ASL19W Datasheet, PDF (14/19 Pages) Advanced Semiconductor Business Inc. – DC-3000 MHz High Linearity LNA MMIC

APPLICATION CIRCUIT
Low Noise
2300 ~ 2700
+5 V
ASL19W
DC-3000 MHz High Linearity LNA MMIC
Frequency (MHz)
2300
2500
2700
Magnitude S21 (dB)
12
11.5
11
Magnitude S11 (dB)
-18
-18
-16
Magnitude S22 (dB)
-17
-16
-14
Output P1dB (dBm)
22
22
22
Output IP3¹⁾ (dBm)
37.5
37.5
38
Noise Figure (dB)
1.0
1.1
1.1
Supply Voltage (V)
5
5
5
Current (mA)
73
73
73
1) OIP3 is measured with two tones at an output power of +10 dBm/tone sepa-
rated by 1 MHz.
Schematic
Vcc=5 V
Note: A shunt RB is a bias resistor requisite to
operate ASL19W properly, while RD as a
voltage drop resistor is added to apply 4.4 V
to the device. A user can easily REDUCE an
operating current by choosing different RB
values with minimized loss only in OIP3 and
P1dB.
RF IN
L2=39 nH
C1=100 pF _{2.5 mm}
C2=1 pF
RB =6.2
kΩ
ASL19W
RD=8.2 Ω
D1=5.6V
Zener Diode
C5=1 µF
C4=100 pF
L1=39 nH
C3=100 pF
RF OUT
Board Layout (FR4, 40x40 mm², 0.8T)
S-parameters & K-factor
20
0
-5
15
-10
10
-15
5
-20
0
2000
0
2200
2400
2600
Frequency (MHz)
2800
3000
-25
2000
5
2200
2400
2600
Frequency (MHz)
2800
3000
-5
4
-10
3
-15
-20
-25
2000
2200
2400
2600
Frequency (MHz)
2800
3000
2
1
0
0
500
1000
1500
2000
2500
3000
3500
Frequency (MHz)
14/19
ASB Inc. • [e-mail] • Tel: [phone]
February 2009