Analog Frequency Multiplier

VCXO Family of Products

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

www.phaselink.com

Rev.:03-22-05 Page 13

PACKAGE PIN DESCRIPTION AND ASSIGNMENT

2X AFM Package Pin Out

4X AFM Package Pin Out

PIN ASSIGNMENTS

Name

Pin#

Type Product

Description

OSCOFFSEL

1

I

2X & 4X

Set to “0” (GND) to choose to turn off the oscillator when outputs are disabled (OE). Default (no

connect) is OSC always on.

GNDOSC

2

P

2X & 4X

GND connection for oscillator circuitry.

VCON

3

I

2X & 4X

Control Voltage input. Use this pin to change the output frequency by varying the applied Control

Voltage.

XIN

4

I

2X & 4X

Input from crystal oscillator circuitry.

XOUT

5

O

2X & 4X

Output from crystal oscillator circuitry.

OECTRL

6

I

2X & 4X

Output Enable input (see "OE LOGIC SELECTION TABLE").

DNC

2X

Do Not Connect.

L4X

7

I

4X

External inductor connection. The inductor is recommended to be a high Q small

size 0402 or 0603 SMD component, and must be placed between L4X and adjacent

VDDOSC. Place inductor as close to the IC as possible to minimize parasitic effects

and to maintain inductor Q. This inductor is used with 4X AFMs.

GNDANA

2X

GND connection.

VDDOSC

8

P

4X

VDD connection for oscillator circuitry. VDDOSC should be separately decoupled from other

VDDs whenever possible.

GNDBUF

9

P

2X & 4X

GND connection for output buffer circuitry.

Q

10

O

2X & 4X

PECL/LVDS or CMOS output.

QBAR

11

O

2X & 4X

Complementary PECL/LVDS output or in phase CMOS.

VDDBUF

12

P

2X & 4X

VDD connection for output buffer circuitry. VDDBUF should be separately decoupled from other

VDDs whenever possible.

VDDANA

13

P

2X & 4X

VDD connection for analog circuitry. VDDANA should be separately decoupled from other VDDs

whenever possible.

OESEL

14

I

2X & 4X

Selector input to choose the OE control logic (see “OE SELECTION TABLE”.

VDDOSC

15

P

2X & 4X

VDD connection for oscillator circuitry. VDDOSC should be separately decoupled from other

VDDs whenever possible.

L2X

16

I

2X & 4X

External inductor connection. The inductor is recommended to be a high Q small

size 0402 or 0603 SMD component, and must be placed between L2X and adjacent

VDDOSC. Place inductor as close to the IC as possible to minimize parasitic effects

and to maintain inductor Q.

1

2

3

4

5

6

7

8

OSCOFFSEL

9

1

0

1

1

1

2

1

3

1

4

1

5

1

6

GNDOSC

VCON

XIN

XOUT

OECTRL

L4X

VDDOSC

L2X

VDDOSC

OESEL

VDDANA

VDDBUF

QBAR

Q

GNDBUF

P560-0X

VDDOSC

OECTRL

XOUT

L4X

12

3

4

12

11

10

9

13

14

15

16

8

7

6

5

OESEL

VDDANA

VDDOSC

L2X

1

2

3

4

5

6

7

8

OSCOFFSEL

9

1

0

1

1

1

2

1

3

1

4

1

5

1

6

GNDOSC

VCON

XIN

XOUT

OECTRL

DNC

GNDANA

L2X

VDDOSC

OESEL

VDDANA

VDDBUF

QBAR

Q

GNDBUF

P560-4X

GNDANA

OECTRL

XOUT

DNC

12

3

4

12

11

10

9

13

14

15

16

8

7

6

5

OESEL

VDDANA

VDDOSC

L2X