A QUESTION ABOUT THE ad8302

[springf2000]

ad8302

dear all:

i want to use the AD8302 to check the difference between the input and output of the WCDMA power amplifier,but the datasheet tell me the envelope bandwidth is 30MHZ,can i use it to do this job!
because the WCDMA downlink bandwidth is 60MHZ, i want use only one AD8302
to do this job, i donot know how the envelope bandwith of the WCDMA signal!

 

[Mazz]

I think you can use it, as in WCDMA the BW is smaller (I don't remember if 2 or 5 MHz). The 60 MHz is the total BW not the channel BW.
I hope I'm right...
Mazz

 

[vfone]

In WCDMA the BW usually is 3.84MHz (could be larger for different chip rates).
I have used AD8302 for this kind of application and was working fine, using even higher BW.
AD8302 is a very nice chip, ADI pushing to the limit a very simple idea.