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

September 2011

ASX423

100-4500 MHz MMIC Amplifier

1) OIP3 is measured with two tones at an output power of +7 dBm/tone sepa-

rated by 1 MHz.

Board Layout (FR4, 40x40 mm

Schematic

S-parameters & K-factor

APPLICATION CIRCUIT

TETRA

380 ~ 500 MHz

+5 V

Frequency (MHz)

380

440

500

Magnitude S21 (dB)

34

36.5

34

Magnitude S11 (dB)

-10

-11

-11

Magnitude S22 (dB)

-5

-6

-6

Output P1dB (dBm)

29

29.5

29

Output IP3

38

40

41

Noise Figure (dB)

3.7

3.4

3.4

Device Voltage (V)

5

5

5

Current (mA)

400

400

400

C1=100 pF

Vcc=5 V

RF IN

RF OUT

C6=100 pF

ASX423

D1=5.6V

Zener Diode

L1=82 nH

(Coil Inductor)

C2=100 pF

C4=82 pF

L5=56 nH

C5=10 pF

C7=1 mF

C8=100 pF

C9=1 mF

L2=47 nH

C3=10 pF

L4=15 nH

R1=180 W

4 mm

L3=6.8 nH

2 mm

0

100

200

300

400

500

600

0

10

20

30

40

50

Frequency (MHz)

0

100

200

300

400

500

600

-15

-10

-5

0

5

10

Frequency (MHz)

0

100

200

300

400

500

600

-25

-20

-15

-10

-5

0

Frequency (MHz)

0

500

1000

1500

2000

2500

3000

3500

0

1

2

3

4

5

Frequency (MHz)