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joshwilson
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Visitor
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Registered: ‎07-01-2020

RFSoC instantaneous bandwidth

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I understand the Gen1 ZCU28 RFSoC has a 4GSPS sampling rate and is capable of sampling in the first and second Nyquist zone. In this case the first Nyquist zone would be 0-2GHz and the second Nyquist zone would be 2-4GHz. I also have seen that the signal has to be in either one or the other Nyquist zone and cannot fall across both. So am i interpreting it correctly that the RFSoC's maximum instantaneous real bandwidth is then 2GHz? I understand that this 2GHz of bandwidth must fall entirely in the first or second Nyquist zone, not both and of course the real IBW with be slightly less than 2GHz to allow for filter rolloff etc. 

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robinli
Xilinx Employee
Xilinx Employee
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Registered: ‎08-20-2018

Yes, if the ADC sample rate is 4GSPS, you configure the ADC  R2R mode without decimation, the IBW is 2GHz (in the real application, IBW should be little less than 2GHz )

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robinli
Xilinx Employee
Xilinx Employee
577 Views
Registered: ‎08-20-2018

Yes, if the ADC sample rate is 4GSPS, you configure the ADC  R2R mode without decimation, the IBW is 2GHz (in the real application, IBW should be little less than 2GHz )

View solution in original post