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 4 April 2006

AH22S

High Dynamic Range CATV Amplifier

Product Information

75

: Push-Pull Application Circuit

4 total layers (other layers added for rigidity), 1 oz copper

Typical RF Performance at 25

qC

Frequency

MHz

50

250

450

860

Gain

dB

11.3

11.1

11.1

11.1

Input R.L.

dB

10.6

10.4

11.6

15.8

Output R.L.

dB

17.1

15.4

15.4

18.2

CTB

dBc

-75

-74

-74

CSO

dBc

-73

-86

-77

XMOD

dBc

-63

-63

-63

Output P1dB

dBm

+25.9

+26

+25.5 +24.7

Output IP2

dBm

+79

+77

+77

+76

Output IP3

dBm

+43

+45

+42

+42

Noise Figure

dB

6.1

4.6

4.5

4.2

Device Current

mA

320

Device Voltage

V

+5

1. Balun, board, and connector losses have not been extracted, but typically account of

0.4 dB loss midband and 1.1 dB loss at 860 MHz.

2. CSO, CTB, & XMOD are measured at +39 dBmV/channel, 77 channels Flat Loading.

3. OIP2 is measured at f1 + f2 at 8 dBm / tone.

4. OIP3 is measured at 8 dBm / tone with 10 MHz spacing.

C=

ID=

1000 pF

C6

C=

ID=

1000 pF

C7

R=

ID=

560 Ohm

R1

R=

ID=

560 Ohm

R2

C=

ID=

100 pF

C3

CAP

C=

ID=

100 pF

C4

L=

ID=

470 nH

L4

L=

ID=

470 nH

L5

C=

ID=

1000 pF

C5

C=

ID=

1000 pF

C8

L=

ID=

5.6 nH

L2

L=

ID=

5.6 nH

L3

C=

ID=

1.5 pF

C1

C=

ID=

1.5 pF

C2

o

o

1 : n1

1

2

3

4

XFMR

ID=L1

o

o

1

:

n1

1

2

3

4

XFMR

ID=L6

+5 V

AH22S

+5 V

The transformers, L1 and L6, used on the WJ evaluation board are handwound baluns using these materials: 6

turns bifilar wire (MWS B2383211) around a ferrite core (TDK, H5C2-T3.1-1.3-1.3). An SMT transformer

(M/A Com ETC1-1-13) can also be used.

Gain

7

8

9

10

11

12

0

200

400

600

800

1000

Frequency (MHz)

Return Loss

-30

-25

-20

-15

-10

-5

0

0

200

400

600

800

1000

Frequency (MHz)

S11

S22

Noise Figure

2

3

4

5

6

7

0

200

400

600

800

1000

Frequency (MHz)

CSO, CTB, & XMOD

+39 dBmV / channel, 77 channel flat loading

-90

-80

-70

-60

-50

0

100

200

300

400

500

600

Frequency (MHz)

XMOD

CTB

CSO