AST54S_17 Datasheet, PDF (5/26 Pages) Advanced Semiconductor Business Inc. – High Gain, Low Noise Amplifier

AST54S
High Gain, Low Noise Amplifier
APPLICATION CIRCUIT
GPS,GLONASS,Galileo,Compass
1559 ~ 1610 MHz
+3 V, 18 mA
Schematic
Parameter
Symbol Test Conditions MIN.
Power Gain
Gp
F = 1575 MHz
Noise Figure
NF
F = 1575 MHz
Input Return Loss
RLin
F = 1575 MHz
Output Return Loss
RLout
F = 1575 MHz
1 dB Gain Compression
Output Power
3^rd Intercept Point
Output Power¹⁾
Circuit Current
Po(1dB)
OIP3
Id
F = 1575 MHz
F = 1575 MHz
F = 1575 MHz
Non-RF
1) OIP3 is measured with two tones at an output power of +4 dBm/tone separated by 1MHz.
TYP. MAX. Unit
14.5
dB
0.5
dB
-18
dB
-10
dB
17.5
dBm
28
dBm
18
mA
Board Layout (FR4, 23x13 mm², 0.8T)
Top
VDD
RF IN
C4=1 nF
R1=820 
R3=10 
C5=1 uF
C1=100 pF
R2=5.1 k
L1=3.9 nH
*P1
C3=0.75 pF
*P1
AST54S
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: 2.0 mm, Width: 0.3 mm
2) Gain and S11 are in trade-off and varied with the length of P1
S-parameters & K-factor
5
0
-5
-10
-15
-20
-25
-30
0
5
500
1000
1500
2000
2500
3000
Frequency (MHz)
20
15
10
5
0
0
500
1000
1500
2000
2500
3000
Frequency (MHz)
5
0
4
-5
3
-10
2
-15
1
5/26
-20
0
500
1000
1500
2000
2500
3000
Frequency (MHz)
0
0
500
1000
1500
2000
2500
3000
Frequency (MHz)
ASB Inc.  [e-mail]  Tel: [phone]
April 2017