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AST20S Datasheet(PDF) 17 Page - Advanced Semiconductor Business Inc.

Part # AST20S
Description  High Gain, Low Noise Amplifier
PDF  33 Pages
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Manufacturer  ASB [Advanced Semiconductor Business Inc.]
Direct Link  http://www.asb.co.kr
Logo ASB - Advanced Semiconductor Business Inc.

AST20S Datasheet(HTML) 17 Page - Advanced Semiconductor Business Inc.

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ASB Inc.
· sales@asb.co.kr · Tel: +82-42-528-7223
August 2012
AST20S
High Gain, Low Noise Amplifier
1) OIP3 is measured with two tones at an output power of +4 dBm/tone separated by 1MHz.
Schematic
S-parameters & Noise Figure
APPLICATION CIRCUIT
1200 ~ 1900 MHz
+5 V
Board Layout (FR4, 23x13 mm
2, 0.8T)
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: 0.75 mm, Width: 0.3 mm
2) Gain and S11 are in trade-off and varied with the length of P1
Parameter
Symbol
Unit
Frequency (MHz)
1200
1550
1900
Power Gain
Gp
dB
18.5
16.6
15.9
Noise Figure
NF
dB
0.6
0.6
0.7
Input Return Loss
RLin
dB
-9
-9
-10
Output Return Loss
RLout
dB
-14
-14
-14
1 dB Gain Compression
Output Power
Po(1dB)
dBm
17
17.5
18
3
rd Intercept Point
Output Power
1)
OIP3
dBm
31
32
33
Circuit Current
Icc
mA
48
48
48
C1=100 pF
C3=6.8 pF
RF OUT
AST20S
C4=10 nF
RF IN
L2=10 nH
*P1
R1=750
W
C5=1 uF
*P1
VDD
R2=5.1 k
W
L1=10 nH
(Coil Inductor)
C2=0.5 pF
R3=39
W
freq (800.0MHz to 2.200GHz)
S11 S22
800
1000
1200
1400
1600
1800
2000
2200
-40
-30
-20
-10
0
10
20
30
S12
S22
S11
S21
Frequency [MHz]
0
500
1000
1500
2000
2500
3000
3500
0
1
2
3
4
5
Frequency (MHz)
800
1000
1200
1400
1600
1800
2000
2200
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
Frequency (MHz)
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