ASL21X
Medium Gain, Low Noise GPS Amplifier
Frequency (MHz)
Magnitude S21 (dB)
1575
16.5
-6
-12
1.1
-20
-10
2.0
1.8
300
1.8
APPLICATION CIRCUIT
GPS
1575 MHz
+1.8 V / 2 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=6.8 nH
RF IN
ASL21X
VCTL
L2=9.1 nH
Hi: ON
Low: OFF (Power Save)
Board Layout (FR4, 20x20 mm , 0.8T)
NC
2
C1=0.5 pF
RF OUT
C2=0.1 uF
R1= 390
W
Vsupply
S-parameters & K-factor
25
0
20
-5
Gain (dB)
S11 (dB)
15
-10
10
-15
5
-20
0
1000
1200
1400
1600
1800
2000
-25
1000
1200
1400
1600
1800
2000
Frequency (MHz)
0
5
Frequency (MHz)
-5
4
Stability Factor
-10
3
S22 (dB)
-15
2
-20
1
-25
1000
0
1200
1400
1600
1800
2000
0
500
1000
1500
2000
2500
3000
3500
Frequency (MHz)
Frequency (MHz)
3/14
ASB Inc.
·
sales@asb.co.kr
·
Tel: +82-42-528-7223
July 2012
ASB [ ADVANCED SEMICONDUCTOR BUSINESS INC. ]
