ASX621
250-3000 MHz MMIC Amplifier
Frequency (MHz)
1920~1980
18
-14
-14
32.5
50
5.6
5
1150
APPLICATION CIRCUIT
WCDMA Rx
1920 ~ 1980 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 +14
dBm/tone separated by 1 MHz.
Schematic
Vcc=5 V
D1=5.6V
Zener Diode
C5=1
mF
C7=1
mF
C6=100pF
L1=27 nH C3=2.2 pF
(Coil Inductor)
RF IN
ASX621
3 mm
C1=2 pF
Board Layout (FR4, 40x40 mm , 0.8T)
2
*C3 shall be placed as close as
possible to the pin.
C4=100pF
L2=27 nH
(Coil Inductor)
C2=1.5 pF
RF OUT
L3=1.8 nH
S-parameters
25
0
20
-5
-10
15
Gain (dB)
S11 (dB)
-15
10
5
-40
o
c
25
o
c
85
o
c
-20
-25
-40
o
c
25
o
c
85
o
c
0
1700
1800
1900
2000
2100
2200
-30
1700
1800
1900
2000
2100
2200
Frequency (MHz)
0
5
Frequency (MHz)
-5
4
-10
Stability Factor
2200
3
S22 (dB)
-15
-20
-40
o
c
25
o
c
85
o
c
2
1
-25
1700
1800
1900
2000
2100
0
500
1000
1500
2000
2500
3000
3500
Frequency (MHz)
Frequency (MHz)
5/10
ASB Inc.
·
sales@asb.co.kr
·
Tel: +82-42-528-7223
February 2010
ASB [ ADVANCED SEMICONDUCTOR BUSINESS INC. ]
