AST54S datasheet(9/26 Pages) ASB

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ASB Inc.

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

April 2017

AST54S

High Gain, Low Noise Amplifier

1) OIP3 is measured with two tones at an output power of

–5 dBm/tone separated by 1MHz.

Schematic

S-parameters & K-factor

APPLICATION CIRCUIT

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: 2.4mm Width: 0.3 mm

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

Bottom

Top

Parameter

Symbol

Unit

Frequency (MHz)

1100

1400

1700

Power Gain

17.6

15.8

14.1

Noise Figure

0.55

0.50

Input Return Loss

RLin

-13

-14

Output Return Loss

RLout

-14

-13

1 dB Gain Compression

Output Power

Po(1dB)

dBm

3rd Intercept Point

Output Power1)

OIP3

dBm

Circuit Current

C1=100 pF

C2=100 pF

RF OUT

AST54S

C4=1 nF

RF IN

L2=27 nH

*P1

R1=820



C5=1 uF

*P1

VDD

R2=5.1 k



L1=6.8 nH

R3=160



C3=0.5 pF

R4=390



C6=1 nF

L3=22 nH

500

1000

1500

2000

2500

3000

Frequency (MHz)

500

1000

1500

2000

2500

3000

-30

-25

-20

-15

-10

-5

Frequency (MHz)

500

1000

1500

2000

2500

3000

-20

-15

-10

-5

Frequency (MHz)

500

1000

1500

2000

2500

3000

Frequency (MHz)

GPS,GLONASS,Galileo,Compass

1100 ~ 1700 MHz

+5 V, 15 mA

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