ASX521 Datasheet, PDF (9/12 Pages) Advanced Semiconductor Business Inc. – 250-3000 MHz MMIC Amplifier

ASX521
250-3000 MHz MMIC Amplifier
APPLICATION CIRCUIT
WCDMA Tx
2110 ~ 2170 MHz
+5 V
Frequency (MHz)
2110~2170
Magnitude S21 (dB)
18
Magnitude S11 (dB)
-15
Magnitude S22 (dB)
-7
Output P1dB (dBm)
31.5
Output IP3¹⁾ (dBm)
48
Noise Figure (dB)
7.5
Device Voltage (V)
5
Current (mA)
870
1) OIP3 is measured with two tones at an output power of +15
dBm/tone separated by 1 MHz.
Schematic
Vcc=5 V
D1=5.6V
Zener Diode
C8=1 mF
C7=100pF
L2=33 nH _{C4=1.5 pF}
(Coil Inductor)
RF IN
R1=5.1 W
1 mm ^ASX521
C1=1.5 pF
C2=0.5 pF
C6=1 mF
C5=100pF
L1=18 nH
(Coil Inductor)
C3=1.2 pF _{RF OUT}
4.5 mm
L3=1.8 nH
Board Layout (FR4, 40x40 mm², 0.8T)
S-parameters
25
0
20
-5
15
-10
10
5
0
1900
2000
2100
2200
2300
2400
Frequency (MHz)
0
-5
-10
-15
-20
-25
1900
2000
2100
2200
2300
2400
Frequency (MHz)
-15
-20
-25
1900
2000
2100
2200
2300
2400
Frequency (MHz)
5
4
3
2
1
0
0
500
1000 1500 2000 2500 3000 3500
Frequency (MHz)
9/12
ASB Inc. · [e-mail] · Tel: [phone]
February 2010