參數(shù)資料
型號(hào): 934008580215
廠商: NXP SEMICONDUCTORS
元件分類(lèi): 小信號(hào)晶體管
英文描述: L BAND, Si, NPN, RF SMALL SIGNAL TRANSISTOR
封裝: PLASTIC, SST, 3 PIN
文件頁(yè)數(shù): 8/11頁(yè)
文件大?。?/td> 101K
代理商: 934008580215
December 1997
6
Philips Semiconductors
Product specication
NPN 5 GHz wideband transistor
BFT25A
Fig.10 Minimum noise figure as a function of
collector current.
VCE = 1 V.
handbook, halfpage
4
2
1
0
3
MCD145
101
110
F
(dB)
IC (mA)
f = 2 GHz
1 GHz
500 MHz
Fig.11 Minimum noise figure as a function of
frequency.
VCE = 1 V.
handbook, halfpage
4
2
1
0
3
MCD146
102
104
103
F
(dB)
f (MHz)
IC = 2 mA
1 mA
0.5 mA
Noise Parameters
f
(MHz)
VCE
(V)
IC
(mA)
500
1
Fmin
(dB)
Gamma (opt)
Rn/50
(mag)
(ang)
1.9
0.79
4
2.5
Fig.12 Noise circle figure.
Zo =50 .
Average gain parameter: MSG = 14.5 dB.
MCD108
0.2
0.5
1
2
5
0.2
0.5
1
2
10
5
10
0
0.2
0.5
1
2
5
10
+ j
j
stability
circle
pot. unst.
region
Fmin = 1.9 dB
ΓOPT
11 dB
6 dB
4 dB
MSG
14.5 dB
13 dB
2.5 dB
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