AST54S_17 Datasheet, PDF (22/26 Pages) Advanced Semiconductor Business Inc. – High Gain, Low Noise Amplifier

APPLICATION CIRCUIT
IF
20 ~ 108 MHz
+3.3 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)
dB
dB
dB
dB
dBm
Frequency (MHz)
20
108
18.3
18.2
1.1
1.1
-18
-18
-18
-18
7
7
OIP3 dBm 17
17
Id
mA 12
12
1) OIP3 is measured with two tones at an output power of +0 dBm/tone separated by 1MHz.
Schematic
VDD
RF IN
C4=1 nF
R1=820  R3=62 
C5=1 uF
C1=1 uF
R2=5.1 k
L1=8.2 uH
AST54S
L2=8.2 uH
C2=1 uF RF OUT
C6=1 nF
R3=510 
Board Layout (FR4, 28x16 mm², 0.8T)
Top
Bottom
S-parameters & K-factor
25
20
15
10
5
0
0
0
-5
-10
-15
-20
-25
-30
0
50
100
150
Frequency (MHz)
50
100
150
Frequency (MHz)
22/26
200
250
200
250
0
-5
-10
-15
-20
-25
-30
0
10
9
8
7
6
5
4
3
2
1
0
0
50
100
150
200
250
Frequency (MHz)
500
1000
1500
2000
2500
3000
Frequency [MHz]
ASB Inc.  [e-mail]  Tel: [phone]
April 2017