BCW69LT1 Motorola Inc, BCW69LT1 Datasheet - Page 3

• Manufacturer Part Number: BCW69LT1
• Description: General Purpose Transistors
• Manufacturer: Motorola Inc

Motorola Small–Signal Transistors, FETs and Diodes Device Data
1.0 M
500 k
200 k
100 k
1.0 M
500 k
200 k
100 k
5.0 k
2.0 k
1.0 k
5.0 k
2.0 k
1.0 k
7.0
5.0
3.0
2.0
1.0
50 k
20 k
10 k
50 k
20 k
10 k
10
200
500
100
500
200
100
10
10
10
1.0 mA
20
0.5 dB
20
20
Figure 3. Narrow Band, 100 Hz
50
30
30
Figure 1. Noise Voltage
I C , COLLECTOR CURRENT ( A)
I C , COLLECTOR CURRENT ( A)
100
Figure 5. Wideband
50 70 100
I C = 10 A
f, FREQUENCY (Hz)
50 70 100
0.5 dB
100 A
300 A
30 A
200
1.0 dB
500 1.0 k
BANDWIDTH = 1.0 Hz
200 300
200 300
BANDWIDTH = 1.0 Hz
TYPICAL NOISE CHARACTERISTICS
10 Hz to 15.7 kHz
R S 0
2.0 k
1.0 dB
NOISE FIGURE CONTOURS
2.0 dB
(V CE = – 5.0 Vdc, T A = 25 C)
(V CE = – 5.0 Vdc, T A = 25 C)
3.0 dB
2.0 dB
5.0 dB
500 700 1.0 k
500 700 1.0 k
3.0 dB
5.0 dB
5.0 k 10 k
1.0 M
500 k
200 k
100 k
Noise Figure is Defined as:
NF
e n
I n
K
T
R S
5.0 k
2.0 k
1.0 k
50 k
20 k
10 k
500
200
100
7.0
5.0
3.0
2.0
1.0
1.0
0.7
0.5
0.3
0.2
0.1
= 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)
+
10
10
20 log 10
20
20
Figure 4. Narrow Band, 1.0 kHz
e n 2
50
30
Figure 2. Noise Current
I C , COLLECTOR CURRENT ( A)
)
100
4KTR S
50 70 100
f, FREQUENCY (Hz)
4KTR S
I C = 1.0 mA
0.5 dB
200
100 A
300 A
)
30 A
10 A
BCW69LT1 BCW70LT1
I n 2 R S 2
500
200 300
BANDWIDTH = 1.0 Hz
1.0 k 2.0 k
BANDWIDTH = 1.0 Hz
1 2
2.0 dB
3.0 dB
1.0 dB
R S
500 700 1.0 k
5.0 dB
5.0 k 10 k
3