AST20S datasheet(30/33 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.

2) OIP2 is measured with two tones (100MHz, 800MHz) at an output power of +0 dBm/tone, 700MHz.

Parameter

Symbol

Unit

Frequency (MHz)

470

1500

2700

Power Gain

17.8

17.9

16.8

15.3

Noise Figure

1.2

1.1

1.2

1.3

Input Return Loss

RLin

-15

-6

-5

-9

Output Return Loss

RLout

-6

-7

-14

-16

1 dB Gain Compression

Output Power

Po(1dB)

dBm

15.4

16.4

19.5

rd Intercept Point

Output Power

OIP3

dBm

29.5

32.5

nd Intercept Point

Output Power

OIP2

dBm

38.5

Circuit Current

Icc

Schematic

S-parameters & Noise Figure

APPLICATION CIRCUIT

ONU, 50 ohm

70 ~ 2700 MHz

+5 V

Board Layout (FR4, 24x16 mm

2, 0.8T)

freq (70.00MHz to 2.700GHz)

S11

S22

500

1000

1500

2000

2500

3000

3500

-40

-30

-20

-10

S12

S22

S11

S21

Frequency [MHz]

500

1000

1500

2000

2500

3000

3500

Frequency (MHz)

500

1000

1500

2000

2500

3000

0.7

0.8

0.9

1.0

1.1

1.2

1.3

1.4

1.5

1.6

Frequency (MHz)

Bottom

C1=100 pF

C3=100 pF

RF OUT

AST20S

C5=10 nF

RF IN

R1=750

C6=1 uF

VDD

R2=5.1 k

L1=220 nH

(Coil Inductor)

R5=25

C2=1 pF

C4=100 pF R3=620

R4=39

L3=12 nH

L2=220 nH

(Coil Inductor)

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