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AD8031ARTZ Datasheet(PDF) 25 Page - Analog Devices

No. de pieza AD8031ARTZ
Descripción Electrónicos  EVAL-AD7903SDZ User Guide UG-609
PDF  32 Pages
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Fabricante Electrónico  AD [Analog Devices]
Página de inicio  http://www.analog.com
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AD8031ARTZ Datasheet(HTML) 25 Page - Analog Devices

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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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