ASX521 Datasheet, PDF (4/12 Pages) Advanced Semiconductor Business Inc. – 250-3000 MHz MMIC Amplifier

ASX521
250-3000 MHz MMIC Amplifier
APPLICATION CIRCUIT
CDMA Tx
869 ~ 894 MHz
+5 V
Frequency (MHz)
869~894
Magnitude S21 (dB)
30.5
Magnitude S11 (dB)
-15
Magnitude S22 (dB)
-7.5
Output P1dB (dBm)
32
Output IP3¹⁾ (dBm)
47
Noise Figure (dB)
11
Device Voltage (V)
5
Current (mA)
870
1) OIP3 is measured with two tones at an output power of +16
dBm/tone separated by 1 MHz.
Schematic
Vcc=5 V
D1=5.6V
Zener Diode
C8=1 mF
C7=100pF
RF IN
R2=6.8 W
C4=12 pF
L2=56 nH
1.5 mm ^ASX521
C1=3.3 pF
6 mm ^{R1=15 W}
C6=1 mF
C5=100pF
L1=56 nH
(Coil Inductor)
RF OUT
7 mm
C2=100 pF
C3=7.5 pF
Board Layout (FR4, 40x40 mm², 0.8T)
S-parameters
35
30
25
20
15
10
600
700
800
900
1000
1100
1200
Frequency (MHz)
5
0
-5
-10
-15
600
700
800
900
1000
1100
1200
Frequency (MHz)
0
-5
-10
-15
-20
-25
600
700
800
900
1000
1100
1200
Frequency (MHz)
5
4
3
2
1
0
0
500
1000 1500 2000 2500 3000 3500
Frequency (MHz)
4/12
ASB Inc. · [e-mail] · Tel: [phone]
February 2010