ASX521
250-3000 MHz MMIC Amplifier
Frequency (MHz)
2110~2170
18
-15
-7
31.5
48
7.5
5
870
APPLICATION CIRCUIT
WCDMA Tx
2110 ~ 2170 MHz
+5 V
Magnitude S21 (dB)
Magnitude S11 (dB)
Magnitude S22 (dB)
Output P1dB (dBm)
Output IP3
1)
(dBm)
Noise Figure (dB)
Device Voltage (V)
Current (mA)
1) OIP3 is measured with two tones at an output power of +15
dBm/tone separated by 1 MHz.
Schematic
Vcc=5 V
D1=5.6V
Zener Diode
C6=1
mF
C8=1
mF
C5=100pF
C7=100pF
L2=33 nH C4=1.5 pF
(Coil Inductor)
RF IN
R1=5.1
W
C1=1.5 pF
C2=0.5 pF
1 mm
ASX521
4.5 mm
L1=18 nH
(Coil Inductor)
C3=1.2 pF
RF OUT
Board Layout (FR4, 40x40 mm , 0.8T)
2
L3=1.8 nH
S-parameters
25
0
20
-5
15
-10
Gain (dB)
10
S11 (dB)
2000
2100
2200
2300
2400
-15
5
-20
0
1900
-25
1900
2000
2100
2200
2300
2400
Frequency (MHz)
0
5
Frequency (MHz)
-5
4
-10
Stability Factor
2000
2100
2200
2300
2400
3
S22 (dB)
-15
2
-20
1
-25
1900
0
0
500
1000
1500
2000
2500
3000
3500
Frequency (MHz)
Frequency (MHz)
9/12
ASB Inc.
·
sales@asb.co.kr
·
Tel: +82-42-528-7223
February 2010
ASB [ ADVANCED SEMICONDUCTOR BUSINESS INC. ]
