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ADC12D1800: Balun Board for DESIQCLK Mode

Other Parts Discussed in Thread: ADC-LD-BB

Hello,

Could you inform  me about Balun Board for DESIQCLK Mode, please.

I found some boards (really 3, ADC-WB-BB, ADC-LD-BB and TC1-DESIQ-SBB) but without support this mode.

From TC1-DESIQ-SBB description.

"Please note that this board cannot be used to drive the DESCLKIQ Mode. This is because the DESCLKIQ Mode requires I- and Q-channel inputs to be balanced more precisely than can be achieved by two separate boards attached by cables. Using this board to drive the DESCLKIQ Mode is functionally possible, but there will be a large interleaving spur, which cannot be minimized to achieve reasonable SFDR performance."

Could advice mehow design input stage for ADC in DESIQCLK  mode, please?

-- Best Regards, Victor