RF and Microwave

Q&A ADRF5515 channel to channel isolation

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ADRF5515 channel to channel isolation

Verti on Jan 21, 2021

I fail to attach the pic under the old discussion page after several attempts, so i attach it here.

The orginal question link:

ez.analog.com/.../adrf5515-channel-to-channel-isolation

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salemdar
Jan 21, 2021 +1 verified
Hi,

thanks for posting the layout here. The layout looks ok from here with nice RF practices including vias.

I noticed you use 100pF and 100nF decoupling capacitors for LNA supplies. Please use 1nF and…

+1 salemdar

on Jan 21, 2021 11:21 AM 1 month ago
Hi,

thanks for posting the layout here. The layout looks ok from here with nice RF practices including vias.

I noticed you use 100pF and 100nF decoupling capacitors for LNA supplies. Please use 1nF and 10uF supply caps to LNA. We know that choosing correct supply caps affect the isolation performance. Please also refer to the EVB user guide

ADRF5515-EVALZ User Guide (Rev. 0) (analog.com)

Best regards

Sinan
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