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sampling 800mbps data in virtex 5QV

Started by nilendra 4 years ago9 replieslatest reply 4 years ago73 views

We are trying for a space radar application. For that from ADC need to receive data at around 760MHz.

Is it possible to achieve using rocketio ?

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Reply by adamt99February 28, 2017

I have designed several space fpga including the v5 you need to think about Adc choice what is the output format 760 MHZ fs is 360 MHZ of bandwidth to be processed. Most high speed space devices use multiple outputs to provide a lower data rate output. 

Have you considered radiation. The perfomance of the adc etc 

Adam

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Reply by elliotxuFebruary 28, 2017

You should be able to find I/O speed for both differential and single-ended from datasheet. If your ADC output is differential, 760MHz may be doable. V7 FPGA can support differential DDR data rate up to 1.25+Gbps.

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Reply by adamt99March 1, 2017

The seven series devices are not space qualified at the moment hence the need for v5qv part. 


It is possible i have used v5qv and 3 gsps adc and dac but need careful component selection and design. It will not be cheap either think about $1 million usd per board cost by time you include NRE

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Reply by nilendraMarch 2, 2017

Thanks for replay.

v5qv is fixed. we are going to use this and diffrential I/O, need to finalise ADC.

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Reply by nilendraMarch 2, 2017

Thanks for replay.

we didn't finalise the ADC part no. yet but I/O will be diffrential.

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Reply by rajkeerthy18March 1, 2017

760MHz - Do you mean sample rate ? Some converters (-45 to 85 Degree C) use standardized serial interfaces providing BW from ~300Mbps to 3+ Gbps. RocketIO/MGT is required. Finalize the ADC, that would finalize the interface. Start implementing in FPGA.

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Reply by nilendraMarch 2, 2017

thanks for your suggestion.

yes it is sampling rate. 

our project is in planning phase. we are trying to confirm ADC and related interface. we are going to use differential I/O.

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Reply by adamt99March 1, 2017

You may also be interested in this link


https://forums.xilinx.com/t5/Xcell-Daily-Blog/How-...

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Reply by nilendraMarch 2, 2017

Thanks,

It is good post and quite interesting.