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CS5321 数据表(PDF) 28 Page - Cirrus Logic |
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CS5321 数据表(HTML) 28 Page - Cirrus Logic |
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28 / 38 page ![]() CS5320/21/22 28 DS454PP1 2.18 Board Layout Considerations All of the 0.1 µF filter capacitors on the power sup- plies, AIN+, and AINR, should be placed very close to the chip and connect to the nearest ground pin on the device. The capacitors between VREF+ and VREF- should be located as close to the chip as possible. The 0.l µF capacitors on the AIN+ and AINR pins should be placed with their leads on the same axis, not side-by-side. If these capacitors are placed side-by-side their electric fields can interact and cause increased distortion. The chip should be surrounded with a ground plane. Trace fill should be used around the analog input components. See AN18: Layout and Design Rules for Data Con- verters for further information. |
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