AST54S_17 Datasheet, PDF (18/26 Pages) Advanced Semiconductor Business Inc. – High Gain, Low Noise Amplifier

AST54S
High Gain, Low Noise Amplifier
APPLICATION CIRCUIT
WiMAX
S11 < -18 dB
3300 MHz
+5 V
Schematic
Parameter
Symbol Test Conditions MIN.
Power Gain
Gp
F = 3.3 GHz
Noise Figure
NF
F = 3.3 GHz
Input Return Loss
RLin
F = 3.3 GHz
Output Return Loss
RLout
F = 3.3 GHz
1 dB Gain Compression
Output Power
3^rd Intercept Point
Output Power¹⁾
Circuit Current
Po(1dB)
OIP3
Id
F = 3.3 GHz
F = 3.3 GHz
F = 3.3 GHz
Non-RF
1) OIP3 is measured with two tones at an output power of +4 dBm/tone separated by 1MHz.
TYP. MAX. Unit
10
dB
0.8
dB
-18
dB
-16
dB
18
dBm
37.5
dBm
40
mA
Board Layout (FR4, 23x13 mm², 0.8T)
Top
VDD
C4=1 nF
R1=820 
R3=43 
C5=1 uF
RF IN
C1=3 pF
C3=0.5 pF
*P1
R2=5.1 k
L1=10 nH
*P1
AST54S
L2=8.2 nH
C2=22 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: 0.7 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
3000
0
3100
3200
3300
3400
Frequency (MHz)
3500
3600
-25
3000
5
3100
3200
3300
3400
Frequency (MHz)
3500
3600
-5
4
-10
3
-15
2
-20
1
18/26
-25
3000
3100
3200
3300
3400
Frequency (MHz)
3500
3600
0
0
500
1000
1500
2000
2500
3000
3500
Frequency (MHz)
ASB Inc.  [e-mail]  Tel: [phone]
April 2017