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BCW30LT1 Datasheet(PDF) 3 Page - Motorola, Inc |
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BCW30LT1 Datasheet(HTML) 3 Page - Motorola, Inc |
3 / 8 page BCW29LT1 BCW30LT1 3 Motorola Small–Signal Transistors, FETs and Diodes Device Data TYPICAL NOISE CHARACTERISTICS (VCE = –5.0 Vdc, TA = 25°C) Figure 1. Noise Voltage f, FREQUENCY (Hz) 5.0 7.0 10 3.0 Figure 2. Noise Current f, FREQUENCY (Hz) 1.0 10 20 50 100 200 500 1.0 k 2.0 k 5.0 k 10 k 1.0 7.0 5.0 3.0 2.0 1.0 0.7 0.5 0.3 0.1 BANDWIDTH = 1.0 Hz RS ≈ 0 IC = 10 µA 100 µA 30 µA BANDWIDTH = 1.0 Hz RS ≈ ∞ IC = 1.0 mA 300 µA 100 µA 30 µA 10 µA 10 20 50 100 200 500 1.0 k 2.0 k 5.0 k 10 k 2.0 1.0 mA 0.2 300 µA NOISE FIGURE CONTOURS (VCE = –5.0 Vdc, TA = 25°C) 500 k 100 200 500 1.0 k 10 k 5.0 k 20 k 50 k 100 k 200 k 2.0 k 1.0 M 500 k 100 200 500 1.0 k 10 k 5.0 k 20 k 50 k 100 k 200 k 2.0 k 1.0 M Figure 3. Narrow Band, 100 Hz IC, COLLECTOR CURRENT (µA) Figure 4. Narrow Band, 1.0 kHz IC, COLLECTOR CURRENT (µA) 10 0.5 dB BANDWIDTH = 1.0 Hz Figure 5. Wideband IC, COLLECTOR CURRENT (µA) 10 10 Hz to 15.7 kHz Noise Figure is Defined as: NF + 20 log10 en2 ) 4KTRS ) In 2RS2 4KTRS 1 2 = 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) en In K T RS 1.0 dB 2.0 dB 3.0 dB 20 30 50 70 100 200 300 500 700 1.0 k 10 20 30 50 70 100 200 300 500 700 1.0 k 500 k 100 200 500 1.0 k 10 k 5.0 k 20 k 50 k 100 k 200 k 2.0 k 1.0 M 20 30 50 70 100 200 300 500 700 1.0 k BANDWIDTH = 1.0 Hz 5.0 dB 0.5 dB 1.0 dB 2.0 dB 3.0 dB 5.0 dB 0.5 dB 1.0 dB 2.0 dB 3.0 dB 5.0 dB |
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