AST20S datasheet(7/33 Pages) ASB

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ASB Inc.

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

August 2012

AST20S

High Gain, Low Noise Amplifier

1) OIP3 is measured with two tones at an output power of +4 dBm/tone separated by 1MHz.

Parameter

Symbol

Test Conditions

MIN.

TYP.

MAX.

Unit

Power Gain

F = 900 MHz

22.8

Noise Figure

F = 900 MHz

0.61

Input Return Loss

RLin

F = 900 MHz

-30

Output Return Loss

RLout

F = 900 MHz

-30

1 dB Gain Compression

Output Power

Po(1dB)

F = 900 MHz

20.2

dBm

rd Intercept Point

Output Power

OIP3

F = 900 MHz

33.3

dBm

Circuit Current

Icc

F = 900 MHz

Non-RF

Schematic

S-parameters & Noise Figure

APPLICATION CIRCUIT

Balanced Type

900 MHz

+5 V

Board Layout (FR4, 50x26 mm

2, 0.8T)

600

700

800

900

1000

1100

1200

-40

-30

-20

-10

S12

S22

S11

S21

Frequency [MHz]

freq (600.0MHz to 1.200GHz)

S11

S22

500

1000

1500

2000

2500

3000

3500

Frequency (MHz)

600

700

800

900

1000

1100

1200

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

1.1

1.2

Frequency (MHz)

* Coupler : Anaren, XC0900A-03

C1=100 pF

C3=100 pF

RF OUT

AST20S

C2=10 nF

RF IN

L2=47 nH

(Coil Inductor)

R2=750

C5=1 uF

VDD

R3=5.1 k

L1=27 nH

(Coil Inductor)

R4=47

C4=10 nF

*Coupler

R1=50

C6=100 pF

C8=100 pF

AST20S

C7=10 nF

L4=47 nH

(Coil Inductor)

R5=750

C10=1 uF

VDD

R6=5.1 k

L3=27 nH

(Coil Inductor)

R7=47

C9=10 nF

*Coupler

R8=50

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