MMBT2484LT1 Datasheet, PDF (3/6 Pages) Motorola, Inc – Low Noise Transistor

NOISE CHARACTERISTICS
(VCE = 5.0 Vdc, TA = 25°C)
30
BANDWIDTH = 1.0 Hz
20
IC = 10 mA
RS ≈ 0
NOISE VOLTAGE
30
20
BANDWIDTH = 1.0 Hz
RS ≈ 0
MMBT2484LT1
3.0 mA
10
1.0 mA
7.0
5.0
f = 10 Hz
10
100 Hz
7.0
10 kHz
1.0 kHz
5.0
3.0
10 20
300 µA
50 100 200 500 1 k 2 k 5 k 10 k 20 k 50 k 100 k
f, FREQUENCY (Hz)
Figure 2. Effects of Frequency
3.0
0.01 0.02
100 kHz
0.05 0.1 0.2 0.5 1.0 2.0
IC, COLLECTOR CURRENT (mA)
5.0 10
Figure 3. Effects of Collector Current
10
7.0
BANDWIDTH = 1.0 Hz
5.0
IC = 10 mA
3.0
2.0
3.0 mA
1.0
1.0 mA
0.7
0.5
300 µA
0.3
100 µA
0.2
RS ≈ 0
0.1
10 µA
30 µA
10 20 50 100 200 500 1 k 2 k 5 k 10 k 20 k
f, FREQUENCY (Hz)
50 k 100 k
Figure 4. Noise Current
20
16
BANDWIDTH = 10 Hz to 15.7 kHz
12
IC = 1.0 mA
8.0
500 µA
100 µA
4.0
10 µA
0
10 20
50 100 200 500 1 k 2 k 5 k 10 k 20 k 50 k 100 k
RS, SOURCE RESISTANCE (OHMS)
Figure 5. Wideband Noise Figure
100 Hz NOISE DATA
300
20
200 BANDWIDTH = 1.0 Hz
IC = 10 mA
100
100 µA
16
70
3.0 mA
50
12
1.0 mA
30
300 µA
20
30 µA
8.0
IC = 10 mA
3.0 mA
1.0 mA
300 µA
10
7.0
5.0
3.0
10 20
10 µA
50 100 200 500 1 k 2 k 5 k 10 k 20 k 50 k 100 k
RS, SOURCE RESISTANCE (OHMS)
100 µA
4.0
30 µA
10 µA
BANDWIDTH = 1.0 Hz
0
10 20 50 100 200 500 1 k 2 k 5 k 10 k 20 k 50 k 100 k
RS, SOURCE RESISTANCE (OHMS)
Figure 6. Total Noise Voltage
Figure 7. Noise Figure
Motorola Small–Signal Transistors, FETs and Diodes Device Data
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