AD8309 out of band spurs

Out of band spurs from 1800 to 2200 MHz can potentially be seen at the input.  Any issues with  this since the log amp only operates up to a maximum of 500 MHz?

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    •  Analog Employees 
    on Jun 14, 2018 11:23 PM over 2 years ago

    There might be some response due to the spurs, but it will probably be marginal at best.  We never measured @2GHz because it was so far out of band.  If you look at Figures 13 and 16, the slope and intercept are falling off pretty quickly with frequency.  I would measure the response as it would be in your application, i.e. the desired power level of wanted in-band signal with and without the expected power level of out-of-band spurs, and see how much error it causes.