ADRF5021 - Rise Time

lazyhd on May 28, 2019

Hi All,

I am intending to use ADRF5021 in one of our new designs. I have a 30GHz signal that will be fed to the RFC port, two loads will be connected to RF1 and RF2 and a control logic will switch between the loads.

The rise and fall time of my signal are critical for my application. So here are my questions:

The datasheet mentions a typical trise,tfall of 1.0us. What is meant by this rise time since clearly it is not intended for a 30GHz signal ?
No minimum rise/fall time mentioned in the datasheet. Does this mean that the switch can handle the fast rise/fall time of the RF signal (~10ps in my case) without a limitation ?

Thank you for your help,

LazyHD

0 s.ilke

on Aug 5, 2019 4:10 PM
Hi,

For our RF switches, rise and fall times are defined as the change of RF output voltage envelope from 10% to 90% or from 90% to 10% when the RF switch path is toggled between isolation and insertion loss states.

How fast does your application require to switch between RF1 and RF2 path? ~10 ps should be the rise time of sinusoidal RF signal and not the voltage envelope of RF output signal changing from isolation to insertion loss.

BTW, we have a fast switching version of ADRF5021. The part number is ADRf5020.

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