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LM148E/883 数据表(PDF) 12 Page - National Semiconductor (TI) |
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LM148E/883 数据表(HTML) 12 Page - National Semiconductor (TI) |
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12 / 17 page ![]() Typical Applications—LM148 (Continued) A 1 kHz 4 Pole Butterworth 20120512 Use general equations, and tune each section separately Q1stSECTION = 0.541, Q2ndSECTION = 1.306 The response should have 0 dB peaking A 3 Amplifier Bi-Quad Notch Filter 20120513 Ex: fNOTCH = 3 kHz, Q = 5, R1 = 270k, R2 = R3 = 20k, R4 = 27k, R5 = 20k, R6 = R8 = 10k, R7 = 100k, C1 = C2 = 0.001 µF Better noise performance than the state-space approach. www.national.com 12 |
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