MRF448 Datasheet, PDF (3/5 Pages) Motorola, Inc – RF POWER TRANSISTOR NPN SILICON

400
f = 30 MHz
I_CQ = 250 mA
300
200
100
V_CC = 50 V
40 V
400
f = 30, 30.001 MHz
300
I_CQ = 250 mA
IMD = d3
200
100
IMD = -ā30 dB
-ā35 dB
00
4
8
12
16
20
P_in, INPUT POWER (WATTS)
Figure 2. Output Power versus Input Power
020
30
40
50
60
V_CC, SUPPLY VOLTAGE (VOLTS)
Figure 3. Output Power versus Supply Voltage
25
400
20
350
15
300
10
250
V_CC = 50 V
I_CQ = 250 mA
5
P_out = 250 W
200
0
2
4
7 10
15
f, FREQUENCY (MHz)
30
150 ₁
Figure 4. Power Gain versus Frequency
f = 30 MHz
I_CQ = 250 mA
V_CC = 50 V
T_C = 50°C
100°C
35
10
30 50
OUTPUT VSWR
Figure 5. RF SOAR (Class AB)
P_out versus Output VSWR
250
-ā25
V_CC = 30 V
200
-ā30
V_CC = 50 V
f = 30, 30.001 MHz
15 V
d₃
150
-ā35
100
d₅
-ā40
50
-ā45
0
0
5
10
15
20
-ā5025
I_C, COLLECTOR CURRENT (AMPS)
Figure 6. f_T versus Collector Current
75
125
175
225
275
P_out, OUTPUT POWER (WATTS PEP)
Figure 7. IMD versus P_out
3