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

September 2011

ASX420

250-3500 MHz MMIC Amplifier

1) OIP3 is measured with two tones at an output power of +12 dBm/tone separated

by 1 MHz.

Board Layout (FR4, 40x40 mm

Schematic

S-parameters & K-factor

APPLICATION CIRCUIT

Frequency (MHz)

824~849

869~894

890~915

Magnitude S21 (dB)

33

32

31.5

Magnitude S11 (dB)

-15

-15

-15

Magnitude S22 (dB)

-9

-8

-7

Output P1dB (dBm)

29.5

29.5

29.5

Output IP3

46.5

47

47

Noise Figure (dB)

7.0

7.5

6.8

Device Voltage (V)

5

5

5

Current (mA)

370

370

370

CDMA, GSM Rx

824 ~ 915 MHz

+5 V

0

500

1000

1500

2000

2500

3000

3500

0

1

2

3

4

5

Frequency (MHz)

C1=100 pF

C2=100 pF

Vcc=5 V

RF IN

RF OUT

C5=100pF

C6=1 mF

ASX420

D1=5.6V

Zener Diode

L1=82 nH

(Coil Inductor)

C3=6 pF

C4=100 pF

C7=100pF

C8=1 mF

L2=82 nH

1.5 mm

8 mm

R1=3 W

600

700

800

900

1000

1100

1200

0

10

20

30

40

50

Frequency (MHz)

-40

25

85

600

700

800

900

1000

1100

1200

-25

-20

-15

-10

-5

0

Frequency (MHz)

-40

25

85

600

700

800

900

1000

1100

1200

-20

-15

-10

-5

0

5

Frequency (MHz)

-40

25

85