BCW69LT1 datasheet(3/6 Pages) LRC

部件名	BCW69LT1

功能描述	General Purpose Transistors(PNP Silicon)

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制造商	LRC [Leshan Radio Company]

网页	http://www.lrc.cn/

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3 / 6 page

LESHAN RADIO COMPANY, LTD.

M13–3/6

Noise Figure is Defined as:

NF = 20 log

10 ( –––––––––––––––)

1/ 2

e

n = Noise Voltage of the Transistor referred to the input. (Figure 3)

I

n

= Noise Current of the Transistor referred to the input. (Figure 4)

K

= Boltzman’s Constant (1.38 x 10 –23 j/°K)

T

= Temperature of the Source Resistance (°K)

R

s = Source Resistance ( Ω )

e

n

2 + 4KTR

S + I n

2 R

S

2

4KTR

S

BCW69LT1 BCW70LT1

TYPICAL NOISE CHARACTERISTICS

(V

CE = – 5.0 Vdc, T A = 25°C)

f, FREQUENCY (Hz)

Figure 1. Noise Voltage

f, FREQUENCY (Hz)

Figure 2. Noise Current

I

C , COLLECTOR CURRENT (µA)

Figure 3. Narrow Band, 100 Hz

I

C , COLLECTOR CURRENT (µA)

Figure 5. Wideband

I

C , COLLECTOR CURRENT (µA)

Figure 4. Narrow Band, 1.0 kHz

BANDWIDTH = 1.0 Hz

R

S

0

I

C=10 µA

100

µA

30

µA

300

µA

1.0mA

BANDWIDTH = 1.0 Hz

R

S

I

C=1.0mA

300

µA

100

µA

30

µA

BANDWIDTH = 1.0 Hz

NOISE FIGURE CONTOURS

(V

CE = – 5.0 Vdc, T A = 25°C)

10

7.0

5.0

3.0

2.0

1.0

10

20

50

100

200

500

1.0k

2.0k

5.0k

10k

10

20

50

100

200

500

1.0k

2.0k

5.0k

10k

10.0

7.0

5.0

3.0

2.0

1.0

0.7

0.5

0.3

0.2

0.1

1.0M

500k

200k

100k

50k

20k

10k

5.0k

2.0k

1.0k

500

200

100

10

20

30

50

70

100

200

300

500 700 1.0K

10

20

30

50

70

100

200

300

500 700 1.0K

10

20

30

50

70

100

200

300

500 700 1.0K

0.5 dB

1.0 dB

2.0dB

3.0 dB

1.0dB

2.0 dB

3.0 dB

5.0 dB

0.5dB

1.0dB

2.0dB

3.0 dB

5.0 dB

10 Hz to 15.7KHz

10

µA

0.5 dB

1.0M

500k

200k

100k

50k

20k

10k

5.0k

2.0k

1.0k

500

200

100

1.0M

500k

200k

100k

50k

20k

10k

5.0k

2.0k

1.0k

500

200

100

5.0 dB

~

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