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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 +0 dBm/tone separated by 1MHz.

Schematic

S-parameters & K-factor

APPLICATION CIRCUIT

SiriusXM

2338 MHz

+5 V

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: 1.5 mm, Width: 0.3 mm

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

Bottom

Top

Parameter

Symbol

Test Conditions

MIN.

TYP.

MAX.

Unit

Power Gain

F = 2338 MHz

12.2

dB

Noise Figure

NF

F = 2338 MHz

0.55

dB

Input Return Loss

F = 2338 MHz

-10

dB

Output Return Loss

F = 2338 MHz

-17

dB

1 dB Gain Compression

Output Power

F = 2338 MHz

17

dBm

OIP3

F = 2338 MHz

32

dBm

Circuit Current

F = 2338 MHz

Non-RF

35

mA

1000

1500

2000

2500

3000

3500

-30

-25

-20

-15

-10

-5

0

5

Frequency (MHz)

1000

1500

2000

2500

3000

3500

0

5

10

15

20

25

Frequency (MHz)

1000

1500

2000

2500

3000

3500

-30

-25

-20

-15

-10

-5

0

5

Frequency (MHz)

0

500

1000

1500

2000

2500

3000

3500

0

1

2

3

4

5

Frequency (MHz)

RF IN

RF OUT

C1=22 pF

L2=15 nH

AST54S

C3=1 nF

R1=820



C4=1

F

R2=5.1 k



C2=22 pF

L1=8.2 nH

*P1

*P1

R3=51

