AST20S datasheet(4/41 Pages) ASB

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ASB Inc.

 sales@asb.co.kr  Tel: +82-42-528-7225

February 2017

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

Noise Figure

F = 900 MHz

0.6

Input Return Loss

RLin

F = 900 MHz

-13

Output Return Loss

RLout

F = 900 MHz

-15

1 dB Gain Compression

Output Power

Po(1dB)

F = 900 MHz

dBm

3rd Intercept Point

Output Power1)

OIP3

F = 900 MHz

dBm

Circuit Current

F = 900 MHz

Non-RF

Schematic

S-parameters & Noise Figure

APPLICATION CIRCUIT

GSM, CDMA

900 MHz

+5 V

Board Layout (FR4, 23x13 mm2, 0.8T)

Note: 1) The length of the strip line P1 is given as below at

the PCB with Er = 4.5 and T = 0.8 mm.

P1 Length: 2.0 mm, Width: 0.3 mm

2) Gain and S11 are in trade-off and varied with the length of P1

500

1000

1500

2000

2500

3000

3500

Frequency (MHz)

600

700

800

900

1000

1100

1200

Frequency (MHz)

-40

600

700

800

900

1000

1100

1200

-30

-25

-20

-15

-10

-5

Frequency (MHz)

-40

600

700

800

900

1000

1100

1200

-30

-25

-20

-15

-10

-5

Frequency (MHz)

-40

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