AD9954/PCBZ Analog Devices Inc, AD9954/PCBZ Datasheet - Page 32

• Manufacturer Part Number: AD9954/PCBZ
• Description: BOARD EVAL FOR 9954
• Manufacturer: Analog Devices Inc
• Series: AgileRF™r

Specifications of AD9954/PCBZ

• Main Purpose: Timing, Direct Digital Synthesis (DDS)
• Embedded: No
• Utilized Ic / Part: AD9954
• Primary Attributes: 14-Bit DAC, 32-Bit Tuning Word Width
• Secondary Attributes: 400MHz, Graphical User Interface
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AD9954
LAYOUT CONSIDERATIONS
For the best performance, the following layout guidelines
should be observed. Always separate the analog power supply
(AVDD) and the digital power supply (DVDD), even if just
from two different voltage regulators driven by a common
supply. Likewise, the ground connections (AGND and DGND)
should be kept separate as far back to the source as possible (for
example, separate the ground planes on a localized board, even
if the grounds connect to a common point in the system).
Bypass capacitors should be placed as close to device pins as
possible. Usually a multitiered bypassing scheme consisting of a
small high frequency capacitor (100 pF) placed close to the
supply pin and progressively larger capacitors (0.1 μF and 10 μF)
further back to the actual supply source works best.
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