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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AD8027ART-EBZ датащи(PDF) 25 Page - Analog Devices |
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AD8027ART-EBZ датащи(HTML) 25 Page - Analog Devices |
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25 / 27 page  Data Sheet AD8027/AD8028 APPLICATIONS INFORMATION analog.com Rev. E | 25 of 27 dB pass band of 500 kHz. To start the design, select fO, Q, C1, and R4. Then use the following equations to calculate the remaining variables: Q= fO (MHz) Band Pass (MHz) (8) k = 2πfOC1 (9) C2 = 0.5C1 (10) R1 = 2/k, R2 = 2/(3k), R3 = 4/k (11) H = 1/3(6.5 − 1/Q) (12) R5 = R4/(H − 1) (13) Figure 67. Band-Pass Filter Schematic The test data shown in Figure 68 indicates that this design yields a filter response with a center frequency of fO = 1 MHz, and a bandwidth of 450 kHz. Figure 68. Band-Pass Filter Response DESIGN TOOLS AND TECHNICAL SUPPORT Analog Devices is committed to simplifying the design process by providing technical support and online design tools. Analog Devices offers technical support via evaluation boards, sample ICs, interactive evaluation tools, data sheets, SPICE models, application notes, and phone and email support available at www.analog.com. |
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