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LM124 数据表(PDF) 10 Page - STMicroelectronics |
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LM124 数据表(HTML) 10 Page - STMicroelectronics |
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10 / 16 page ![]() Typical Single - Supply Applications LM124-LM224-LM324 10/16 Figure 20. Activer bandpass filter Figure 21. High input Z, DC differential amplifier Figure 22. Using symmetrical amplifiers to reduce input current (general concept) Fo = 1kHz Q = 50 Av = 100 (40dB) For (CMRR depends on this resistor ratio match) R 1 R 2 ------- R 4 R 3 ------- = e0 (e2 - e1) As shown e0 = (e2 - e1) 1 R 4 R 3 ------- + ⎝⎠ ⎛⎞ |
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