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

September 2004

The Communications Edge

TM

AH31

High Dynamic Range IF Amplifier

Product Information

Typical Device Data

S-parameters (Vd = +5 V, Id = 150 mA, unmatched 50

Ω system).

• Measurements are shown for an unmatched packaged device with the data being de-embedded to the device leads.

• The amplifier requires a matching network at the input for proper operation. The amplifier is intrinsically well matched at the output and

ideally should “look” into 50

Ω. Any deviation from this can affect the linearity IP3 performance for the device.

0

0.5

1

1.5

2

2.5

3

Frequency (GHz)

S21 and Maximum Stable Gain

10

13

16

19

22

25

10.0

5.

0

3.

0

4.

0

-0

.2

-

0

.4

S11

Swp Max

3GHz

Swp Min

0.05GHz

10.0

5.

0

3.

0

4.

0

-0

.2

-

0

.

4

S22

Swp Max

3GHz

Swp Min

0.05GHz

Application Circuit PC Board Layout

Circuit Board Material: .014” FR-4, 4 layers (other layers added for rigidity), .062” total thickness, 1 oz copper

Microstrip line details: width = .024”, spacing = .036”

1 GHz

2 GHz

3 GHz

1 GHz

2 GHz

3 GHz

Maximum Stable Gain

S21