AST54S_17 Datasheet, PDF (8/26 Pages) Advanced Semiconductor Business Inc. – High Gain, Low Noise Amplifier

APPLICATION CIRCUIT
GPS,GLONASS,Galileo,Compass
1164 ~ 1620 MHz
+5 V, 40 mA
Schematic
AST54S
High Gain, Low Noise Amplifier
Parameter
Power Gain
Noise Figure
Input Return Loss
Output Return Loss
1 dB Gain Compression
Output Power
3^rd Intercept Point
Output Power¹⁾
Circuit Current
Symbol
Gp
NF
RLin
RLout
Po(1dB)
OIP3
Id
Unit
dB
dB
dB
dB
dBm
dBm
mA
Frequency (MHz)
1164 ~ 1300 1559 ~ 1620
17.4
15.2
0.45
0.45
-12
-10
-18
-18
17
18
30
32
40
40
1) OIP3 is measured with two tones at an output power of +0 dBm/tone separated by 1MHz.
Board Layout (FR4, 23x13 mm², 0.8T)
VDD
Top
C4=1 nF
R1=820  R3=43 
C5=1 uF
RF IN
C3=0.75 pF
C1=100 pF
R2=5.1 k
L1=6.8 nH
*P1
AST54S
*P1
L2=8.2 nH
C2=100 pF RF OUT
Bottom
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 mm, Width: 0.3 mm
2) Gain and S11 are in trade-off and varied with the length of P1
S-parameters & K-factor
25
0
-5
20
-10
15
-15
10
-20
5
-25
8/26
0
1000
0
-5
-10
-15
-20
-25
-30
-35
1000
1200
1400
Frequency (MHz)
1600
1800
-30
1000
1200
1400
Frequency (MHz)
1600
1800
1200
1400
Frequency (MHz)
1600
1800
10
9
8
7
6
5
4
3
2
1
0
0 1000 2000 3000 4000 5000 6000 7000 8000 9000
Frequency [MHz]
ASB Inc.  [e-mail]  Tel: [phone]
April 2017