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 5

June 2005

VG101

Cellular-band Variable Gain Amplifier

Product Information

The Communications Edge

TM

VG101-PCB Application Circuit Performance (cont’d)

Gain vs. Pin 5 Attn. Control Current

-20

-15

-10

-5

0

5

10

15

20

0

5

10

15

20

25

Pin 5 Attenuation Control Current (mA)

+25°C

-40°C

+85°C

Normalized Gain vs. Pin 5 Control Current

0

5

10

15

20

25

30

35

40

0.1

1.0

10.0

100.0

Pin 5 Attenuation Control Current (mA)

+25°C

-40°C

+85°C

Noise Figure vs. Frequency

Vctrl=0V (Minimum attenuation)

0

2

4

6

8

10

700

750

800

850

900

950

1000

Frequency (MHz)

-40°C

+25°C

+85°C

S21 vs. Frequency

Vctrl=0V (Minimum attenuation), +25 °C

11

12

13

14

15

16

700

750

800

850

900

950

1000

Frequency (MHz)

S11, S22 vs. Frequency

Vctrl=0V (Minimum attenuation), +25 °C

-25

-20

-15

-10

-5

0

700

750

800

850

900

950

1000

Frequency (MHz)

S11

S22

P1dB vs. Frequency

Vctrl=0V (Minimum attenuation)

16

18

20

22

24

26

850

875

900

925

950

Frequency (MHz)

-40°C

+25°C

+85°C

S21 vs. Frequency vs. Control Voltage

-20

-10

0

10

20

750

800

850

900

950

1000

Frequency (MHz)

Vctrl=0V

Vctrl=1V

Vctrl=2V

Vctrl=3V

Vctrl=4V

Vctrl=4.5V

S11 vs. Frequency vs. Control Voltage

-25

-20

-15

-10

-5

0

750

800

850

900

950

1000

Frequency (MHz)

Vctrl=0V

Vctrl=1V

Vctrl=2V

Vctrl=3V

Vctrl=4V

Vctrl=4.5V

S22 vs. Frequency vs. Control Voltage

-25

-20

-15

-10

-5

0

750

800

850

900

950

1000

Frequency (MHz)

Vctrl=0V

Vctrl=1V

Vctrl=2V

Vctrl=3V

Vctrl=4V

Vctrl=4.5V

Vctrl, Vpin5 vs. Ictrl

0

1

2

3

4

5

6

0

5

10

15

20

Ictrl (mA)

0.0

0.5

1.0

1.5

2.0

2.5

3.0

Vctrl vs Ictrl

V5 vs Ictrl

Ictrl vs. Vpin5

0

2

4

6

8

10

12

14

16

18

0.0

0.5

1.0

1.5

2.0

2.5

3.0

Vpin5 (V)

Ictrl vs. Vctrl

0

2

4

6

8

10

12

14

16

18

012345

Vctrl (V)