AST54S_17 Datasheet, PDF (9/26 Pages) Advanced Semiconductor Business Inc. – High Gain, Low Noise Amplifier

APPLICATION CIRCUIT
GPS,GLONASS,Galileo,Compass
1100 ~ 1700 MHz
+5 V, 15 mA
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)
1100 1400
17.6 15.8
0.55 0.50
-13
-14
-14
-14
1700
14.1
0.50
-14
-13
10
11
12
23
24
25
15
15
15
1) OIP3 is measured with two tones at an output power of –5 dBm/tone separated by 1MHz.
Schematic
VDD
RF IN
C4=1 nF
R1=820  R3=160  ^{C5=1 uF}
C1=100 pF
R2=5.1 k
L1=6.8 nH
*P1
C3=0.5 pF
*P1
AST54S
L2=27 nH
C2=100 pF RF OUT
R4=390 
C6=1 nF
L3=22 nH
Board Layout (FR4, 23x13 mm², 0.8T)
Top
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: 2.4mm Width: 0.3 mm
2) Gain and S11 are in trade-off and varied with the length of P1
S-parameters & K-factor
20
15
10
5
0
0
500
1000
1500
2000
2500
3000
Frequency (MHz)
5
5
0
-5
-10
-15
-20
-25
-30
0
5
500
1000
1500
2000
2500
3000
Frequency (MHz)
0
4
-5
3
-10
2
-15
1
9/26
-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