Do you have a typical number for the time it takes for the HMC900 to tune to a filter frequency after an SPI write?
No, we never did that test, unfortunately. It is most likely very slow, I'm guessing in the 10s to 100s of microseconds.
Usually these sorts of parts are used in applications where real time programming of the filters does not take place, so the amount of time to go from one frequency to another isn't too important. What is the application and customer that generated this question? This could be useful info on future generation parts.
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