I am looking at a wide dynamic range RF detector (~60dB) to operate in the 0.5 - 2.2GHz range. This is for various signal types up to W-CDMA PAR and bandwidth, with the desire to measure the peak independant of the signal modulation. There seems to be two options, neither of which is quite right and so I would like some help on the best choice. The ADL5502 performs RMS and peak measurements, but with limited dynamic range and I suspect not enough bandwidth while the ADL5519 has the dynamic range and bandwidth but not the peak capabilities. I have an evaluation board for the ADL5519 and am trying to make a descrete peak detector essentially like the 5502 but to operate at lower frequency on the (log) baseband modulation from the ADL5513 video output.
Any help appreciated