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參數(shù)資料
| 型號： | LMBT5087LT1 |
| 廠商： | 樂山無線電股份有限公司 |
| 英文描述： | Low Noise Transistor |
| 中文描述： | 低噪聲晶體管 |
| 文件頁數(shù)： | 3/6頁 |
| 文件大?。?/td> | 150K |
| 代理商： | LMBT5087LT1 |
LESHAN RADIO COMPANY, LTD.
M17–3/6
Noise Figure is Defined as:
NF = 20 log
10
(
–––––––––––––––)
1/ 2
e
n
= Noise Voltage of the Transistor referred to the input. (Figure 3)
I
n
= Noise Current of the Transistor referred to the input. (Figure 4)
K
= Boltzman’s Constant (1.38 x 10
–23
j/°K)
T
= Temperature of the Source Resistance (°K)
R
s
= Source Resistance (
)
n
S
n
S
2
L
MBT5087LT1
TYPICAL NOISE CHARACTERISTICS
(V
CE
= – 5.0 Vdc, T
A
= 25°C)
f, FREQUENCY (Hz)
Figure 1. Noise Voltage
f, FREQUENCY (Hz)
Figure 2. Noise Current
I
C
, COLLECTOR CURRENT (
μ
A)
Figure 3. Narrow Band, 100 Hz
I
C
, COLLECTOR CURRENT (
μ
A)
Figure 5. Wideband
I
C
, COLLECTOR CURRENT (
μ
A)
Figure 4. Narrow Band, 1.0 kHz
e
n
BANDWIDTH = 1.0 Hz
R
S
~
0
I
C
=10
μ
A
100
μ
A
300
μ
A
30
μ
A
1.0mA
I
BANDWIDTH = 1.0 Hz
R
S
~
I
C
=1.0mA
300
μ
A
100
μ
A
30
μ
A
BANDWIDTH = 1.0 Hz
BANDWIDTH = 1.0 Hz
NOISE FIGURE CONTOURS
(V
CE
= – 5.0 Vdc, T
A
= 25°C)
R
)
R
)
R
)
10
7.0
5.0
3.0
2.0
1.0
10
20
50
100
200
500
1.0k
2.0k
5.0k
10k
10
20
50
100
200
500
1.0k
2.0k
5.0k
10k
10.0
7.0
5.0
3.0
2.0
1.0
0.7
0.5
0.3
0.2
0.1
1.0M
500k
200k
100k
50k
20k
10k
5.0k
2.0k
1.0k
500
200
100
10
20
30
50
70
100
200
300
500
700 1.0K
10
20
30
50
70
100
200
300
500
700 1.0K
10
20
30
50
70
100
200
300
500
700 1.0K
0.5 dB
1.0 dB
2.0dB
3.0 dB
5.0 dB
1.0dB
2.0 dB
3.0 dB
5.0 dB
0.5dB
1.0dB
2.0dB
3.0 dB
5.0 dB
10 Hz to 15.7kHz
10
μ
A
0.5 dB
1.0M
500k
200k
100k
50k
20k
10k
5.0k
2.0k
1.0k
500
200
100
1.0M
500k
200k
100k
50k
20k
10k
5.0k
2.0k
1.0k
500
200
100
8
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