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FMCOMMS5 noise floor

Question asked by swaxman on Mar 18, 2017
Latest reply on Mar 23, 2017 by swaxman

Hi,

 

I analyzed few A/D captures of the FMCOMMS5 board (attached in frequency and time) and noticed higher than expected (AD9361 spec) noise floor: Noise pk-pk is around 200 (out of 4096 i.e. 12bit) , sampling rate=40MHz = bandwidth.

What is the FMCOMMS added noise figure if any and why am I seeing this?

 

thanks,

-Shai 

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