ASL425
200-4000 MHz MMIC Amplifier
Frequency (MHz)
420
43
-9
-5
29.5
44
0.9
5
350
440
42
-9
-5
30
45
0.8
5
350
460
41
-8.5
-5
29.5
44.5
0.8
5
350
APPLICATION CIRCUIT
TETRA
420 ~ 460 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 +8 dBm/tone sepa-
rated by 1 MHz.
Schematic
Board Layout (FR4, 40x40 mm , 0.8T)
Vcc=5 V
2
D1=5.6V Zener
Diode
R2=8.2
W
C8=1
mF
C10=1
mF
C5=10 pF
C9=100 pF
C4=18 pF
L4=12 nH
C6=10 pF
C7=100 pF
L1=120 nH
(Coil Inductor)
L3=6.8 nH
C2=100 pF
RF IN
L5=68 nH
C1=100 pF
L2=39 nH
ASL425
4 mm
C3=12 pF
R1=6.2 kW
RF OUT
S-parameters & K-factor
50
0
40
-5
Gain (dB)
30
S11 (dB)
0
100
200
300
400
500
600
-10
20
-15
10
0
-20
0
100
200
300
400
500
600
Frequency (MHz)
10
5
Frequency (MHz)
5
4
Stability Factor
0
100
200
300
400
500
600
0
3
S22 (dB)
-5
2
-10
1
-15
0
0
500
1000
1500
2000
2500
3000
3500
Frequency (MHz)
Frequency (MHz)
6/11
ASB Inc.
·
sales@asb.co.kr
·
Tel: +82-42-528-7223
January 2011
ASB [ ADVANCED SEMICONDUCTOR BUSINESS INC. ]
