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MPS6521 Datasheet(PDF) 3 Page - ON Semiconductor

Part # MPS6521
Description  Amplifier Transistors
PDF  11 Pages
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

MPS6521 Datasheet(HTML) 3 Page - ON Semiconductor

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MPS6521 (NPN)
MPS6523 (PNP)
http://onsemi.com
3
TYPICAL NOISE CHARACTERISTICS
(VCE = 5.0 Vdc, TA = 25°C)
Figure 3. Noise Voltage
f, FREQUENCY (Hz)
5.0
7.0
10
20
3.0
Figure 4. Noise Current
f, FREQUENCY (Hz)
2.0
10
20
50
100
200
500
1k
2k
5k
10k
100
50
20
10
5.0
2.0
1.0
0.5
0.2
0.1
BANDWIDTH = 1.0 Hz
RS = 0
IC = 1.0 mA
100 mA
30 mA
BANDWIDTH = 1.0 Hz
RS ≈∞
10 mA
300 mA
IC = 1.0 mA
300 mA
100 mA
30 mA
10 mA
10
20
50
100
200
500
1k
2k
5k
10k
NPN
MPS6521
NOISE FIGURE CONTOURS
(VCE = 5.0 Vdc, TA = 25°C)
Figure 5. Narrow Band, 100 Hz
IC, COLLECTOR CURRENT (mA)
500k
Figure 6. Narrow Band, 1.0 kHz
IC, COLLECTOR CURRENT (mA)
10
2.0 dB
BANDWIDTH = 1.0 Hz
Figure 7. Wideband
IC, COLLECTOR CURRENT (mA)
10
10 Hz to 15.7 kHz
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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