AST54S_17 Datasheet, PDF (16/26 Pages) Advanced Semiconductor Business Inc. – High Gain, Low Noise Amplifier

APPLICATION CIRCUIT
WiMAX, LTE
2300 ~ 2700 MHz
+5 V
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 Unit
Gp
NF
RLin
RLout
Po(1dB)
OIP3
Id
dB
dB
dB
dB
dBm
dBm
mA
Frequency
2300
2700
13.6
12.3
0.60
0.65
-17
-18
-10
-10
18.5
19.5
32
33
40
40
1) OIP3 is measured with two tones at an output power of +4 dBm/tone separated by 1MHz.
Frequency
2300
2700
14.0
12.7
0.65
0.70
-18
-18
-10
-10
20.5
20.5
35
35
60
60
Schematic
RF IN
C4=1 nF
R1=820 
C1=22 pF
R2=5.1 k
L1=8.2 nH
*P1
C3=0.75 pF
*P1
AST54S
VDD
C5=1 uF
R3=43  @ 40mA
=27  @ 60mA
L2=15 nH
C2=22 pF RF OUT
C6=0.5 pF
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: 0.5 mm, Width: 0.3 mm
2) Gain and S11 are in trade-off and varied with the length of P1
S-parameters & K-factor
20
0
-5
15
-10
10
-15
5
-20
0
2200
0
2300
2400
2500
2600
Frequency (MHz)
2700
2800
-25
2200
5
2300
2400
2500
2600
Frequency (MHz)
2700
2800
4
-5
3
-10
2
-15
1
16/26
-20
2200
2300
2400
2500
2600
Frequency (MHz)
2700
2800
0
0
500
1000
1500
2000
2500
3000
3500
Frequency (MHz)
ASB Inc.  [e-mail]  Tel: [phone]
April 2017