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

September 2012

ASF255

5-3000 MHz MMIC Amplifier

C1=1 mF

L1=330 nH

C2=1 mF

Vs=6 V

RF IN

RF OUT

C3=100 pF

C4=1 mF

ASF255

0

250

500

750

1000

0

5

10

15

20

25

30

35

Frequency (MHz)

0

250

500

750

1000

-30

-25

-20

-15

-10

-5

0

Frequency (MHz)

0

250

500

750

1000

-25

-20

-15

-10

-5

0

Frequency (MHz)

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

MHz.

Board Layout (FR4, 40x40 mm

Schematic

S-parameters & K-factor

APPLICATION CIRCUIT

Frequency (MHz)

70

150

300

450

900

Magnitude S21 (dB)

22.9

22.8

22.7

22.4

21.4

Magnitude S11 (dB)

-15

-18

-18

-15

-10

Magnitude S22 (dB)

-15

-20

-20

-18

-11

Output P1dB (dBm)

24

24.5

24.5

24.5

24.5

Output IP3

39.5

42.5

42

40.5

38.5

Noise Figure (dB)

2.4

2.4

2.5

2.5

2.5

Device Voltage (V)

6

6

6

6

6

Device Current (mA)

123

123

123

123

123

50 ~ 1000

+6 V

0

500

1000

1500

2000

2500

3000

3500

0

1

2

3

4

5

Frequency (MHz)