參數(shù)資料
型號: ARF448B
廠商: Advanced Power Technology Ltd.
英文描述: N-CHANNEL ENHANCEMENT MODE
中文描述: N溝道增強模式
文件頁數(shù): 3/4頁
文件大?。?/td> 57K
代理商: ARF448B
0
40
30
20
10
0
0
60
120
180
240
300
300
240
180
120
60
0
Freq. (MHz)
Z
in
-
gate shunted by 25
Z
OL
-
conjugate of optimum load impedance for 250W at 150V
Z
in
(
)
Z
OL
(
)
2.0
13.5
27.0
40.0
65.0
56.00 - j 06.0
37.00 - j 26.0
18.00 - j 25.0
9.90 - j 19.2
4.35 - j 11.4
20.90 - j 9.2
2.40 - j 6.8
0.57 - j 2.6
0.31 - j 0.5
0.44
+
j 1.9
G
P
,
(
P
, POWER OUT (WATTS)
Figure 8, Typical Common Source Amplifier Gain vs Power Out
17
16
15
14
13
T
, CASE TEMPERATURE (
°
C)
Figure 5, Typical Threshold Voltage vs Temperature
1.2
1.1
1.0
0.9
0.8
0.7
0.6
-50
-25
0
25
50
75
100
125
150
0
2
4
6
8
10
1
V
DS
, DRAIN-TO-SOURCE VOLTAGE (VOLTS)
Figure 6, Typical Output Characteristics
5
10
15
20
25
30
P
, POWER IN (WATTS)
Figure 7, Typical Power Out vs Power In
P
O
,
I
D
,
V
G
,
(
ARF448A/448B
5.5V
4.5V
5V
6V
VGS=8, 10 & 15V
Z
θ
J
,
°
C
10
-5
10
-4
10
-3
RECTANGULAR PULSE DURATION (SECONDS)
10
-2
10
-1
1.0
10
Figure 9, Typical Maximum Effective Transient Thermal Impedance, Junction-To-Case vs Pulse Duration
Class C
V
DD
= 150V
f = 40.68 MHz
Table 1 - Typical Class C Large Signal Inpu
t-O
utput Impedance
Class C
V
DD
= 150V
f = 40.68 MHz
6.5V
0.6
0.1
0.05
0.01
0.005
0.001
Note:
Duty Factor D = t1/t2
Peak TJ = PDM x Z
θ
JC + TC
t1
t2
P
0.1
SINGLE PULSE
0.02
0.05
0.2
D=0.5
0.01
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