I am designing a RF power detection circuit that is capable of detecting frequencies between 2.4GHz to 2.5GHz. I am keen to add a filter on the front end of the AD8362 and the component that I would like to use is the LFB182G by Murata. From their datasheet, it seems like their filter also acts as a balun so I will be using the RF power detector in differential mode. Is this component compatible with the AD8362? If so, do I still need to add DC blocking capacitors on the inputs (INHI, INLO)? Can you suggest a filter that is better suited?
I think regarding the blocking capacitors you are right, they are possible to omit. I see a problem with output impedance matching of the MuRata BPF. This component is suited for TI CC253x, CC254x, CC8520 (acc. datasheet is impedance 69 + j29 Ohm) while RMS detector AD8362 has got input diff. impedance 200Ohm.
Keep in mind that AD8362 has DC coupled inputs (datasheet Fig. 3). Unless you know for certain that your balun has internal DC blocks, the safest solution is to place DC blocking capacitors on your PCB.
And as viktor_vojta points out, the LFB182G filter+balun is designed to match other chip designs which may be somewhat different balanced impedance. You might try to locate a filter+balun that is specified for 200 Ohm balanced load. Alternatively, separate filter and balun components are readily obtainable in SMD package at low cost.
I looked Murata side and I found there are more BPF of LFB182G - important is also sufix. The best matching to your requirements I found 100Ohm balanced output, P/N DEA252450BT-7012D1, DEA252450BT-7022B1 (but I was searching only shortly).
Thanks for your help, much appreciated :)