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

January 2011

ASL425

200-4000 MHz MMIC Amplifier

1) OIP3 is measured with two tones at an output power of +9 dBm/tone sepa-

rated by 1 MHz.

Board Layout (FR4, 40x40 mm

Schematic

S-parameters & K-factor

APPLICATION CIRCUIT

TETRA

460 ~ 500 MHz

+5 V

Frequency (MHz)

460

480

500

Magnitude S21 (dB)

40

39

38.5

Magnitude S11 (dB)

-11

-10

-10

Magnitude S22 (dB)

-7

-8

-8

Output P1dB (dBm)

30

30

29.5

Output IP3

44.5

45

44.5

Noise Figure (dB)

1.8

1.9

1.95

Device Voltage (V)

5

5

5

Current (mA)

350

350

350

C1=100 pF

Vcc=5 V

RF IN

RF OUT

C6=100 pF

ASL425

D1=5.6V Zener

Diode

L1=120 nH

(Coil Inductor)

C2=39 pF

C4=18 pF

L5=56 nH

C5=4 pF

C7=1 mF

C8=100 pF

C9=1 mF

L2=27 nH

C3=12 pF

4 mm

L4=15 nH

R1=220 W

L3=3.3 nH

R2=6.2 kW

R3=8.2 W

0

100

200

300

400

500

600

0

10

20

30

40

50

Frequency (MHz)

0

100

200

300

400

500

600

-20

-15

-10

-5

0

Frequency (MHz)

0

100

200

300

400

500

600

-15

-10

-5

0

5

10

Frequency (MHz)

0

500

1000

1500

2000

2500

3000

3500

0

1

2

3

4

5

Frequency (MHz)