http://www.prewell.com

2

CATV Amplifier

PW128

Products and product information are subject to change without notice. Version 0.3

0

100

200

300

400

500

600

40

50

60

70

80

90

100

25℃

Frequency (MHz)

CTB vs. Frequency

77 channels, +35dBmV/channel flat loading

0

100

200

300

400

500

600

30

40

50

60

70

80

90

25℃

Frequency (MHz)

CSO vs. Frequency

132 channels, +15dBmV/channel flat loading

0

150

300

450

600

750

900

2

3

4

5

6

7

8

25℃

Frequency (MHz)

NF vs. Frequency

NF vs. Frequency

0

150

300

450

600

750

900

-40

-30

-20

-10

0

10

20

S22

S11

Frequency (MHz)

S21

45 -1000MHz CATV Application Circuit

Recommended Bias Values

SupplyVoltage(V)

Size

5

3.9

0805

5.3

6.4

0805

6

12.3

0805

7

20.6

1210

8

28.9

1210

9

37.3

2010

10

45.6

2010

12

62.3

2512

1)Measurement forourdatasheet wasmade on1.6mmthickFR-4

Board.And75ohmmicrostrip line

0

100

200

300

400

500

600

0

5

10

15

20

25

30

25℃

Frequency (MHz)

P1dB vs Frequency

0

100

200

300

400

500

600

0

10

20

30

40

50

60

25℃

Frequency (MHz)

OIP3 vs Frequency

S-parameter

P1dB vs. Frequency

OIP3 vs. Frequency

CSO vs. Frequency

77 channels,35dBmV/channelflatloading

CTB vs. Frequency

77 channels,35dBmV/channelflatloading

Vcc=5V

R3

3.9Ω

C7 10nF

C8 1uF

L1

RFChoke

1)

C5

10nF

C6

10nF

R2

240Ω

C2

10nF

L2

RFChoke

1)

C10 1uF

C9 10nF

R4

3.9Ω

R1

240Ω

C3

10nF

C4

10nF

C1

10nF

RF IN

RF OUT

Prewell

PB1T1A

Prewell

PB1T1A

Vcc=5V