ASL19C
5-3000 MHz High Linearity LNA MMIC
Frequency (MHz)
1920
13.3
-18
-16
21.5
37.5
0.9
4.0
68
2170
12.3
-18
-12
21.5
37.5
0.9
4.0
68
APPLICATION CIRCUIT
WCDMA
1920 ~ 2170 MHz
+5 V
Magnitude S21 (dB)
Magnitude S11 (dB)
Magnitude S22 (dB)
Output P1dB (dBm)
Output IP3 (dBm)
Noise Figure (dB)
Device Voltage (V)
Current (mA)
1)
1) OIP3 is measured with two tones at an output power of +10 dBm/tone sep-
arated by 1 MHz.
Schematic
Vs=5 V
R
D
=15
W
Board Layout (FR4, 40x40 mm , 0.8T)
2
Note: A shunt R
B
is a bias resistor requisite to
operate ASL19C properly, while R
D
as a volt-
age drop resistor is added to apply 3.9 V to
the device. A user can easily REDUCE an
operating current by choosing different R
B
values with minimized loss only in OIP3 and
P1dB.
RF IN
L2=
39 nH
C1=100 pF
ASL19C
C3=
1.2 pF
3 mm
R
B
=
6.8 kW
R1=1.6
kW
C4=
2 pF
D1=5.6V
Zener Diode
C6=10 nF
C5=100 pF
L1=12 nH
C2=100 pF
RF OUT
S-parameters & K-factor
20
0
-5
15
Gain (dB)
-10
10
S11 (dB)
1800
1900
2000
2100
2200
2300
-15
-20
5
-25
0
1700
-30
1700
1800
1900
2000
2100
2200
2300
Frequency (MHz)
0
5
Frequency (MHz)
-5
4
-10
Stability Factor
1800
1900
2000
2100
2200
2300
3
S22 (dB)
-15
2
-20
-25
1
-30
1700
0
0
500
1000
1500
2000
2500
3000
3500
Frequency (MHz)
Frequency (MHz)
4/4
ASB Inc.
·
sales@asb.co.kr
·
Tel: +82-42-528-7223
September 2012