ASX423
100-4500 MHz MMIC Amplifier
Frequency (MHz)
902~928
32
-16
-20
29.5
45
2.3
5
400
APPLICATION CIRCUIT
RFID(USA)
902 ~ 928 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 +11 dBm/tone se-
parated by 1 MHz.
Schematic
Vs=5 V
Board Layout (FR4, 40x40 mm , 0.8T)
2
D1=5.6V
Zener Diode
C7=1
mF
C9=1
mF
C5=6 pF
C8=100pF C4=22 pF
RF IN
L3=33 nH
C1=100 pF
L1=33 nH
L4=3.9 nH
C6=100 pF
L2=82 nH
(Coil Inductor)
C2=100 pF
ASX423
RF OUT
8 mm
C3=3.9 pF
S-parameters & K-factor
40
0
30
-5
Gain (dB)
20
S11 (dB)
700
800
900
1000
1100
1200
-10
10
-15
0
600
-20
600
700
800
900
1000
1100
1200
Frequency (MHz)
0
5
Frequency (MHz)
-5
4
Stability Factor
-10
3
S22 (dB)
-15
2
-20
1
-25
0
-30
600
700
800
900
1000
1100
1200
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
September 2011
ASB [ ADVANCED SEMICONDUCTOR BUSINESS INC. ]
