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參數(shù)資料
| 型號(hào)： | 933978500112 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類(lèi)： | 小信號(hào)晶體管 |
| 英文描述： | UHF BAND, Si, N-CHANNEL, RF SMALL SIGNAL, MOSFET |
| 封裝： | CERAMIC PACKAGE-4 |
| 文件頁(yè)數(shù)： | 14/17頁(yè) |
| 文件大小： | 126K |
| 代理商： | 933978500112 |
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November 1992
6
Philips Semiconductors
Product specication
UHF power MOS transistor
BLF521
APPLICATION INFORMATION FOR CLASS-B OPERATION
Tamb =25 °C; RGS = 274 , unless otherwise specied.
RF performance in a common source class-B test circuit.
MODE OF OPERATION
f
(MHz)
VDS
(V)
IDQ
(mA)
PL
(W)
GP
(dB)
ηD
(%)
CW, class-B
500
12.5
10
2
> 10
typ. 13
> 50
typ. 60
Ruggedness in class-B operation
The BLF521 is capable of withstanding a load mismatch
corresponding to VSWR = 50:1 through all phases under
the following conditions:
VDS = 15.5 V; f = 500 MHz at rated output power.
Fig.9
Power gain and efficiency as functions of
load power, typical values.
Class-B operation; VDS = 12.5 V; IDQ = 10 mA;
ZL = 9.5 + j12.8; f = 500 MHz.
handbook, halfpage
0.5
1.5
PL (W)
Gp
(dB)
2.5
3.5
20
0
16
12
8
4
100
0
80
60
40
20
MDA480
Gp
ηD
(%)
ηD
Fig.10 Load power as a function of input power,
typical values.
Class-B operation; VDS = 12.5 V; IDQ = 20 mA;
ZL = 9.5 + j12.8; f = 175 MHz.
handbook, halfpage
0
0.2
1.0
4
3
1
0
2
0.4
0.6
0.8
MDA479
PL
(W)
PIN (W)
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