Data Sheet

BC517
http://onsemi.com
3
NOISE CHARACTERISTICS
(V
CE
= 5.0 Vdc, T
A
= 25°C)
Figure 2. Noise Voltage
f, FREQUENCY (Hz)
50
100
200
500
20
Figure 3. Noise Current
f, FREQUENCY (Hz)
Figure 4. Total Wideband Noise Voltage
R
S
, SOURCE RESISTANCE (kW)
Figure 5. Wideband Noise Figure
R
S
, SOURCE RESISTANCE (kW)
5.0
50
70
100
200
30
10
20
1.0
10
10
20 50 100 200 500 1k 2k 5k 10k 20k 50k 100k
2.0
1.0
0.7
0.5
0.3
0.2
0.1
0.07
0.05
0.03
0.02
BANDWIDTH = 1.0 Hz
R
S
≈ 0
I
C
= 1.0 mA
100 mA
10 mA
BANDWIDTH = 1.0 Hz
I
C
= 1.0 mA
100 mA
10 mA
e
n
, NOISE VOLTAGE (nV)
i
n
, NOISE CURRENT (pA)
2.0 5.0 10 20 50 100 200 500 1000
BANDWIDTH = 10 Hz TO 15.7 kHz
I
C
= 10 mA
100 mA
1.0 mA
8.0
10
12
14
6.0
0
4.0
1.0 2.0 5.0 10 20 50 100 200 500 1000
2.0
BANDWIDTH = 10 Hz TO 15.7 kHz
10 mA
100 mA
I
C
= 1.0 mA
V
T
, TOTAL WIDEBAND NOISE VOLTAGE (nV)
NF, NOISE FIGURE (dB)
10 20 50 100 200 500 1k 2k 5k 10k 20k 50k 100k