I'd like to know how fast HMC232ALP4E can be switched. Does it work normally if 12GHz_ON/OFF switching signal is
applied to its control pin?
The range given in the Frequency column of electrical specs table is for the RF signal applied to RF ports, not for switching signal applied to control ports. The maximum switching frequency is determined by the HMC232ALP4E's switching speed specified in the datasheet (see below for the definitions of Trise/Tfall and Ton/Toff). Therefore, the HMC232ALP4E can be switched at maximum switching frequency of 20 MHz.
Trise/Tfall : 10% to 90% of RF output signal
Ton/Tfall : 50% control to 90% of RF output signal
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