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ASB Inc. · sales@asb.co.kr · Tel: +82-42-528-7223

September 2012

ASF255

5-3000 MHz MMIC Amplifier

1) OIP3 is measured with two tones at an output power of +8 dBm/tone separated by 1

MHz.

C1=1 mF

L1=330 nH

C2=1 mF

Vs=5 V

RF IN

RF OUT

C3=100 pF

C4=1 mF

ASF255

R1=5.6 W

0

200

400

600

800

1000

-30

-25

-20

-15

-10

-5

0

Frequency (MHz)

0

200

400

600

800

1000

0

5

10

15

20

25

30

Frequency (MHz)

0

200

400

600

800

1000

-25

-20

-15

-10

-5

0

Frequency (MHz)

Board Layout (FR4, 40x40 mm

Schematic

S-parameters & K-factor

APPLICATION CIRCUIT

Frequency (MHz)

70

150

300

450

900

Magnitude S21 (dB)

22.2

22.1

21.9

21.7

20.8

Magnitude S11 (dB)

-15.5

-18

-18

-16

-11

Magnitude S22 (dB)

-15.5

-20

-20

-20

-13

Output P1dB (dBm)

21.5

22.0

22.0

22.0

21.0

Output IP3

37.5

40.0

40.5

38.0

36.0

Noise Figure (dB)

2.2

2.2

2.3

2.3

2.3

Device Voltage (V)

4.5

4.5

4.5

4.5

4.5

Device Current (mA)

90

90

90

90

90

50 ~ 1000

+4.5 V, 90 mA

0

500

1000

1500

2000

2500

3000

3500

0

1

2

3

4

5

Frequency (MHz)