AST54S_17 Datasheet, PDF (3/26 Pages) Advanced Semiconductor Business Inc. – High Gain, Low Noise Amplifier

AST54S
High Gain, Low Noise Amplifier
APPLICATION CIRCUIT
LTE 700
698 ~ 787 MHz
+5 V
Schematic
C4=1 nF
R1=820 
Parameter
Symbol Unit
Frequency
698
787
Power Gain
Gp
dB
19.0 18.0
Noise Figure
NF
dB
0.4
0.4
Input Return Loss
RLin
dB
-18
-18
Output Return Loss
1 dB Gain Compression
Output Power
3^rd Intercept Point
Output Power¹⁾
Circuit Current
RLout
dB
-10
-10
Po(1dB)
dBm 17
17
OIP3 dBm 30
31
Id
mA 40
40
1) OIP3 is measured with two tones at an output power of +4 dBm/tone separated by 1MHz.
Frequency
698
787
19.5 18.5
0.4
0.4
-18
-18
-10
-10
19
19
33
33
60
60
VDD
C5=1 uF
Board Layout (FR4, 23x13 mm², 0.8T)
Top
R3=43 @ 40mA
=27  @ 60mA
RF IN ^{L1=10 nH}
C1=100 pF
*P1
R2=5.1 k
L2=100 nH
*P1
AST54S
L3=22 nH
C2=100 pF RF OUT
R4=430 
C6=0.75 pF
*P1 Length : 3.0 mm width : 0.3mm
C3=1 nF
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: 3 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
20
15
10
5
0
200
400
600
800
Frequency (MHz)
0
-5
-10
-15
-20
3/26
-25
200
400
600
800
Frequency (MHz)
0
-5
-10
-15
-20
-25
1000
1200
1000
1200
-30
200
10
9
8
7
6
5
4
3
2
1
0
0
400
600
800
1000
Frequency (MHz)
500
1000
1500
2000
2500
Frequency [MHz]
ASB Inc.  [e-mail]  Tel: [phone]
1200
3000
April 2017