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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 +13 dBm/tone se-

parated by 1 MHz.

Board Layout (FR4, 40x40 mm

Schematic

S-parameters & K-factor

APPLICATION CIRCUIT

WCDMA Rx

1920 ~ 1980 MHz

+5 V

Frequency (MHz)

1920~1980

Magnitude S21 (dB)

22.5

Magnitude S11 (dB)

-11

Magnitude S22 (dB)

-18

Output P1dB (dBm)

29.5

Output IP3

47

Noise Figure (dB)

2.6

Device Voltage (V)

5

Current (mA)

400

C1=100 pF

Vcc=5 V

RF IN

RF OUT

C6=100 pF

ASX423

D1=5.6V

Zener Diode

L2=39 nH

(Coil Inductor)

C2=100 pF

C4=3.3 pF

L3=18 nH

C5=1.2 pF

C7=1 mF

C8=100pF

C9=1 mF

L1=18 nH

C3=1.8 pF

2 mm

1700

1800

1900

2000

2100

2200

0

5

10

15

20

25

30

Frequency (MHz)

1700

1800

1900

2000

2100

2200

-25

-20

-15

-10

-5

0

Frequency (MHz)

1700

1800

1900

2000

2100

2200

-25

-20

-15

-10

-5

0

Frequency (MHz)

0

500

1000

1500

2000

2500

3000

3500

0

1

2

3

4

5

Frequency (MHz)