參數(shù)資料
型號(hào): MPSA20RL1
廠商: ON SEMICONDUCTOR
元件分類: 小信號(hào)晶體管
英文描述: 100 mA, 40 V, NPN, Si, SMALL SIGNAL TRANSISTOR, TO-92
封裝: CASE 29-11, TO-226AA, 3 PIN
文件頁(yè)數(shù): 3/6頁(yè)
文件大?。?/td> 290K
代理商: MPSA20RL1
MPSA20
http://onsemi.com
871
NOISE FIGURE CONTOURS
(VCE = 5.0 Vdc, TA = 25°C)
Figure 5. Narrow Band, 100 Hz
IC, COLLECTOR CURRENT (A)
500k
Figure 6. Narrow Band, 1.0 kHz
IC, COLLECTOR CURRENT (A)
10
2.0 dB
BANDWIDTH = 1.0 Hz
R S
,SOURCE
RESIST
ANCE
(OHMS)
R S
,SOURCE
RESIST
ANCE
(OHMS)
Figure 7. Wideband
IC, COLLECTOR CURRENT (A)
10
10 Hz to 15.7 kHz
R S
,SOURCE
RESIST
ANCE
(OHMS)
Noise Figure is defined as:
NF
+ 20 log10
en2 ) 4KTRS ) In
2RS2
4KTRS
1 2
= Noise Voltage of the Transistor referred to the input. (Figure 3)
= Noise Current of the Transistor referred to the input. (Figure 4)
= Boltzman’s Constant (1.38 x 10–23 j/
°K)
= Temperature of the Source Resistance (
°K)
= Source Resistance (Ohms)
en
In
K
T
RS
3.0 dB 4.0 dB
6.0 dB
10 dB
50
100
200
500
1k
10k
5k
20k
50k
100k
200k
2k
20 30
50 70 100
200 300
500 700 1k
10
20 30
50 70 100
200 300
500 700 1k
500k
100
200
500
1k
10k
5k
20k
50k
100k
200k
2k
1M
500k
50
100
200
500
1k
10k
5k
20k
50k
100k
200k
2k
20 30
50 70 100
200 300
500 700 1k
BANDWIDTH = 1.0 Hz
1.0 dB
2.0 dB
3.0 dB
5.0 dB
8.0 dB
1.0 dB
2.0 dB
3.0 dB
5.0 dB
8.0 dB
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