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ADC32RF80: ADC32RF80

Nick Pol
Prodigy 160 points
Part Number: ADC32RF80
Other Parts Discussed in Thread: TSW40RF80EVM,

Hi

I used TSW40RF80EVM with ADC32RF80 for the digitization of the pulses filled with sinuses 1005 M. Then ADC DDC mixed them with 1000M, decimated by 4 and filtered. TSW40rf80evm is connected to the TSW14J56. The sinuses has the equal initial phases, but the sinuses after  ADC (captured by High Speed Data Converter) has different phases. How can it be explained? And how can I make phases equal? Thanks.

  • 0
    TI__Mastermind 18065 points
    I presume that you are driving both ADC inputs and that each input is phase matches. The programming of the NCO can introduce a phase variation. You can synchronize the NCO with a software sync that will synchronize to the SysRef. The 'J56 card will capture all channels simultaneously so you can observe each channel (post capture) to ensure phase matched.

    --RJH