ASF255
5-3000 MHz MMIC Amplifier
Frequency (MHz)
Magnitude S21 (dB)
70
22.2
-15.5
-15.5
21.5
37.5
2.2
4.5
90
150
22.1
-18
-20
22.0
40.0
2.2
4.5
90
300
21.9
-18
-20
22.0
40.5
2.3
4.5
90
450
21.7
-16
-20
22.0
38.0
2.3
4.5
90
900
20.8
-11
-13
21.0
36.0
2.3
4.5
90
APPLICATION CIRCUIT
50 ~ 1000
+4.5 V, 90 mA
Magnitude S11 (dB)
Magnitude S22 (dB)
Output P1dB (dBm)
Output IP3 (dBm)
Noise Figure (dB)
Device Voltage (V)
Device Current (mA)
1)
1) OIP3 is measured with two tones at an output power of +8 dBm/tone separated by 1
MHz.
Schematic
Vs=5 V
Board Layout (FR4, 40x40 mm , 0.8T)
R1=5.6
W
2
C4=1
mF
C3=100 pF
L1=330 nH
RF IN
C1=1
mF
ASF255
C2=1
mF
RF OUT
S-parameters & K-factor
30
0
25
-5
Gain (dB)
20
-10
15
S11 (dB)
0
200
400
600
800
1000
-15
10
-20
5
0
-25
0
200
400
600
800
1000
Frequency (MHz)
0
5
Frequency (MHz)
-5
4
-10
Stability Factor
3
S22 (dB)
-15
2
-20
1
-25
-30
0
0
200
400
600
800
1000
0
500
1000
1500
2000
2500
3000
3500
Frequency (MHz)
Frequency (MHz)
4/6
ASB Inc.
·
sales@asb.co.kr
·
Tel: +82-42-528-7223
September 2012