February 2007

P2384A

rev 0.2

Low Cost Frequency Multiplier

2 of 10

Notice: The information in this document is subject to change without notice.

Pin Configuration

Pin Description

Pin#

Pin Name

Type

Description

1

XIN

I

Crystal connection or external reference frequency input

2

XOUT

O

Crystal connection. If using an external reference, this pin must be left

unconnected.

3

PDB

I

Power-down control pin. Pull low to enable power-down mode. Connect directly to

VDD in normal operation and if not used.

4

LF

I

External loop filter for the PLL. (See Loop Filter Selection Table for value.)

5

VSS

P

Ground connection. Connect to system ground.

6

CLKOUT

O

Clock output.

7

FS0

I

Digital logic input used to select Input frequency range.

(See Input Frequency Selection.) This pin has an internal pull-up resistor.

8

VDD

P

Connect to +3.3 V.

Input Frequency Selection

FS0

Input (MHz)

Output Frequency Scaling (MHz)

0

20 to 38

80 to 152

1

39 to 78

156 to 312

1

2

3

4

5

6

7

8

CLKOUT

VDD

VSS

XIN

XOUT

PDB

LF

FS0

P2384A