Analog Devices ADRV9005 Reference Manual page 296

Reference Manual
PRINTED CIRCUIT BOARD LAYOUT RECOMMENDATIONS
Figure 282. ADRV9001 Power-Supply Domains with Connection Guidelines, All Internal LDOs in Use
Power-supply optimization, higher risk (use noise sensitive 1.0 V analog) five power domains:
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1.8 V digital
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1.8 V analog
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1.3 V analog
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1.0 V digital
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1.0 V analog
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This approach uses some of the ADRV9001 internal LDOs to generate 1.0 V for internal blocks. For the remaining blocks, it expects the 1.0 V
to be delivered from an external power source.
For domains shown in Figure 283
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supply pins. Also space the FBs to ensure their electric fields do not influence each other. The FB supplies a trace with a reservoir capacitor
connected to it. That trace is then shielded with ground and provides power to the input power pin.
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Figure 283 outlines the power-supply routing recommendations for this architecture.
that should be powered through a ferrite bead (FB), take care to place the FBs near the ADRV9001
ADRV9001
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