PCS3P7303A

Rev. 3 | Page 2 of 10 | www.onsemi.com

XIN / CLKIN

FS

1

2

3

4

5

6

7

8

ModOUT

SSEXTR

VDD

GND

MR

PCS3P7303A

XOUT

Pin Configuration

Pin Description

Pin #

Pin Name

Pin Type

Description

1

XIN / CLKIN

I

Crystal connection or External reference clock input.

2

XOUT

O

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

3

FS

I

Frequency Select. Pull LOW to select Low Frequency range. Selects High Frequency

range when pulled HIGH. Has an internal pull-up resistor. (See Frequency Selection

table for details.)

4

GND

P

Ground.

5

ModOUT

O

Buffered Modulated clock output.

6

MR

I

Modulation Rate Select. When LOW selects Low Modulation Rate.

Selects High Modulation Rate when pulled HIGH. Has an internal pull-down resistor.

7

SSEXTR

I

Analog Deviation Selection through external resistor to GND.

8

VDD

P

2.5V / 3.3V supply Voltage.

Frequency Selection Table

VDD (V)

FS

Frequency (MHz)

2.5

0

10-35

1

30-70

3.3

0

10-40

1

30-80