ASX423
100-4500 MHz MMIC Amplifier
Frequency (MHz)
1920~1980
22.5
-11
-18
29.5
47
2.6
5
400
APPLICATION CIRCUIT
WCDMA Rx
1920 ~ 1980 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 +13 dBm/tone se-
parated by 1 MHz.
Schematic
Vcc=5 V
Board Layout (FR4, 40x40 mm , 0.8T)
2
D1=5.6V
Zener Diode
C7=1
mF
C9=1
mF
C5=1.2 pF
C8=100pF
C4=3.3 pF
L3=18 nH
C1=100 pF
L1=18 nH
ASX423
C6=100 pF
L2=39 nH
(Coil Inductor)
C2=100 pF OUT
RF
2 mm
C3=1.8 pF
RF IN
S-parameters & K-factor
30
0
25
-5
Gain (dB)
20
-10
15
S11 (dB)
-15
10
-20
5
0
1700
1800
1900
2000
2100
2200
-25
1700
1800
1900
2000
2100
2200
Frequency (MHz)
0
5
Frequency (MHz)
-5
4
Stability Factor
-10
3
S22 (dB)
-15
2
-20
1
-25
1700
0
1800
1900
2000
2100
2200
0
500
1000
1500
2000
2500
3000
3500
Frequency (MHz)
Frequency (MHz)
8/11
ASB Inc.
·
sales@asb.co.kr
·
Tel: +82-42-528-7223
September 2011