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Floating input nodes HMC190B

Question asked by menace on Dec 15, 2016
Latest reply on Dec 23, 2016 by s.ilke

Dear support community,

 

I want to use the HMC190BMS8 RF SPDT switch in my design. I have the same circuit as shown as 'Typical Application Circuit' in the datasheet, but I was wondering about the (potentially) floating nodes at the input terminals of the switch (RFC, RF1 & RF2). These have to be decoupled from the rest of the circuitry, so is the switch taking care of its own DC levels? or should I connect the input with a large resistor to ground?

Best regards,
Michel

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