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

February 2010

ASX520

250-3000 MHz MMIC Amplifier

1) OIP3 is measured with two tones at an output power of +15 dBm/tone sepa-

rated by 1 MHz.

Board Layout (FR4, 40x40 mm

Schematic

S-parameters & K-factor

APPLICATION CIRCUIT

Frequency (MHz)

869~894

890~915

935~960

Magnitude S21 (dB)

31.5

31

29

Magnitude S11 (dB)

-15

-15

-14

Magnitude S22 (dB)

-10

-9

-7.5

Output P1dB (dBm)

32.5

33

33

Output IP3

47

48

48

Noise Figure (dB)

7.5

7.0

7.0

Device Voltage (V)

5

5

5

Current (mA)

650

650

650

CDMA Tx, GSM

869 ~ 960 MHz

+5 V

C1=68 pF

C3=68 pF

Vcc=5 V

RF IN

RF OUT

C7=100pF

C8=1 mF

ASX520

D1=5.6V

Zener Diode

L1=82 nH

(Coil Inductor)

C4=7.5 pF

C5=100 pF

C9=100pF

C10=1 mF

L2=100 nH

3 mm

C6=5.6 pF

5 mm

L3=2.7 nH

C2=1.5 pF

R1=3 W

0

500

1000

1500

2000

2500

3000

3500

0

1

2

3

4

5

Frequency (MHz)

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

-30

-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