ASL21X
Medium Gain, Low Noise GPS Amplifier
Frequency (MHz)
Magnitude S21 (dB)
2400 ~ 2500
20.5
-15
-10
0.8
-8
0
13
3.0
300
3.0
APPLICATION CIRCUIT
2400 ~ 2500 MHz
+3V / 13 mA
Magnitude S11 (dB)
Magnitude S22 (dB)
Noise Figure (dB)
Input IP3 (dBm)
1)
Output P1dB(dBm)
Supply Current (mA)
Supply Voltage (V)
Control Current (mA)
Control Voltage V
CTL
(V)
1)
IIP3 is measured with two tones at an input power of -40 dBm/tone
separated by 1MHz
Schematic
L1=3.9 nH
RF IN
ASL21X
VCTL
L2=4.3 nH
Hi: ON
Low: OFF (Power Save)
Board Layout (FR4, 20x20 mm , 0.8T)
2
C1=0.3 pF
RF OUT
C2=0.1 uF
Vsupply
S-parameters & K-factor
25
0
-5
20
-10
Gain (dB)
S11 (dB)
15
-15
10
-20
5
-25
0
1800
2000
2200
2400
2600
2800
3000
-30
1800
2000
2200
2400
2600
2800
3000
Frequency (MHz)
0
5
Frequency (MHz)
-5
4
Stability Factor
-10
3
S22 (dB)
-15
2
-20
1
-25
-30
1800
0
2000
2200
2400
2600
2800
3000
0
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
Frequency (MHz)
Frequency (MHz)
9/14
ASB Inc.
·
sales@asb.co.kr
·
Tel: +82-42-528-7223
July 2012
ASB [ ADVANCED SEMICONDUCTOR BUSINESS INC. ]
