ASX420
250-3500 MHz MMIC Amplifier
Frequency (MHz)
1750~1780
22.5
-15
-15
29
46
7.1
5
370
1840~1870
22
-15
-18
29
46
7.2
5
370
APPLICATION CIRCUIT
PCS
1750 ~ 1870 MHz
+5 V
Magnitude S21 (dB)
Magnitude S11 (dB)
Magnitude S22 (dB)
Output P1dB (dBm)
Output IP3 (dBm)
1)
Noise Figure (dB)
Device Voltage (V)
Current (mA)
1) OIP3 is measured with two tones at an output power of +12
dBm/tone(1750~1780) and 15dBm/tone(1840~1870) separated by 1 MHz.
Schematic
Vcc=5 V
D1=5.6V
Zener Diode
C7=1
mF
C6=100pF
C9=1
mF
C8=100pF
RF IN
C5=1.5 pF
C4=3 pF
L2=22 nH
C1=56 pF
C3=2.2pF
1 mm
ASX420
L1=22 nH
(Coil Inductor)
C2=56 pF RF OUT
Board Layout (FR4, 40x40 mm , 0.8T)
2
R1=3
W
S-parameters & K-factor
30
0
25
-5
20
Gain (dB)
-10
15
S11 (dB)
1600
1700
1800
1900
2000
2100
-15
10
5
-20
0
1500
-25
1500
1600
1700
1800
1900
2000
2100
Frequency (MHz)
0
5
Frequency (MHz)
-5
4
-10
Stability Factor
1600
1700
1800
1900
2000
2100
3
S22 (dB)
-15
2
-20
-25
1
-30
1500
0
0
500
1000
1500
2000
2500
3000
3500
Frequency (MHz)
Frequency (MHz)
8/12
ASB Inc.
·
sales@asb.co.kr
·
Tel: +82-42-528-7223
September 2011
ASB [ ADVANCED SEMICONDUCTOR BUSINESS INC. ]
