AST163 Datasheet, PDF (7/8 Pages) Advanced Semiconductor Business Inc. – High Gain, Low Noise Amplifier

APPLICATION CIRCUIT
1710 ~ 1880 MHz
+5 V / 35 mA
Schematic
AST163
High Gain, Low Noise Amplifier
Parameter
Symbol Unit
Frequency [MHz]
1710~1880
Power Gain
G_p
dB
17.5
Noise Figure
NF
dB
0.65
Input Return Loss
RL_in
dB
-10
Output Return Loss
1 dB Gain Compression
Output Power
3^rd Intercept Point
Output Power¹⁾
Circuit Current
RL_out
P_o(1dB)
OIP3
I_cc
dB
dBm
dBm
mA
-8
16.5
28
35
1) OIP3 is measured with two tones at an output power of +0 dBm/tone separated by 1MHz.
Board Layout (FR4, 23x13 mm², 0.8T)
VDD
Top
RF IN
C3=10 nF
R1=750 W
R3=30 W
C4=1 uF
C1=100 pF
R2=5.1 kW
L1=4.7 nH
*P1
AST163
*P1
L2=8.2 nH
C2=100 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: 0.4 mm, Width: 0.3 mm
2) Gain and S11 are in trade-off and varied with the length of P1
S-parameters & K-factor
25
0
20
-5
15
-10
10
-15
5
0
1500
0
1600
1700
1800
1900
Frequency (MHz)
2000
2100
-20
1500
5
1600
1700
1800
1900
Frequency (MHz)
2000
2100
4
-5
3
-10
2
-15
1
-20
1500
1600
1700
1800
1900
Frequency (MHz)
2000
2100
0
0
500
1000
1500
2000
2500
3000
3500
Frequency (MHz)
7/8
ASB Inc. · [e-mail] · Tel: [phone]
July 2010