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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AD8031ARTZ датащи(PDF) 25 Page - Analog Devices |
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AD8031ARTZ датащи(HTML) 25 Page - Analog Devices |
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25 / 32 page  EVAL-AD7903SDZ User Guide UG-609 Rev. 0 | Page 25 of 32 EVAL-AD7903SDZ LAYOUT Layout Considerations When laying out the printed circuit board (PCB) for the AD7903, follow the recommended guidelines described in this section to obtain the maximum performance from the converter. Figure 33 through Figure 36 show the recommended layout for the AD7903 evaluation board. • Decouple all the power supply pins (VDD1, VDD2, and VIO) and the REF pin with low ESR and low ESL ceramic capacitors, typically 10 µF and 100 nF, placed close to the DUT (U1) and connected using short, wide traces to provide low impedance paths and to reduce the effect of glitches on the power supply lines. • Separate analog and digital sections and keep power supply circuitry away from the AD7903. • Avoid running digital lines under the device and crossover of digital and analog signals because these couple noise into the AD7903. Figure 32. EVAL-AD7903SDZ Evaluation Board Silkscreen—Top Assembly |
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