Preliminary

PLL502-10

750kHz – 400MHz Low Phase Noise VCXO (for 12 – 25MHz Crystals)

47745 Fremont Blvd., Fremont, California 94538 TEL (510) 492-0990 FAX (510) 492-0991

Rev 11/06/02 Page 1

FEATURES

• 750kHz to 400MHz output range.

• Low phase noise output (@ 10kHz frequency

offset, -140dBc/Hz for 19.44MHz, -127dBc/Hz for

106.25MHz, -125dBc/Hz for 155.52MHz).

• Selectable CMOS, PECL and LVDS output.

• 12 to 25MHz crystal input.

• No external load capacitor or varicap required.

• Output Enable selector.

• Wide pull range (+/-190 ppm)

• 3.3V operation.

• Available in DIE (65 mil x 62 mil).

DESCRIPTIONS

The PLL502-10 is a monolithic low jitter and low

phase noise (-140dBc/Hz @ 10kHz offset) VCXO IC

Die, with CMOS, LVDS and PECL output, covering

the 750kHz to 400MHz output range. 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

thanks to frequency selector pads. This makes the

PLL502-10 ideal as a universal die for applications

ranging from ADSL to SONET.

BLOCK DIAGRAM

DIE CONFIGURATION

DIE SPECIFICATIONS

Name

Value

Size

62 x 65 mil

Reverse side

GND

Pad dimensions

80 micron x 80 micron

Thickness

10 mil

OUTPUT SELECTION AND ENABLE

Pad #18

OUTSEL1

Pad #25

OUTSEL0

Selected Output

0

0

High Drive CMOS

0

1

Standard CMOS

1

0

PECL

1

1

LVDS

OE_SELECT

(Pad #9)

OE_CTRL

(Pad #30)

State

0 (Default)

Output enabled

0

1

Tri-state

0

Tri-state

1 (Default)

1 (Default)

Output enabled

Pad #9:

Bond to GND to set to “0”, bond to VDD to set to “1”

Pad #30: Logical states defined by PECL levels if OE_SELECT (pad #9) is “0”

Logical states defined by CMOS levels if OE_SELECT is “1”

18

19

20

21

23

25

7

13

10

26

29

31

Y

X

(0,0)

(1550,1475)

65 mil

24

22

17

16

15

14

12

11

9

8

6

1

2

3

4

5

27

28

30

Reference

Divider

Phase

Detector

Charge

Pump

Loop

Filter

VCO

VCO

Divider

XTAL

OSC

CLKBAR

OE

XIN

XOUT

CLK

VCON

VARICAP

+

SEL