MMBT2484LT1 Datasheet, PDF (3/4 Pages) Motorola, Inc – Low Noise Transistor

LESHAN RADIO COMPANY, LTD.
NOISE CHARACTERISTICS
(V CE = 5.0 Vdc, T A = 25°C)
MMBT2484LT1
30
BANDWIDTH = 1.0 Hz
20
I C=10 mA
RS~~ 0
NOISE VOLTAGE
30
BANDWIDTH = 1.0 Hz
20
RS ^~~ 0
3.0 mA
10
7.0 ^{1.0 mA}
5.0
f = 10 Hz
10
100 Hz
7.0
1.0 kHz
10 kHz
5.0
3.0
10 20
300µA
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 0.05 0.1 0.2
100 kHz
0.5 1.0 2.0
5.0 10
I C , COLLECTOR CURRENT (mA)
Figure 3. Effects of Collector Current
10
7.0
BANDWIDTH = 1.0 Hz
5.0
I C = 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 20
50 100
10 µA
200 500 1 k
30 µA
2 k 5 k 10 k 20 k
50 k 100 k
f, FREQUENCY (Hz)
Figure 4. Noise Current
20
16
BANDWIDTH = 10 Hz to 15.7 kHz
12
I C = 1.0 mA
8.0
500 mA
100 mA
4.0
10 mA
0
10 20 50 100 200 500 1 k 2 k 5 k 10 k 20 k 50 k 100 k
R S , SOURCE RESISTANCE (OHMS)
Figure 5. Wideband Noise Figure
100 Hz NOISE DATA
10
7.0 _{BANDWIDTH = 1.0 Hz}
5.0
I C = 10 mA
3.0
300 µA
2.0
100 µA
1.0
30 µA
0.7
10 µA
0.5
3.0 µA
0.3
1.0 µA
0.2
0.1
10 20
50 100 200 500 1 k 2 k 5 k 10 k 20 k 50 k 100 k
R S , SOURCE RESISTANCE (OHMS)
Figure 6. Total Noise Voltage
20
16
I C = 10 mA
3.0 mA
1.0 mA
12
300 µA
8.0
100 µA
4.0
BANDWIDTH = 1.0 Hz
0
30 µA _{10 µA}
10 20 50 100 200 500 1 k 2 k 5 k 10 k 20 k 50 k 100 k
R S , SOURCE RESISTANCE (OHMS)
Figure 7. Noise Figure
O7–3/4