

459

1365

Power supply.

24

Optional VDD

358

1365

Optional power supply.

25

Not connected

194

1365

Not Connected.

26

XIN

109

1223

Crystal input. See Crystal Specifications on page 2.

27

XOUT

109

1017

Crystal output. See Crystal Specifications on page 2.

28

Not connected

109

858

Not Connected.

29

Not connected

109

646

Not Connected.

30

OE_CTRL

109

397

Used to enable/disable the output(s). See

DRIVE_SEL AND OE_CTRL TABLE on page 1.

Internal pull up.

31

VCON

109

181

Voltage control input.

Note: for optimal Phase Noise performance, it is recommended to bond all optional VDD and GND pads.