DATA SHEET • SKY73120-11 VCO

Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com

2

December 4, 2008 • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • 200777D

Band

Select

VTUNE

RF_OUT

S1174

Figure 2. SKY73120-11 Functional Block Diagram

Table 1. SKY73120-11 Signal Descriptions

Pin #

Name

Description

Pin #

Name

Description

1

GND

Ground

15

BS0

Band select 0

2

GND

Ground

16

BS1

Band select 1

3

GND

Ground

17

NC

No connection

4

GND

Ground

18

NC

No connection

5

GND

Ground

19

NC

No connection

6

GND

Ground

20

VDD

Power supply

7

GND

Ground

21

GND

Ground

8

GND

Ground

22

GND

Ground

9

GND

Ground

23

GND

Ground

10

VTUNE

Tune voltage

24

GND

Ground

11

GND

Ground

25

GND

Ground

12

GND

Ground

26

GND

Ground

13

GND

Ground

27

GND

Ground

14

GND

Ground

28

RF_OUT

RF output

Technical Description

The SKY73120-11 is a fully integrated VCO that includes

varactors, a band select module, oscillator, output buffer, and RF

balun. The output power from the RF balun is 0 dBm and the

output impedance is designed to be 50

Ω.

The band select module can be used to change the center

operation frequency of the VCO by controlling the BS1 and BS0

pin signals. This allows the total frequency range to be extended

by keeping the same Kv and phase noise performance. The

control logic for the BS1 and BS0 pins is shown in Table 2 and

illustrated in Figure 3.

The band select pins BS0 and BS1 contain 10 k

Ω pull-up

resistors.