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HMC632LP5E unused RFOUT/2 (Pin 12): open vs 50 ohm termination and spurious concerns

Category: Datasheet/Specs

There is no explicit instruction for RFOUT/2 (Pin 12) when unused.

When RFOUT/2 is not used, how should RFOUT/2 (Pin 12) be handled, excluding Pin 7 (Vcc Amp)?
Is it recommended to leave Pin 12 open, or is 50-ohm termination allowed?

Additionally, could terminating RFOUT/2 (Pin 12) with 50 ohms potentially contribute to or affect the spurious sidebands observed around the carrier?