Because it is not mentioned like in the datasheet of others Hittite components, is it possible to connect N/C pads to gnd on HMC591LP5E ? I guess it is possible but I would like to make sure before launch in fabrication
I just compared the HMC591LP5E data sheet's Functional Diagram to our internal Assembly Diagram (which includes all package-internal and bond wire connections) and verified that all pins shown as "N/C" on the Functional Diagram and Pad Descriptions table (1, 2, 6, 7, 8, 10, 11, 12, 14, 15, 17, 18, 19, 23, 24, 26, 27, 29, 30, and 31) indeed make no connection inside of the package.
It is completely safe both from a reliability standpoint and from an RF/DC performance standpoint to connect any and/or all of the HMC591LP5E's N/C pins to the GND on your PCB.
It is exactly what i was thinking, thank you for your quick and complète answer.
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