ASL425
200-4000 MHz MMIC Amplifier
Frequency (MHz)
824~849
34.5
-8
-13
28
43
1.0
5
350
869~894
34
-14
-14
29
45
1.0
APPLICATION CIRCUIT
CDMA
824 ~ 894 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 +10 dBm/tone se-
parated by 1 MHz.
Schematic
Vcc=5 V
Board Layout (FR4, 40x40 mm , 0.8T)
2
D1=5.6V
Zener Diode
R1=8.2
W
C8=1
mF
C7=100 pF
C6=5.6 pF
C9=100pF
RF IN
C5=18 pF
L3=33 nH
C1=100 pF
C3=3 pF
L2=33 nH
R2=6.2
kW
ASL425
C10=1
mF
L4=5.6 nH
L1=82 nH
(Coil Inductor)
C2=100 pF RF OUT
7 mm
C4=4 pF
S-parameters & K-factor
50
0
40
-5
Gain (dB)
30
-10
20
S11 (dB)
700
800
900
1000
1100
1200
-15
10
-20
0
600
-25
600
700
800
900
1000
1100
1200
Frequency (MHz)
0
5
Frequency (MHz)
-5
4
Stability Factor
700
800
900
1000
1100
1200
-10
3
S22 (dB)
-15
2
-20
1
-25
600
0
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
January 2011
ASB [ ADVANCED SEMICONDUCTOR BUSINESS INC. ]
