Specifications and information are subject to change without notice

WJ Communications, Inc

• Phone 1-800-WJ1-4401 • FAX: 408-577-6621 • e-mail: sales@wj.com • Web site: www.wj.com

Page 3 of 6

January 2007

VG111

PCS/UMTS-band Variable Gain Amplifier

VG111-PCB1900 Application Circuit Performance (cont’d)

S21 vs. Frequency

Vctrl=0V (Minimum attenuation)

10

11

12

13

14

15

1700

1750

1800

1850

1900

1950

2000

Frequency (MHz)

-40°C

+25°C

+85°C

S11 vs. Frequency

Vctrl=0V (Minimum attenuation)

-20

-15

-10

-5

0

1700

1750

1800

1850

1900

1950

2000

Frequency (MHz)

-40°C

+25°C

+85°C

S22 vs. Frequency

Vctrl=0V (Minimum attenuation)

-20

-15

-10

-5

0

1700

1750

1800

1850

1900

1950

2000

Frequency (MHz)

-40°C

+25°C

+85°C

S21 vs. Frequency vs. Attenuation Setting

-20

-10

0

10

20

1700

1750

1800

1850

1900

1950

2000

Frequency (MHz)

0 dB Atten

5 dB Atten

10 dB Atten

15 dB Atten

20 dB Atten

25 dB Atten

S11 vs. Frequency vs. Attenuation Setting

-30

-25

-20

-15

-10

-5

0

1700

1750

1800

1850

1900

1950

2000

Frequency (MHz)

0 dB Atten

5 dB Atten

10 dB Atten

15 dB Atten

20 dB Atten

25 dB Atten

S22 vs. Frequency vs. Attenuation Setting

-30

-25

-20

-15

-10

-5

0

1700

1750

1800

1850

1900

1950

2000

Frequency (MHz)

0 dB Atten

5 dB Atten

10 dB Atten

15 dB Atten

20 dB Atten

25 dB Atten

P1dB vs. Frequency

Vctrl=0V (Minimum attenuation)

16

18

20

22

24

26

1880

1920

1960

2000

Frequency (MHz)

-40°C

+25°C

+85°C

Noise Figure vs. Frequency

Vctrl=0V (Minimum attenuation)

0

2

4

6

8

10

1700

1750

1800

1850

1900

1950

2000

Frequency (MHz)

-40°C

+25°C

+85°C